# EarthWonders > EarthWonders is the global online marketplace for authentic mineral specimens, crystals, and fossils. Connecting passionate collectors with trusted dealers worldwide. Browse 66,000+ specimens — from rare collectibles to everyday treasures. ## Browse & Search - [Search specimens](https://earthwonders.com/search): Browse all specimens, for sale and in collectors' galleries, with filters for species, locality, price, color, size, and more - [For sale](https://earthwonders.com/market): Specimens currently available for purchase - [Species directory](https://earthwonders.com/species): Browse all mineral and crystal species - [Market Data](https://earthwonders.com/market-data): Sales activity, prices, and market trends by mineral species ## Mineral species - [Fluorite](https://earthwonders.com/species/fluorite): Fluorite, a halide mineral offering color zoning and cubic crystals; notable localities include USA, China, UK, Namibia, and Mexico. - [Quartz](https://earthwonders.com/species/quartz): Quartz: clear to milky crystals with hexagonal prisms, famous from Brazil and USA localities, and striking combinations in geodes and clusters - [Calcite](https://earthwonders.com/species/calcite): Calcite inland crystals: colorless to white to tinted hues, rhombohedral cleavage, notable localities in the USA, Mexico and China. - [Malachite](https://earthwonders.com/species/malachite): Malachite: vibrant green bands, botryoidal to tabular habits, notable specimens from Congo, Namibia, and Mexico offer strong collecting appeal. - [Pyrite](https://earthwonders.com/species/pyrite): Pyrite: metallic gold cubes and pyritohedra, common in oxidized zones, with localities such as USA, Peru, China, Mexico, and Kosovo. - [Barite](https://earthwonders.com/species/barite): Barite: distinctive tabular crystals and stout fulsome habit; popular from Morocco to the USA with strong specimens from UK and China. - [Azurite](https://earthwonders.com/species/azurite): Azurite: deep-blue crystals and masses from USA, Namibia, Mexico, Morocco, China offering striking color and copper carbonate habit. - [Smithsonite](https://earthwonders.com/species/smithsonite): Smithsonite: vibrant color varieties and botryoidal habits from Namibia, USA, Mexico, Australia, Greece offer appealing botryoidal forms and earthy luster - [Tourmaline](https://earthwonders.com/species/tourmaline): Tourmaline: prismatic crystals, rich color variety, notable Brazilian and Afghan localities, and collector appeal for vibrant hues and gem-quality specimens. - [Galena](https://earthwonders.com/species/galena): Galena: metallic gray cubic crystals, lead sulfide with a metallic lustre, notable from the USA and Mexico for octahedral habits and large specimen potential - [Pyromorphite](https://earthwonders.com/species/pyromorphite): Pyromorphite: vibrant green to yellow-green prismatic crystals with resinous lustre from classic Chinese, German and French localities. - [Sphalerite](https://earthwonders.com/species/sphalerite): Sphalerite, ZnS, with resinous to adamantine luster and variable color, from classic localities like the USA, Bulgaria, Mexico, UK, and Peru. - [Cerussite](https://earthwonders.com/species/cerussite): Cerussite: pearly white, diamond-cut crystals with superb brilliance, notable from Namibia and Morocco, prized by collectors for tabular and acicular habits - [Dolomite](https://earthwonders.com/species/dolomite): Dolomite: pink to colorless crystals with rhombohedral habit and glassy lustre from notable localities in USA and Namibia - [Elbaite](https://earthwonders.com/species/elbaite): Elbaite, tourmaline variety with green to pink hues and transparent to crystals from notable localities like Brazil and the USA. - [Copper](https://earthwonders.com/species/copper): Copper: a metallic copper mineral with reddish-brown to bronze color, notable for its metallic luster and malleable habit from diverse localities. - [Baryte](https://earthwonders.com/species/baryte): Baryte: classic tabular crystals, widely found in the USA, UK, and Morocco, notable for white to colorless to pale yellow prisms and chunky aggregates. - [Hematite](https://earthwonders.com/species/hematite): Hematite: metallic luster, steel-gray to black blades and iridescent speculars from notable locales like the UK, Brazil, USA, China, and South Africa - [Wulfenite](https://earthwonders.com/species/wulfenite): Wulfenite: vivid orange to yellow enamel-like crystals, tabular prismatic habit, notable Mexican and American localities with fine thumbnail to large crystals. - [Stilbite](https://earthwonders.com/species/stilbite): Stilbite: orange to colorless crystals, radiating aggregates, notable from India and Afghanistan with fine specimens from USA and UK - [Albite](https://earthwonders.com/species/albite): Albite - white, platy feldspar with vitreous luster from classic localities in Pakistan, Brazil, USA; ideal for cabinet displays and collecting foliated forms. - [Siderite](https://earthwonders.com/species/siderite): Siderite: brown to yellow-brown crystals, often rhombohedral, notable from Portugal, the UK, Germany, the USA, and Romania. - [Rhodochrosite](https://earthwonders.com/species/rhodochrosite): Rhodochrosite: rose-pink to cherry-red crystals with rhombohedral habit from Peru, USA, and South Africa; notable bands and vugs make it collectible. - [Chalcopyrite](https://earthwonders.com/species/chalcopyrite): Chalcopyrite: metallic brassy-yellow to golden, tetrahedral crystals with a iridescent tarnish, notable from Mexico and China, prized for color and crystal form - [Mimetite](https://earthwonders.com/species/mimetite): Mimetite: yellow to orange botryoidal crystals, notable Mexican and Namibian localities, collectible small barite-like habit and lustre. ## Buy & Sell - [How to buy](https://earthwonders.com/help-center/buying/how-to-buy): Guide to purchasing specimens on EarthWonders - [Making and answering offers](https://earthwonders.com/help-center/buying/offers): Offer a price, counter, accept, and check out at the agreed price - [Alerts, bookmarks & following](https://earthwonders.com/help-center/buying/alerts-and-following): Get notified about new specimens that match a search, follow collectors and sellers, bookmark, like, and comment - [Authenticity](https://earthwonders.com/help-center/buying/authenticity): How specimen authenticity is verified - [Getting started selling](https://earthwonders.com/help-center/selling/getting-started): Guide for new sellers - [Buying & selling safely in chat](https://earthwonders.com/help-center/selling/deals-in-chat): Send seller offers, understand who can receive them, and keep payments protected on EarthWonders - [Create an order from multiple listings](https://earthwonders.com/help-center/selling/create-multi-listing-order): Bundle several listings into one order with one shipping charge and one payment link - [Seller payouts](https://earthwonders.com/help-center/selling/payouts): How and when sellers are paid - [Photography tips](https://earthwonders.com/help-center/selling/photography): How to photograph specimens for listings - [Pricing guide](https://earthwonders.com/help-center/selling/pricing): Specimen pricing guidance - [Shipping guide](https://earthwonders.com/help-center/selling/shipping): Shipping and handling ## Collectors & Sellers - [Discover collectors](https://earthwonders.com/collectors): Browse mineral collectors from around the world - [Popular collectors](https://earthwonders.com/collectors/popular): Most followed collectors - [Discover sellers](https://earthwonders.com/sellers): Browse trusted mineral dealers ## Knowledge & Community - [Guides index](https://earthwonders.com/guides): Hundreds of community-edited guides on mineral species and localities - [Blog](https://earthwonders.com/blog): Articles about minerals, collecting, and the community - [Events](https://earthwonders.com/events): Upcoming mineral shows, exhibitions, and community gatherings - [Community guidelines](https://earthwonders.com/help-center/community/guidelines): Community standards and expectations - [Blocking a member](https://earthwonders.com/help-center/community/blocking): How to block or unblock another member, and what blocking changes - [Contributing edits & wiki guides](https://earthwonders.com/help-center/community/contributing): Improve unclaimed specimen records, review duplicate merges, and edit species and locality guides - [Exploring EarthWonders](https://earthwonders.com/help-center/community/exploring): Species pages, market data, the collectors map, events, services, sharing, and the newsletter - [Your account & notifications](https://earthwonders.com/help-center/account/account-and-notifications): Sign in, complete your profile, choose notifications and emails, manage your password and linked accounts, or delete your account - [Collection insights, points & images](https://earthwonders.com/help-center/account/insights-and-points): Audience and collection insights, how points are earned, and your images library - [Adding specimens](https://earthwonders.com/help-center/creating/specimens): How to add a specimen to your collection, for sale, or for the community - [Posts & blog articles](https://earthwonders.com/help-center/creating/posts-and-blog): When to write a post vs a blog article, and how each works - [Submitting events & services](https://earthwonders.com/help-center/creating/events-and-services): How to submit a mineral show or list a professional service, and how review works ## Featured guides - [Tsumeb, Namibia Locality Guide](https://earthwonders.com/guides/tsumeb_namibia_261664): Tsumeb, Namibia — world-renowned locality famed for a rich copper–lead–zinc ore pipe, with dioptase on calcite, azurite blades, and smithsonite prized by colle… - [Minas Gerais, Brazil Locality Guide](https://earthwonders.com/guides/minas-gerais_brazil_165247): Minas Gerais, Brazil — premier mineral locality producing imperial topaz, aquamarine, tourmaline, and historic diamonds; highly prized by collectors. - [Broken Hill, Australia Locality Guide](https://earthwonders.com/guides/broken-hill_australia_34725): A collector's guide to Broken Hill, Australia: its geology, mining history and notable minerals, illustrated with the 727 specimens documented from this locality on EarthWonders. - [Afghanistan Locality Guide](https://earthwonders.com/guides/afghanistan_1): A collector's guide to Afghanistan: its geology, mining history and notable minerals, illustrated with the 752 specimens documented from this locality on EarthWonders. - [Pakistan Locality Guide](https://earthwonders.com/guides/pakistan_131): Pakistan - alpine pegmatites yield icy aquamarine on muscovite, Stak Nala tourmaline, and emeralds from Swat, offering dramatic, collectible mineral specimens. - [Mogok Valley, Myanmar Locality Guide](https://earthwonders.com/guides/mogok-valley_myanmar_571970): Mogok Valley, Myanmar — locality famed for ruby, sapphire, spinel and topaz; metamorphic rocks and strong collector appeal through varied minerals. - [California, USA Locality Guide](https://earthwonders.com/guides/california_usa_39858): A collector's guide to California, USA: its geology, mining history and notable minerals, illustrated with the 266 specimens documented from this locality on EarthWonders. - [Ojuela Mine, Mexico Locality Guide](https://earthwonders.com/guides/ojuela-mine_mexico_186119): Ojuela Mine, Mexico — renowned locality for vivid adamite, legrandite, mimetite, and wulfenite; prized for color, crystal habit, and mining heritage. - [Paprok, Afghanistan Locality Guide](https://earthwonders.com/guides/paprok_afghanistan_192559): Paprok, Afghanistan - a premier gem pegmatite locality known for color-zoned elbaite tourmalines and a wealth of rare minerals, prized by collectors worldwide. - [Skardu District, Pakistan Locality Guide](https://earthwonders.com/guides/skardu-district_pakistan_238458): A collector's guide to Skardu District, Pakistan: its geology, mining history and notable minerals, illustrated with the 593 specimens documented from this locality on EarthWonders. - [Panasqueira Mines, Portugal Locality Guide](https://earthwonders.com/guides/panasqueira-mines_portugal_192203): Panasqueira Mines, Portugal — premier locality yielding tungsten, ferberite, arsenopyrite, fluorapatite, and colorful quartz associations prized by collectors. - [Fluorite](https://earthwonders.com/guides/fluorite): Fluorite - calcium fluoride with a dazzling color range, cubic and octahedral crystals, and UV fluorescence; prized by collectors for Blue John banding. ## Professional Services - [Services directory](https://earthwonders.com/services): Professional mineral photography, authentication, and sourcing services ## About - [About EarthWonders](https://earthwonders.com/about-earthwonders): Our mission and story - [Our story](https://earthwonders.com/blog/why-i-started-earthwonders): How EarthWonders started, from the founder ## Optional - [Full index](https://earthwonders.com/llms-full.txt): This file plus a complete index of every published guide and mineral species - [Care & storage](https://earthwonders.com/help-center/buying/care-storage): How to care for and store mineral specimens - [Ownership & provenance](https://earthwonders.com/help-center/buying/ownership-provenance): Understanding specimen provenance - [Returns](https://earthwonders.com/help-center/buying/returns): Return policy and process - [Newsletter](https://earthwonders.com/newsletter): Subscribe to updates - [Privacy policy](https://earthwonders.com/privacy-policy): Privacy policy - [Terms of use](https://earthwonders.com/terms-of-use): Terms of use - [Seller terms](https://earthwonders.com/seller-terms): Seller terms and conditions - [Return policy](https://earthwonders.com/return-policy): Return policy details ## All guides (2108) - [10th Ore Zone, Intrepid Potash East mine, USA Locality Guide](https://earthwonders.com/guides/10th-ore-zone-intrepid-potash-east-mine_usa_573286): 10th Ore Zone, Intrepid Potash East mine, USA: blue halite in sylvite seams, gemmy, sharply cubic, a collector landmark in the Carlsbad Potash District. - [2nd Sovetskii Mine, Russia Locality Guide](https://earthwonders.com/guides/2nd-sovetskii-mine_russia_314): A collector's guide to 2nd Sovetskii Mine, Russia: its geology, mining history and notable minerals, illustrated with the 155 specimens documented from this locality on EarthWonders. - [79 Mine, USA Locality Guide](https://earthwonders.com/guides/79-mine_usa_426): 79 Mine, Arizona — classic oxidized Pb-Zn-Cu-Ag locality near Hayden, famed for pastel smithsonite, blue hemimorphite, wulfenite, and aurichalcite; highly coll… - [Acanthite](https://earthwonders.com/guides/acanthite): Acanthite, stable low-temperature Ag2S; black masses with cubic crystals argentite pseudomorphs on calcite; prized for form and notable localities. - [Ace of Diamonds Mine, USA Locality Guide](https://earthwonders.com/guides/ace-of-diamonds-mine_usa_1184): Ace of Diamonds Mine, New York - classic Herkimer district locality known for water-clear quartz crystals; accessible pockets and gem-quality specimens. - [Actinolite](https://earthwonders.com/guides/actinolite): Actinolite: rich green, silky byssolite habits, and prismatic forms; formed in greenschists and Alpine clefts; prized for color, luster, and dramatic matrix. - [Adamite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/adamite_from_tsumeb_namibia_261664): Adamite from Tsumeb Mine, Namibia — sharp yellow to yellow-green crystals on smithsonite; prized for large crystal size, complex paragenesis, and provenance. - [Adamite](https://earthwonders.com/guides/adamite): Adamite - zinc arsenate with vivid hues, sharp microcrystals on limonite, and bright UV fluorescence; prized by collectors from Ojuela, Tsumeb, and Lavrion. - [Adamite from Lavrion Mining District, Greece](https://earthwonders.com/guides/adamite_from_lavrion-mining-district_greece_140973): Adamite from Lavrion, Greece – emerald to apple-green botryoids and glassy aggregates on gossan; a complex supergene mineral from a storied Pb-Zn-Ag district w… - [Adamite from Ojuela Mine, Mexico](https://earthwonders.com/guides/adamite_from_ojuela-mine_mexico_186119): Ojuela Mine, Mexico — adamite with yellow-green pinwheel crystals, blue cuprian and purple manganoan varieties, strong UV fluorescence, a top collector locality - [Adelaide Mine, Australia Locality Guide](https://earthwonders.com/guides/adelaide-mine_australia_1655): Adelaide Mine, Australia - Tasmanian crocoite landmark yielding orange-red crystals and dundasite; prized for world-class specimens and history. - [Adun-Cholon Range, Russia Locality Guide](https://earthwonders.com/guides/adun-cholon-range_russia_1899): Adun-Cholon Range, Russia - historic Siberian gem locality producing pale-blue aquamarine, heliodor, and topaz; famed for old-world crystals and provenance. - [Aegirine from Mont Saint-Hilaire, Canada](https://earthwonders.com/guides/aegirine_from_mont-saint-hilaire_canada_169814): Mont Saint-Hilaire, Canada - aegirine crystals range from black to deep green on white analcime, iconic specimens from a diverse alkaline locality. - [Aegirine](https://earthwonders.com/guides/aegirine): Aegirine, a sodium iron pyroxene, shows jet-to-olive prisms, sharp monoclinic crystals, and radiating clusters; prized by collectors for bold color and matrix. - [Afghanistan Locality Guide](https://earthwonders.com/guides/afghanistan_1): A collector's guide to Afghanistan: its geology, mining history and notable minerals, illustrated with the 752 specimens documented from this locality on EarthWonders. - [Agate from Indonesia](https://earthwonders.com/guides/agate_from_indonesia_78): Agate: Indonesia locality highlights banded colors, rarity, top collecting localities, value factors, and care tips to preserve specimens. - [Agate Coyamito](https://earthwonders.com/guides/agate-coyamito): Coyamito Agate - reds, purples, and yellows, complex fortification banding; prized for depth and rarity, with difficult mining driving scarcity and value. - [Agate Laguna](https://earthwonders.com/guides/agate): Laguna Agate — collector’s guide: vivid fortification banding, glow colors, rarity of classic pockets, highlighting Ojo Laguna locality, value, and care tips. - [Aggeneys, South Africa Locality Guide](https://earthwonders.com/guides/aggeneys_south-africa_2203): Aggeneys, South Africa — famed for Broken Hill-type base metals and hollow calcite casts of siderite-sphalerite, offering sculptural, metallic specimens for co… - [Aghbar Mine, Morocco Locality Guide](https://earthwonders.com/guides/aghbar-mine_morocco_2231): A collector's guide to Aghbar Mine, Morocco: its geology, mining history and notable minerals, illustrated with the 83 specimens documented from this locality on EarthWonders. - [Agoudal Centre Mine, Morocco Locality Guide](https://earthwonders.com/guides/agoudal-centre-mine_morocco_2347): A collector's guide to Agoudal Centre Mine, Morocco: its geology, mining history and notable minerals, illustrated with the 22 specimens documented from this locality on EarthWonders. - [Agrigento, Italy Locality Guide](https://earthwonders.com/guides/agrigento_italy_2373): Agrigento, Italy — sulfur locality famed for lemon-yellow to honey-orange crystals on aragonite or calcite; garbere cavities yield historic display pieces. - [Agrigento Province, Italy Locality Guide](https://earthwonders.com/guides/agrigento-province_italy_2374): A collector's guide to Agrigento Province, Italy: its geology, mining history and notable minerals, illustrated with the 137 specimens documented from this locality on EarthWonders. - [Ahmad Abad Mine, Iran Locality Guide](https://earthwonders.com/guides/ahmad-abad-mine_iran_2590): Ahmad Abad Mine, Iran — a notable wulfenite locality with orange tabular crystals on white calcite, prized for striking 3D displays and rare oxide inclusions. - [Ahmednagar District, India Locality Guide](https://earthwonders.com/guides/ahmednagar-district_india_2596): Ahmednagar District, India — zeolite-rich Deccan Traps locality known for apophyllite, stilbite, and Rahuri crystals; prized for distinctive, undamaged example… - [Ahumada Mine, Mexico Locality Guide](https://earthwonders.com/guides/ahumada-mine_mexico_2631): Ahumada Mine, Mexico - classic wulfenite locality in the Los Lamentos district, yielding orange to butterscotch crystals on calcite and prized by collectors. - [Aït Ahmane, Morocco Locality Guide](https://earthwonders.com/guides/at-ahmane_morocco_2942): Aït Ahmane, Morocco — eastern Bou Azzer locality famed for nickel-rich ore, striking gersdorffite octahedra on calcite, and native-silver pockets prized by col… - [Akchatau Mine, Kazakhstan Locality Guide](https://earthwonders.com/guides/akchatau-mine_kazakhstan_3174): Akchatau Mine, Kazakhstan — a rare W-Mo-Be greisen deposit famed for violet fluorite octahedra, creedite, bertrandite, and blue apatite, prized by collectors. - [Alakamisy Itenina, Madagascar Locality Guide](https://earthwonders.com/guides/alakamisy-itenina_madagascar_3471): Alakamisy Itenina, Madagascar — a secondary gem-deposit locality famed for polychromatic tourmaline with backlit, stained-glass-like slices prized by collector… - [Alaska, USA Locality Guide](https://earthwonders.com/guides/alaska_usa_3582): Alaska, USA - a vast mineral province, producing native gold, rare platinum-group minerals, garnets, and copper ores; frontier geology prized by collectors. - [Ala Valley, Italy Locality Guide](https://earthwonders.com/guides/ala-valley_italy_3652): Ala Valley, Italy—an Alpine locality famed for rodingite pockets yielding garnet-diopside-clinochlore, with striking colors and cabinet-quality specimens. - [Alba County, Romania Locality Guide](https://earthwonders.com/guides/alba-county_romania_3668): Alba County, Romania — Roșia Montană gold-silver-telluride locality renowned for native gold on quartz, historic labels, and classic Transylvanian specimens. - [Alberoda, Germany Locality Guide](https://earthwonders.com/guides/alberoda_germany_3780): Alberoda, Germany - premier locality in the Schlema-Alberoda vein, yielding ruby-silver pyrargyrite and proustite, plus rare micromounts and rich collecting ap… - [Albite from Pederneira Mine, Brazil](https://earthwonders.com/guides/albite_from_pederneira-mine_brazil_194601): Albite from Pederneira Mine, Brazil: bladed cleavelandite with tourmaline and quartz; prized for display-quality contrast and the renowned pegmatite locality. - [Albite from Malkhan Pegmatite Field, Russia](https://earthwonders.com/guides/albite_from_malkhan-pegmatite-field_russia_570005): Albite from the Malkhan Pegmatite Field, Russia: pale, bladed cleavelandite with tourmaline matrix; a prized pegmatite mineral from a famed district. - [Albite from Shigar District, Pakistan](https://earthwonders.com/guides/albite_from_shigar-district_pakistan_234600): Albite Shigar District, Pakistan: pale cleavelandite plates with aquamarine and topaz, prized by serious collectors for its high-contrast, frameable beauty. - [Albite](https://earthwonders.com/guides/albite): Albite: sodium plagioclase famed for snow-white cleavelandite blades and Alpine pericline crystals; pegmatite matrices, bright luster, and appeal. - [Albite from Paprok, Afghanistan](https://earthwonders.com/guides/albite_from_paprok_afghanistan_192559): Albite from Paprok, Afghanistan - white to cream cleavelandite blades that highlight tourmaline-rich matrix, prized for locality character and collecting appea… - [Albite from Erongo Mountains, Namibia](https://earthwonders.com/guides/albite_from_erongo-mountains_namibia_78994): Albite from the Erongo Mountains, Namibia — white to colorless feldspar that enhances emerald fluorite and aquamarine; two generations define locality. - [Alchuri, Pakistan Locality Guide](https://earthwonders.com/guides/alchuri_pakistan_4006): A collector's guide to Alchuri, Pakistan: its geology, mining history and notable minerals, illustrated with the 266 specimens documented from this locality on EarthWonders. - [Algeria Locality Guide](https://earthwonders.com/guides/algeria_3): A collector's guide to Algeria: its geology, mining history and notable minerals, illustrated with the 21 specimens documented from this locality on EarthWonders. - [Aliabad, Pakistan Locality Guide](https://earthwonders.com/guides/aliabad_pakistan_4559): A collector's guide to Aliabad, Pakistan: its geology, mining history and notable minerals, illustrated with the 41 specimens documented from this locality on EarthWonders. - [Alice Mine, near Idaho Springs, Clear Creek County, USA Locality Guide](https://earthwonders.com/guides/alice-mine-near-idaho-springs-clear-creek-county_usa_574675): A collector's guide to Alice Mine, near Idaho Springs, Clear Creek County, USA: its geology, mining history and notable minerals, illustrated with the 42 specimens documented from this locality on Ear... - [Áliva Mine, Spain Locality Guide](https://earthwonders.com/guides/liva-mine_spain_4700): Áliva Mine, Spain - canonical Zn-Pb locality in the Picos de Europa, famed for gemmy caramel to honey-red sphalerite and classic carbonate-hosted crystals. - [Allenheads Mine, UK Locality Guide](https://earthwonders.com/guides/allenheads-mine_uk_4909): Allenheads Mine, UK: premier North Pennines locality yielding lavender to wine-purple fluorite cubes, often twinned on dark sphalerite matrix, with notable Dia… - [Almadén Mine, Spain Locality Guide](https://earthwonders.com/guides/almadn-mine_spain_5196): Almadén Mine, Spain - premier mercury locality known for blood-red cinnabar crystals, historic mercury ore deposits, and iconic matrix specimens. - [Almandine](https://earthwonders.com/guides/almandine): Almandine - iron-rich garnet with deep wine-red dodecahedral crystals, metamorphic origins in mica schists, and collectible matrix pieces with star garnets. - [Alston Moor, UK Locality Guide](https://earthwonders.com/guides/alston-moor_uk_5658): Alston Moor, UK - a classic Northern Pennine locality known for fluorite, barytocalcite and alstonite, with diverse ore geology and appealing collector specime… - [Alto da Pitorra, Brazil Locality Guide](https://earthwonders.com/guides/alto-da-pitorra_brazil_5962): Alto da Pitorra, Brazil — renowned for euhedral pink rose quartz crystals from eastern Minas Gerais pegmatites, prized for color, form, and collector rarity. - [Alto Ligonha Pegmatite Field, Mozambique Locality Guide](https://earthwonders.com/guides/alto-ligonha-pegmatite-field_mozambique_6011): A collector's guide to Alto Ligonha Pegmatite Field, Mozambique: its geology, mining history and notable minerals, illustrated with the 77 specimens documented from this locality on EarthWonders. - [Altyn-Tyube area, Kazakhstan Locality Guide](https://earthwonders.com/guides/altyn-tyube-area_kazakhstan_6096): Altyn-Tyube area, Kazakhstan — type locality for dioptase; emerald-green crystals on calcite in a copper-silicate deposit, highly prized by collectors. - [Altyn-Tyube dioptase deposit, Kazakhstan Locality Guide](https://earthwonders.com/guides/altyn-tyube-dioptase-deposit_kazakhstan_6097): Altyn-Tyube, Kazakhstan - dioptase type locality with emerald-green crystals on calcite in Devonian carbonates; prized for dramatic vugs and its historic colle… - [Amatitlán, Mexico Locality Guide](https://earthwonders.com/guides/amatitln_mexico_6435): Amatitlán, Mexico — Guerrero amethyst with stout, tapered quartz crystals, vivid wine-purple cores, phantoms, and clusters prized by collectors. - [Amazonite](https://earthwonders.com/guides/amazonite): Amazonite - vivid blue-green microcline with checkerboard twinning and color; prized in smoky quartz and albite matrices, with Colorado and Urals localities. - [Amazonite from Crystal Peak, Colorado, USA](https://earthwonders.com/guides/amazonite_from_crystal-peak_usa_61521): Crystal Peak amazonite, Colorado — renowned for large, well-formed blue-green crystals with smoky quartz, prized for color, luster, and collecting pedigree. - [Amazonite from Smoky Hawk Claim, Colorado, USA](https://earthwonders.com/guides/amazonite_from_smoky-hawk-claim_usa_239789): Smoky Hawk Claim amazonite — saturated blue-green microcline crystals with smoky quartz in pegmatite pockets; a prized Colorado locality for striking specimens. - [Amborompotsy, Madagascar Locality Guide](https://earthwonders.com/guides/amborompotsy_madagascar_6796): Amborompotsy, Madagascar — quartz with trapped violet-to-blue fluorite octahedrons, crystal-in-crystal specimens prized by collectors for color and rarity. - [Ameib Farm 60, Namibia Locality Guide](https://earthwonders.com/guides/ameib-farm-60_namibia_6864): Ameib Farm 60, Namibia - Erongo’s classic jeremejevite locality, yielding slender blue to violet crystals in near-surface cavities, prized for rarity and form. - [Amelia Mine, Mexico Locality Guide](https://earthwonders.com/guides/amelia-mine_mexico_6875): Amelia Mine, Mexico - type locality for boleite, pseudoboleite, and cumengeite; blue cubes and sculptural pyramids make it a must for collectors. - [Amethyst from Guerrero](https://earthwonders.com/guides/amethyst-from_guerrero_mexico_102495): Guerrero amethyst — deep purple crystals with two-tone color, prized for intensity, large sizes, and scarce, historic provenance; distinguish from Veracruz. - [Amethyst from Jacksons Crossroads](https://earthwonders.com/guides/azurite-from_jacksons-crossroads_usa_120342): Amethyst, JXR locality, North America — renowned for blue-flash zoning and pristine, glassy crystals; limited output boosts rarity and collecting value. - [Amethyst from Jacksons Crossroads, USA](https://earthwonders.com/guides/amethyst_from_jacksons-crossroads_usa_120342): Jacksons Crossroads, Georgia — a famous amethyst locality known for violet quartz crystals in pockets and provenance-driven collecting significance. - [Amethyst from Veracruz, Mexico](https://earthwonders.com/guides/amethyst_from_veracruz_mexico_282074): Veracruz amethyst is one of the few amethysts that serious collectors can often recognize at arm’s length. Its appeal is not based on the massive, dark geode architecture of Brazil or Uruguay, nor on... - [Amethyst](https://earthwonders.com/guides/amethyst): Amethyst - violet quartz prized for vivid color and crystal forms; affordable Brazilian geodes and razor-sharp Georgia crystals, with collecting localities. - [Amethyst from Goboboseb Mountains, Namibia](https://earthwonders.com/guides/amethyst_from_goboboseb-mountains_namibia_94627): Goboboseb amethyst is the collector’s “Brandberg” amethyst in its most important market sense: glassy quartz from the basalt country west of the Brandberg massif, showing purple amethyst, smoky quartz... - [Amethyst from Guerrero, Mexico](https://earthwonders.com/guides/amethyst_from_guerrero_mexico_102495): Amethyst from Guerrero, Mexico - stout, glassy crystals with wine-purple cores and pale outer zones; notable for inner color phantom and sculptural habit. - [Amethyst from Goboboseb Mountains](https://earthwonders.com/guides/amethyst-from_goboboseb-mountains_namibia_94627): Brandberg amethyst — jewel-like luster, translucent depth, and remote-pocket crystals with sub-varieties (scepters, enhydro, Harlequin) prized by collectors. - [Amethyst from Veracruz](https://earthwonders.com/guides/amethyst-from_veracruz_mexico_282074): Veracruz amethyst from Las Vigas, Mexico; delicate light lavender crystals form in clusters on volcanic rock, prized by collectors for brilliance and locale. - [Ametista do Sul, Brazil Locality Guide](https://earthwonders.com/guides/ametista-do-sul_brazil_7218): Ametista do Sul, Brazil — a premier basalt-geode locality yielding amethyst geodes with pale chalcedony rims; valued for scale, color, and collector appeal. - [Amo Sn deposit, China Locality Guide](https://earthwonders.com/guides/amo-sn-deposit_china_7389): Amo Sn deposit, China — renowned for transparent, twinned cassiterite on quartz, with striking zoning, and the rare ximengite BiPO4 from this tin district. - [Anahi Mine, Bolivia Locality Guide](https://earthwonders.com/guides/anahi-mine_bolivia_7646): Anahi Mine, Bolivia — a renowned locality for ametrine quartz, with sector-zoned violet-to-citrine colors and cabinet-quality crystals, prized by collectors. - [Analcime](https://earthwonders.com/guides/analcime): Analcime: trapezohedral crystals in basalt cavities and alkaline rocks; colorless to white, sometimes pink, prized for crisp geometry and broad localities. - [Analcime from Mont Saint-Hilaire, Canada](https://earthwonders.com/guides/analcime_from_mont-saint-hilaire_canada_169814): Mont Saint-Hilaire analcime; sharp white trapezohedra with lustrous crystals in a famed alkaline quarry, a top collecting locality known for associations. - [Anarak District, Iran Locality Guide](https://earthwonders.com/guides/anarak-district_iran_7705): A collector's guide to Anarak District, Iran: its geology, mining history and notable minerals, illustrated with the 35 specimens documented from this locality on EarthWonders. - [Anatase](https://earthwonders.com/guides/anatase): Anatase — sharp, adamantine crystals; tetragonal TiO2 in honey-gold to root-beer hues on chlorite-dusted quartz; alpine localities fuel its rarity on display. - [Andilamena Quartz Quarries, Madagascar Locality Guide](https://earthwonders.com/guides/andilamena-quartz-quarries_madagascar_8073): Andilamena Quartz Quarries, Madagascar, is famous for Japanese-law quartz twins and sceptered amethyst from hydrothermal breccia, prized by collectors. - [Andorite](https://earthwonders.com/guides/andorite): Andorite — rare sulfosalt with steel-gray to black crystals, high luster, and feathered groupings; prized in classic Bolivian and Peruvian localities. - [Andorite from San José Mine, Bolivia](https://earthwonders.com/guides/andorite_from_san-jose-mine_bolivia_226160): Andorite — San José Mine, Bolivia: steel-gray, highly metallic tabular crystals with strong striation, prized for display-worthy form and locality. - [Andradite](https://earthwonders.com/guides/andradite): Andradite — vivid demantoid greens, topazolite yellows, and melanite blacks; sharp, fire-filled crystals with skarn associations and strong collecting value. - [Andradite from Huanggang Mine, Inner Mongolia, China](https://earthwonders.com/guides/andradite_from_huanggang-mine_china_114410): Andradite from Huanggang Mine, Inner Mongolia — olive to near-black dodecahedra with metallic luster, chemically zoned grandites, and skarn provenance. - [Anglesite](https://earthwonders.com/guides/anglesite): Anglesite: brilliant gemmy PbSO4 crystals with adamantine luster in colors from clear to lemon yellow; prized on matrix from Tsumeb, Monteponi, Broken Hill. - [Anglesite from Broken Hill, New South Wales, Australia](https://earthwonders.com/guides/anglesite_from_broken-hill_australia_34725): Anglesite from Broken Hill, NSW, Australia - blocky, lustrous white to ivory crystals in gossan pockets; iconic Broken Hill lead-sulphate prized by collectors. - [Anglesite from Tsumeb, Namibia](https://earthwonders.com/guides/anglesite_from_tsumeb_namibia_261664): Anglesite from Tsumeb, Namibia: a classic lead sulfate with sharp orthorhombic crystals, adamantine luster, high translucency, prized by collectors. - [Anglésite from Touissit, Morocco](https://earthwonders.com/guides/anglesite_from_touissit_morocco_259220): Anglesite from Touissit, Morocco: vivid yellow, glassy crystals on galena; a classic locality piece prized for its color, luster, and cabinet appeal. - [Anhui, China Locality Guide](https://earthwonders.com/guides/anhui_china_8565): A collector's guide to Anhui, China: its geology, mining history and notable minerals, illustrated with the 100 specimens documented from this locality on EarthWonders. - [Anhydrite from Naica Mine, Mexico](https://earthwonders.com/guides/anhydrite_from_naica-mine_mexico_175534): Anhydrite from Naica Mine, Mexico — pale blue prismatic blades in sprays with silky striations; a classic display mineral that boosted collector appeal. - [Anhydrite](https://earthwonders.com/guides/anhydrite): Anhydrite: water-free CaSO4 crystals with orthorhombic cleavage, blue to lilac hues; prized for sharp forms, angelite color, and rare, unaltered specimens. - [Anjanabonoina pegmatites, Madagascar Locality Guide](https://earthwonders.com/guides/anjanabonoina-pegmatites_madagascar_8648): Anjanabonoina, Madagascar — famed for large, colorful calcium-rich tourmalines (liddicoatite/fluor-liddicoatite) and a diverse suite prized by collectors. - [Anjanabononoia, Madagascar Locality Guide](https://earthwonders.com/guides/anjanabononoia_madagascar_8649): Anjanabononoia, Madagascar — central tourmaline locality famed for giant color-zoned tourmaline crystals; also yields quartz and amazonite—highly prized by col… - [Annabel Lee Mine, USA Locality Guide](https://earthwonders.com/guides/annabel-lee-mine_usa_8791): Annabel Lee Mine, Illinois — late-period fluorite locality famed for sharp color-zoned fluorite cubes, rare celestine, and historic collector appeal. - [Anosy, Madagascar Locality Guide](https://earthwonders.com/guides/anosy_madagascar_9107): Anosy, Madagascar — premier collector locality with sapphirine, grandidierite, hibonite and sapphire; renowned for dark blue crystals and bluish-green hues. - [Antetezambaro, Madagascar Locality Guide](https://earthwonders.com/guides/antetezambaro_madagascar_9325): Antetezambaro, Madagascar: premier garnet locality yielding gemmy demantoid andradite and topazolite in lustrous crystals on pale skarn, famed for color zoning. - [Antetezambato Demantoid-Topazolite Mine, Madagascar Locality Guide](https://earthwonders.com/guides/antetezambato-demantoid-topazolite-mine_madagascar_9326): Antetezambato, Madagascar — premier skarn locality yielding demantoid garnets and topazolite; mint-green to amber hues and sculptural crystals prized by collec… - [Antsahanana quarry, null Locality Guide](https://earthwonders.com/guides/antsahanana-quarry_null_573279): Antsahanana quarry, Madagascar — rare-element pegmatite locality yielding unusually large lemon-yellow londonite–rhodizite crystals on albite; prized by collec… - [Antsirabe, Madagascar Locality Guide](https://earthwonders.com/guides/antsirabe_madagascar_9577): Antsirabe, Madagascar locality - pegmatite belt producing vividly zoned tourmalines (liddicoatite) and rare minerals; a historic source prized by collectors. - [Antsongombato gem mine, Antsentsindrano, null Locality Guide](https://earthwonders.com/guides/antsongombato-gem-mine-antsentsindrano_null_573358): Antsongombato gem mine, Antsentsindrano - a premier Malagasy pegmatite locality known for yellow londonite–rhodizite crystals, red tourmaline, and rare borates. - [Aosta Valley, Italy Locality Guide](https://earthwonders.com/guides/aosta-valley_italy_9705): A collector's guide to Aosta Valley, Italy: its geology, mining history and notable minerals, illustrated with the 59 specimens documented from this locality on EarthWonders. - [Aouint Ighoman, Morocco Locality Guide](https://earthwonders.com/guides/aouint-ighoman_morocco_9712): Aouint Ighoman, Morocco - locality yielding bright native gold in elongated spinel-law twins, wand-like crystals, and provenance-driven collector appeal. - [Aouli, Morocco Locality Guide](https://earthwonders.com/guides/aouli_morocco_9715): Aouli, Morocco - Classic locality for fluorite; distinctive yellow honey fluorite cubes on white quartz or barite, with galena and azurite, prized by collector… - [Apache Agate](https://earthwonders.com/guides/apache-agate): Apache Agate, striking red, orange, and yellow color splashes with draped veils on lime-green exteriors; prized nodules and rare banding attract collectors. - [Apache Mine, USA Locality Guide](https://earthwonders.com/guides/apache-mine_usa_9758): Apache Mine, USA - a Globe Hills locality known for abundant red vanadinite crystals on quartzite, with rarer lead-vanadium minerals prized by collectors. - [Apatite from Panasqueira Mines, Portugal](https://earthwonders.com/guides/apatite_from_panasqueira-mines_portugal_192203): Apatite from the Panasqueira Mines is one of the signature mineral classics of Europe: glassy, hexagonal fluorapatite, most often in green, blue-green, colorless, pale yellow, violet, or purple crysta... - [Apatite from Sapo Mine, Brazil](https://earthwonders.com/guides/apatite_from_sapo-mine_brazil_228499): Apatite from Sapo Mine, Brazil: green to color-zoned crystals with hydroxylapatite and fluorapatite varieties; a pegmatite marquee prized for form and color. - [Apatite](https://earthwonders.com/guides/apatite): Apatite - hexagonal crystals with vivid greens, blues, and violets; forms range from pegmatites to alpine pockets, valued for color, form, and affordability. - [Apex mine, Mexico Locality Guide](https://earthwonders.com/guides/apex-mine_mexico_9876): Apex Mine, Mexico — Chihuahua locality famed for caramel to honey-brown vanadinite and rare wulfenite in an oxidized skarn system, prized by collectors. - [Apophyllite from Jalgaon District, India](https://earthwonders.com/guides/apophyllite_from_jalgaon-district_india_120652): Jalgaon District is one of the great modern names in apophyllite collecting: a Deccan Trap basalt locality where glassy, geometric fluorapophyllite-(K) crystals emerge from dark volcanic rock with the... - [Apophyllite from Nashik District, India](https://earthwonders.com/guides/apophyllite_from_nashik-district_india_176406): Apophyllite from Nashik, India - glassy, square crystals in pale green to colorless hues; basalt cavity mineral with pristine terminations and striking form. - [Apophyllite](https://earthwonders.com/guides/apophyllite): Apophyllite — glassy, fish-tail crystals; colorless to green. Great for display and provenance. Key sources: Deccan Traps (India), New Jersey; collecting value. - [Aquamarine from Shigar District, Pakistan](https://earthwonders.com/guides/aquamarine_from_shigar-district_pakistan_234600): Aquamarine from Shigar District, Pakistan - blue beryl from Himalayan pegmatites, with tall, architectural prisms among albite and mica, prized by collectors. - [Aquamarine](https://earthwonders.com/guides/aquamarine): Aquamarine - sea-blue to blue-green beryl; forms in pegmatites and alpine veins; prized for color, clarity, and dramatic matrix specimens. - [Aquamarine from Erongo Mountains, Namibia](https://earthwonders.com/guides/aquamarine_from_erongo-mountains_namibia_78994): Aquamarine from Erongo Mountains, Namibia - blue beryl in crisp prisms atop black schorl, forming miarolitic pegmatite pockets; a collector's locality. - [Aquamarine from Mt Antero, Colorado, USA](https://earthwonders.com/guides/aquamarine_from_mt-antero_usa_173263): Mt Antero, Colorado, classic alpine aquamarine locale with glassy blue beryl, rare Be-mineral associates, and historic pocket specimens prized by collectors. - [Aquamarine from Chumar Bakhoor, Nagar District, Pakistan](https://earthwonders.com/guides/aquamarine_from_chumar-bakhoor_pakistan_50993): Chumar Bakhoor aquamarine is one of the defining specimen styles of the Pakistani Himalaya: pale to medium ice-blue beryl standing upright from glittering beds of bladed muscovite, sometimes accompani... - [Aragonite](https://earthwonders.com/guides/aragonite): Aragonite - dramatic flos-ferri growths and pastel sprays; prized for sculptural forms, rarity of pristine pieces, and historic European localities. - [Aragonite from Lavrion Mining District, Greece](https://earthwonders.com/guides/aragonite_from_lavrion-mining-district_greece_140973): Aragonite from Lavrion, Greece — pale blue to seafoam crusts, delicate stalactites, and copper-bearing associations, highlighting its distinctive locality. - [Aragonite from Minglanilla, Spain](https://earthwonders.com/guides/aragonite_from_minglanilla_spain_568769): Aragonite from Minglanilla, Spain: robust cyclic twin prisms in smoky beige to purple, architectural pina clusters, prized by museums and serious collectors. - [Aragonite from Styrian Erzberg, Austria](https://earthwonders.com/guides/aragonite_from_styrian-erzberg_austria_248452): Styrian Erzberg aragonite, Austria — the iconic iron-flower flos ferri with coral-like, delicate white blooms; a famed European locality prized by collectors. - [Arandis, Namibia Locality Guide](https://earthwonders.com/guides/arandis_namibia_10243): Arandis, Namibia — desert locality known for boltwoodite orange sprays on calcite and blue jeremejevite prisms, prized for rarity and collecting appeal. - [Aranzazú Mine, Mexico Locality Guide](https://earthwonders.com/guides/aranzaz-mine_mexico_10262): Aranzazú Mine, Mexico — copper-skarn locality in Zacatecas, yielding tennantite, azurite, malachite, and copper-sulfide crystals prized by collectors. - [Argentière Glacier, France Locality Guide](https://earthwonders.com/guides/argentire-glacier_france_10792): Argentière Glacier: Alpine locality in the Mont-Blanc massif known for smoky quartz and morion with pink fluorite octahedra; prized by collectors for its strik… - [Argentina Locality Guide](https://earthwonders.com/guides/argentina_7): A collector's guide to Argentina: its geology, mining history and notable minerals, illustrated with the 36 specimens documented from this locality on EarthWonders. - [Argyle mine, Lake Argyle area, Kimberley, Australia Locality Guide](https://earthwonders.com/guides/argyle-mine-lake-argyle-area-kimberley_australia_573332): Argyle mine, Lake Argyle area, Kimberley, Australia - famed for its pink diamonds and etched roughs; a collector favorite for rarity and color. - [Aricanga mine, Brazil Locality Guide](https://earthwonders.com/guides/aricanga-mine_brazil_10949): A collector's guide to Aricanga mine, Brazil: its geology, mining history and notable minerals, illustrated with the 97 specimens documented from this locality on EarthWonders. - [Arizona, USA Locality Guide](https://earthwonders.com/guides/arizona_usa_11014): Arizona, USA - copper-rich locality famed for Bisbee azurite and malachite, wulfenite, vanadinite, and rare sulfates; key oxidation zones from Bisbee to Ajo. - [Arkansas, USA Locality Guide](https://earthwonders.com/guides/arkansas_usa_11110): Arkansas — a mineral province with glassy Ouachita quartz, wavellite and phosphates, and Magnet Cove minerals; classic sources include Avant and Mauldin Mounta… - [Arsenopyrite](https://earthwonders.com/guides/arsenopyrite): Arsenopyrite - steel-gray, mirror-bright prismatic crystals; prized for sculptural form and heft, with top localities (Panasqueira, Dalnegorsk, Yaogangxian) in… - [Arsenopyrite from Trepča Stari Trg Mine, Kosovo](https://earthwonders.com/guides/arsenopyrite_from_trepca-stari-trg-mine_kosovo_260391): Trepča Stari Trg, Kosovo — arsenopyrite from a classic European sulfide locality, steelwhite crystals in quartz/calcite assemblages, famed for display quality. - [Arsenopyrite from Yaogangxian Mine, China](https://earthwonders.com/guides/arsenopyrite_from_yaogangxian-mine_china_296590): Yaogangxian arsenopyrite is one of the great modern examples of a species that collectors once tended to treat as an accessory. At this Hunan tungsten-tin mine, arsenopyrite can be the star: steel-gra... - [Arsenopyrite from Panasqueira Mines, Portugal](https://earthwonders.com/guides/arsenopyrite_from_panasqueira-mines_portugal_192203): Arsenopyrite from Panasqueira, Portugal - architectural, lustrous crystals in open cavities with quartz and mica, a premier European locality for collectors. - [Artigas, Uruguay Locality Guide](https://earthwonders.com/guides/artigas_uruguay_11867): Artigas, Uruguay — renowned amethyst–agate geodes from Los Catalanes; vivid amethyst over agate, glassy quartz, cathedral interiors for serious collectors. - [Artonvilla Mine, South Africa Locality Guide](https://earthwonders.com/guides/artonvilla-mine_south-africa_11883): Artonvilla Mine, South Africa — blue quartz inclusions (ajoite, papagoite, shattuckite), striking pocket specimens, revived digs, and provenance notes. - [Ashaway, USA Locality Guide](https://earthwonders.com/guides/ashaway_usa_565348): Ashaway, Rhode Island - rare locality for milky quartz capped by gemmy amethyst scepters from a hidden vein; prized for color contrast and growth history. - [Atacama, Chile Locality Guide](https://earthwonders.com/guides/atacama_chile_12714): Atacama, Chile — a mineral province famed for atacamite and rare szenicsite, rich copper–silver deposits, and desert-born crystals prized by collectors. - [Atacamite](https://earthwonders.com/guides/atacamite): Atacamite: vivid green copper hydroxychloride with glassy luster and sharp prism crystals; forms in oxidized copper deposits and is prized for color and rarity. - [Atacocha Mine, Peru Locality Guide](https://earthwonders.com/guides/atacocha-mine_peru_12717): Atacocha Mine, Peru — Andean locality famed for display-quality green fluorite on pyrite, with galena and sphalerite, and Cerro de Pasco sulfide associations. - [Audrey Lynne Mine, USA Locality Guide](https://earthwonders.com/guides/audrey-lynne-mine_usa_13258): A collector's guide to Audrey Lynne Mine, USA: its geology, mining history and notable minerals, illustrated with the 20 specimens documented from this locality on EarthWonders. - [Augelite](https://earthwonders.com/guides/augelite): Augelite - rare aluminum phosphate with wedge-shaped crystals and bright luster; colorless to green, prized from Portugal, Peru, and Canada for micromounts. - [Aurangabad District, India Locality Guide](https://earthwonders.com/guides/aurangabad-district_india_13483): A collector's guide to Aurangabad District, India: its geology, mining history and notable minerals, illustrated with the 60 specimens documented from this locality on EarthWonders. - [Aurangabad Division, India Locality Guide](https://earthwonders.com/guides/aurangabad-division_india_13485): A collector's guide to Aurangabad Division, India: its geology, mining history and notable minerals, illustrated with the 287 specimens documented from this locality on EarthWonders. - [Aurichalcite](https://earthwonders.com/guides/aurichalcite): Aurichalcite: blue to blue-green acicular sprays with silky luster; fragile, prized by collectors; notable localities include Ojuela, Kelly, Tsumeb. - [Aurichalcite from Ojuela Mine, Mapimí, Mexico](https://earthwonders.com/guides/aurichalcite_from_ojuela-mine_mexico_186119): Aurichalcite, from Ojuela Mine, Mapimí, Mexico — vivid blue-green acicular tufts on rusty gossan; prized for color, texture, and iconic locality specimens. - [Aurichalcite from Tsumeb, Namibia](https://earthwonders.com/guides/aurichalcite_from_tsumeb_namibia_261664): Aurichalcite from Tsumeb, Namibia — pale blue-green acicular crystals and feathery sprays in an oxidized zinc-copper system; prized for freshness and texture. - [Aurichalcite from Kelly Mine, Magdalena, New Mexico, USA](https://earthwonders.com/guides/aurichalcite_from_kelly-mine_usa_127969): Aurichalcite from Kelly Mine, Magdalena, New Mexico — blue-green botryoidal crusts, notable for the locality’s zinc-lead history and prized by serious collecto… - [Aurichalcite from Lavrion Mining District, Greece](https://earthwonders.com/guides/aurichalcite_from_lavrion-mining-district_greece_140973): Aurichalcite, Lavrion, Greece: pale blue-to-blue-green fibrous sprays; valued for association pieces, district context, and collector appeal. - [Aurora Mine, Mexico Locality Guide](https://earthwonders.com/guides/aurora-mine_mexico_13550): Aurora Mine, Mexico — a prized locality for orange wulfenite and vanadinite from oxidized Pb-Zn-V zones, prized for distinctive habit and collecting appeal. - [Aurora mine, USA Locality Guide](https://earthwonders.com/guides/aurora-mine_usa_13542): Aurora mine, Chihuahua, Mexico — renowned oxidized lead-vanadium-molybdenum locality famed for cabinet-sized wulfenite and vanadinite, cherished by collectors. - [Austin, USA Locality Guide](https://earthwonders.com/guides/austin_usa_13650): Austin, USA — iconic celestine from the Glen Rose Formation near Mount Bonnell; blue-tipped, glassy prisms in limestone, a regional collector favorite. - [Australia Locality Guide](https://earthwonders.com/guides/australia_9): Australia: a continent-scale locality guide highlighting diverse mineral provinces, iconic specimens (crocoite, opal, sapphires), and top collecting hotspots. - [Austria Duvas mine, Peru Locality Guide](https://earthwonders.com/guides/austria-duvas-mine_peru_13724): Austria Duvas mine, Peru, Morococha locality yielding pink rhodochrosite on quartz in botryoidal to rosette-like forms; prized for rarity and collector appeal. - [Avant Mine, USA Locality Guide](https://earthwonders.com/guides/avant-mine_usa_573246): Avant Mine, USA — Ouachita locality known for glassy quartz crystals and bright wavellite; notable for color zoning, spherules, and strong collecting appeal. - [Avessalos, Serifos, Greece Locality Guide](https://earthwonders.com/guides/avessalos-serifos_greece_573114): Avessalos, Serifos, Greece — a defining Fe-skarn locality noted for prase-dominant green quartz, bi-colored prase–amethyst crystals, and iron-rose hematite ros… - [Axinite from Puiva Mount, Russia](https://earthwonders.com/guides/axinite_from_puiva-mount_russia_205255): Puiva Mount, Russia — world-class axinite-(Fe) from alpine-cleft deposits; large, razor-edged blades with glassy luster, and dramatic alpine-pocket crystals pr… - [Axinite](https://earthwonders.com/guides/axinite): Axinite: wedge-shaped, razor-edged crystals with glassy luster and strong pleochroism; varieties axinite-(Fe/Mn/Mg) and tinzenite from alpine clefts and skarns - [Axinite from Obira Mine, Japan](https://earthwonders.com/guides/axinite_from_obira-mine_japan_185175): Axinite from Obira Mine, Japan: famed skarn locality with sharp brown to clove-brown axinite crystals, sculptural forms, and strong collector appeal. - [Axinite from Dalnegorsk, Russia](https://earthwonders.com/guides/axinite_from_dalnegorsk_russia_63378): Axinite — Dalnegorsk, Russia: dark brown, glassy blades in tight fan/feather aggregates from a boron-rich skarn; rare, locality-specific with labeling cautions. - [Azul Bien Grande Pocket, Pederneira Mine, São José da Safira, Brazil Locality Guide](https://earthwonders.com/guides/azul-bien-grande-pocket-pederneira-mine-so-jos-da-safira_brazil_573368): A collector's guide to Azul Bien Grande Pocket, Pederneira Mine, São José da Safira, Brazil: its geology, mining history and notable minerals, illustrated with the 34 specimens documented from this lo... - [Azurite from Tsumeb, Namibia](https://earthwonders.com/guides/azurite_from_tsumeb_namibia_261664): Azurite from Tsumeb, Namibia — renowned for large sharp blue crystals, vivid color, and classic associations with malachite; a historic, collectible locality. - [Azurite](https://earthwonders.com/guides/azurite): Azurite - deep blue copper carbonate with prismatic and botryoidal forms; alters to malachite; Mohs 3.5–4; identify color, habit, and notable localities. - [Azurite from Tsumeb](https://earthwonders.com/guides/azurite-from_tsumeb_namibia_261664): Azurite from Tsumeb, Namibia, features saturated royal-blue crystals with mirror luster on dolomite or smithsonite; prized for color, form, and collector care. - [Babingtonite from Prospect Park Quarry, New Jersey, USA](https://earthwonders.com/guides/babingtonite_from_prospect-park-quarry_usa_204689): Prospect Park Quarry babingtonite is one of the most recognizable departures from the usual appearance of the species. Instead of the familiar jet-black, sharply lustrous babingtonite on pale prehnite... - [Babingtonite from Zhaotong, Yunnan, China](https://earthwonders.com/guides/babingtonite_from_zhaotong_china_299088): Babingtonite from Zhaotong is best understood as the Qiaojia County material: sharp, black, iron-rich silicate crystals set dramatically on pale green prehnite and, in many specimens, sparkling quartz... - [Babingtonite](https://earthwonders.com/guides/babingtonite): Babingtonite - jet-black to bottle-green crystals in basalt pockets; crisp luster on light matrices, rare and collectible from New Jersey and Yunnan. - [Babingtonite from Lane & Son Traprock Quarries, Westfield, Massachusetts, USA](https://earthwonders.com/guides/babingtonite_from_lane-son-traprock-quarries_usa_138347): Babingtonite from Westfield, Massachusetts - defining American locality with jet-black euhedral crystals on traprock, strong contrast, and historic quarrying. - [Badakhshan, Afghanistan Locality Guide](https://earthwonders.com/guides/badakhshan_afghanistan_14867): Badakhshan, Afghanistan — Sar-e-Sang lazurite district famed for royal-blue lapis crystals in white marble, Afghanite, and scapolite; a historic, premier local… - [Bad Ems, Germany Locality Guide](https://earthwonders.com/guides/bad-ems_germany_14911): Bad Ems, Germany: historic Lahn Valley locality famed for pyromorphite crystals and varied lead-zinc minerals, prized for provenance, density, and habit. - [Bad Schlema, Germany Locality Guide](https://earthwonders.com/guides/bad-schlema_germany_15111): Bad Schlema, Germany - famed uranium and silver vein district in the Erzgebirge, prized for ruby-silver proustite and pyrargyrite crystals on calcite. - [Bafoulabé Cercle, Mali Locality Guide](https://earthwonders.com/guides/bafoulab-cercle_mali_15187): Bafoulabé Cercle, Mali locality guide highlighting sculptural prehnite-epidote specimens and Mali garnet gems; rare apple-green prehnite balls on epidote. - [Bagdad Mine, USA Locality Guide](https://earthwonders.com/guides/bagdad-mine_usa_15217): Bagdad Mine, USA — Arizona porphyry copper locality prized by collectors for blue chrysocolla in quartz pockets, malachite accents, and rare minerals. - [Bahia, Brazil Locality Guide](https://earthwonders.com/guides/bahia_brazil_15350): Bahia, Brazil — a collector-grade locality with emerald, rutile-in-quartz, blue euclase, and dumortierite; prized for variety, top localities, and inclusions. - [Baia de Arieș, Romania Locality Guide](https://earthwonders.com/guides/baia-de-arie_romania_15381): Baia de Arieș, Romania — type locality of sylvanite; epithermal Au-Ag-Te veins in the Metaliferi Mountains produce striking dendritic sylvanite on quartz. - [Baia Mare, Romania Locality Guide](https://earthwonders.com/guides/baia-mare_romania_15387): Baia Mare, Romania — Neogene mining district on the Gutâi Mountains, home to stibnite, baryte, calcite, sphalerite, galena, and rarities prized by collectors. - [Baia Sprie, Romania Locality Guide](https://earthwonders.com/guides/baia-sprie_romania_15391): Baia Sprie, Romania - a famed European polymetallic vein locality yielding stibnite sprays, barite, realgar, and scheelite; sculptural, old-European crystals p… - [Bairendaba Ag-polymetallic deposit, China Locality Guide](https://earthwonders.com/guides/bairendaba-ag-polymetallic-deposit_china_15605): A collector's guide to Bairendaba Ag-polymetallic deposit, China: its geology, mining history and notable minerals, illustrated with the 30 specimens documented from this locality on EarthWonders. - [Baja California, Mexico Locality Guide](https://earthwonders.com/guides/baja-california_mexico_15709): Baja California, Mexico — sulfur from the San Felipe field, plus opal and epidote; a collector-favored locality for signature Baja specimens and history. - [Balcoll Mine, Spain Locality Guide](https://earthwonders.com/guides/balcoll-mine_spain_16010): Balcoll Mine, Spain — historic epithermal locality yielding native silver with calcite gangue and acanthite; prized for skeletal, dendritic formations. - [Ballard Mine, USA Locality Guide](https://earthwonders.com/guides/ballard-mine_usa_16315): Ballard Mine, USA — a classic Tri-State locality in Cherokee County, Kansas, part of the Picher Field, yielding ruby-jack sphalerite on pale chert with chalcop… - [Balmat, USA Locality Guide](https://earthwonders.com/guides/balmat_usa_16444): Balmat, USA: renowned zinc locality in the Adirondack Lowlands, yielding magnetite, sphalerite, calcite, and rare manganese minerals prized by collectors. - [Balochistan, Pakistan Locality Guide](https://earthwonders.com/guides/balochistan_pakistan_16475): A collector's guide to Balochistan, Pakistan: its geology, mining history and notable minerals, illustrated with the 210 specimens documented from this locality on EarthWonders. - [Banská Štiavnica, Slovakia Locality Guide](https://earthwonders.com/guides/bansk-tiavnica_slovakia_17044): A collector's guide to Banská Štiavnica, Slovakia: its geology, mining history and notable minerals, illustrated with the 198 specimens documented from this locality on EarthWonders. - [Barite from Cavnic Mine, Romania](https://earthwonders.com/guides/barite_from_cavnic_romania_44800): Barite from Cavnic Mine, Romania — blue to orange-red tabular crystals in rosettes, prized for translucency and Cavnic's famed vein system for collectors. - [Barite from Frizington Mine, Cumbria, England](https://earthwonders.com/guides/barite_from_frizington-mine_uk_88290): Frizington Barite, Cumbria: pale blue to blue-green tabular crystals, often doubly terminated with hematite; prized for color, form, and historic locality. - [Barite from Cerro Warihuyn, Peru](https://earthwonders.com/guides/barite_from_cerro-warihuyn_peru_46257): Barite, Cerro Warihuyn, Peru — famed locality with glassy honey-yellow to smoky-blue tabular crystals on pink dolomite, prized for clarity, form, and rarity. - [Barite from Pöhla-Tellerhäuser Mine, Germany](https://earthwonders.com/guides/barite_from_phla-tellerhuser-mine_germany_200815): Barite from Pöhla-Tellerhäuser Mine, Germany: golden honey-yellow orthorhombic crystals on quartz/fluorite, prized for color, form, and classic pedigree. - [Barite](https://earthwonders.com/guides/barite): Barite: dense barium sulfate prized for blue blades and honey clusters; top localities include Elk Creek, Meikle, Spain, Morocco; quality factors and care. - [Barite from Meikle Mine, Nevada, USA](https://earthwonders.com/guides/barite_from_meikle-mine_usa_161521): Meikle Mine barite - high-grade lemon-yellow to amber crystals with glassy faces from a Carlin-type system; prized for color, luster, and standout locality. - [Barra do Salinas District, Brazil Locality Guide](https://earthwonders.com/guides/barra-do-salinas-district_brazil_17943): Barra do Salinas, Brazil — famed for multicolored elbaite tourmaline and rare-element pegmatites, plus blue kyanite pockets; a historic, collector-worthy local… - [Barytocalcite from Nentsberry Haggs Mine, UK](https://earthwonders.com/guides/barytocalcite_from_nentsberry-haggs-mine_uk_177732): Nentsberry Haggs Mine, Cumbria: a notable locality for ruby-red sphalerite and honey-brown barytocalcite, witherite and galena—appealing to collectors. - [Basha Valley, Pakistan Locality Guide](https://earthwonders.com/guides/basha-valley_pakistan_18506): A collector's guide to Basha Valley, Pakistan: its geology, mining history and notable minerals, illustrated with the 40 specimens documented from this locality on EarthWonders. - [Batalha Mine, null Locality Guide](https://earthwonders.com/guides/batalha-mine_null_573281): Batalha Mine, Paraíba, famed cuprian elbaite tourmaline with neon blue hues; rare, well-provenanced display crystals prized by collectors. - [Batopilas, Mexico Locality Guide](https://earthwonders.com/guides/batopilas_mexico_18886): A collector's guide to Batopilas, Mexico: its geology, mining history and notable minerals, illustrated with the 62 specimens documented from this locality on EarthWonders. - [Baveno, Italy Locality Guide](https://earthwonders.com/guides/baveno_italy_570472): Baveno, Italy — renowned feldspar locality on Lago Maggiore; pink orthoclase from miarolitic cavities with smoky quartz and rare Be/Sc minerals, prized for twi… - [Baxter Springs, USA Locality Guide](https://earthwonders.com/guides/baxter-springs_usa_19190): Baxter Springs, USA - Classic Kansas locality in the Tri-State lead-zinc district, yielding galena, sphalerite, marcasite, calcite, quartz prized by collectors. - [Beckermet Mine, UK Locality Guide](https://earthwonders.com/guides/beckermet-mine_uk_20416): A collector's guide to Beckermet Mine, UK: its geology, mining history and notable minerals, illustrated with the 49 specimens documented from this locality on EarthWonders. - [Beihilfe Mine, Germany Locality Guide](https://earthwonders.com/guides/beihilfe-mine_germany_20797): Beihilfe Mine, Germany — a defining Freiberg locality for cubic fluorite in blue to yellow, often with galena, sphalerite and barite; famed for the 1964 Blaue… - [Bellerberg volcano, Germany Locality Guide](https://earthwonders.com/guides/bellerberg-volcano_germany_21282): A collector's guide to Bellerberg volcano, Germany: its geology, mining history and notable minerals, illustrated with the 44 specimens documented from this locality on EarthWonders. - [Belqeys Mountain, null Locality Guide](https://earthwonders.com/guides/belqeys-mountain_null_573258): A collector's guide to Belqeys Mountain, null: its geology, mining history and notable minerals, illustrated with the 77 specimens documented from this locality on EarthWonders. - [Belshazzar Mine, USA Locality Guide](https://earthwonders.com/guides/belshazzar-mine_usa_21612): Belshazzar Mine, USA - Idaho locality known for quartz-gold and bismuth minerals, with brassy-yellow free gold in wires and complex crystalline growths. - [Belvidere Mountain Quarries, USA Locality Guide](https://earthwonders.com/guides/belvidere-mountain-quarries_usa_21671): Belvidere Mountain Quarries, USA — famed for orange grossular in rodingite pockets with diopside and vesuvianite; a classic Vermont locality for collectors. - [Benchmark Quarry, USA Locality Guide](https://earthwonders.com/guides/benchmark-quarry_usa_21809): Benchmark Quarry, USA — notable eastern Herkimer-style locality in Cambrian dolostone; quartz pockets with doubly terminated crystals, calcite, and marcasite. - [Ben Hogan Quarry, USA Locality Guide](https://earthwonders.com/guides/ben-hogan-quarry_usa_21957): Ben Hogan Quarry, USA: Ozark MVT locality yielding pink dolomite and amber sphalerite with calcite; prized for lustrous curved dolomite rhombs and druses. - [Benitoite](https://earthwonders.com/guides/benitoite): Benitoite - rare barium titanium cyclosilicate with sapphire-blue, sharp triangular crystals and vivid UV fluorescence; locality California State Gem Mine. - [Benitoite from California State Gem Mine, USA](https://earthwonders.com/guides/benitoite_from_california-state-gem-mine_usa_39978): Benitoite — California State Gem Mine, USA. Type locality; saturated blue crystals with natrolite and neptunite, high collector appeal and UV fluorescence. - [Benitoite from California State Gem Mine](https://earthwonders.com/guides/benitoite-from_california-state-gem-mine_usa_39978): Benitoite - collector's guide on value, top localities (California State Gem Mine), quality factors, and care tips for pristine crystals. - [Benitoite from San Benito County, USA](https://earthwonders.com/guides/benitoite_from_san-benito-county_usa_225035): Benitoite - striking indigo-blue triangular crystals from San Benito County, a one-locality marvel with natrolite and California’s state gemstone status. - [Benitoite Gem Mine, USA Locality Guide](https://earthwonders.com/guides/benitoite-gem-mine_usa_573245): Benitoite Gem Mine, USA - California state gemstone locality famed for sapphire-blue benitoite crystals on natrolite, with rare paragenesis and collector value. - [Bennett quarry, Buckfield, null Locality Guide](https://earthwonders.com/guides/bennett-quarry-buckfield_null_573369): Bennett quarry, Buckfield - classic Maine rare-element pegmatite famed for Rose of Maine morganite, gem tourmaline, elbaite, and striking replacement zones. - [Berbes mining area, Spain Locality Guide](https://earthwonders.com/guides/berbes-mining-area_spain_22311): Berbes mining area, Spain — renowned coastal locality for glassy purple fluorite cubes with color zoning, often on barite and quartz, prized by collectors. - [Berbes, Spain Locality Guide](https://earthwonders.com/guides/berbes_spain_22310): A collector's guide to Berbes, Spain: its geology, mining history and notable minerals, illustrated with the 142 specimens documented from this locality on EarthWonders. - [Berezovskii, Ekaterinburg, null Locality Guide](https://earthwonders.com/guides/berezovskii-ekaterinburg_null_573287): Berezovskii, Ekaterinburg - Middle Urals gold-quartz deposit, cradle of crocoite, with oxidized zones and notable minerals for collectors. - [Berg Aukas Mine, Namibia Locality Guide](https://earthwonders.com/guides/berg-aukas-mine_namibia_22408): Berg Aukas Mine, Namibia - a premier Otavi Mountainland locality famed for dark descloizite crystals, vanadates, and rich smithsonite, prized by collectors. - [Bergmännisch Glück Mine, Germany Locality Guide](https://earthwonders.com/guides/bergmnnisch-glck-mine_germany_571835): Bergmännisch Glück Mine, Germany - classic Erzgebirge locality famed for color-zoned fluorite, often with barite, chalcopyrite, and hematite staining, prized b… - [Berilo Branco claim, Brazil Locality Guide](https://earthwonders.com/guides/berilo-branco-claim_brazil_22575): Berilo Branco, Brazil — a small pegmatite locality in Minas Gerais famed for crystalline rose quartz with smoky quartz, shaping world-class specimens. - [Berkshire County, USA Locality Guide](https://earthwonders.com/guides/berkshire-county_usa_22615): Berkshire County, USA — a diverse collecting locale famed for almandine-rich garnet-schist, historic Richmond gibbsite type-locality, and old-iron ore geology. - [Berry Materials Corp. Quarry, USA Locality Guide](https://earthwonders.com/guides/berry-materials-corp-quarry_usa_22845): Berry Materials Corp. Quarry, USA — classic Midwest locality famed for honey-gold calcite crystals in rhombohedral-prismatic forms from Devonian limestone. - [Beryl from Erongo Mountains, Namibia](https://earthwonders.com/guides/beryl_from_erongo-mountains_namibia_78994): Beryl from the Erongo Mountains is one of the modern classics of African mineral collecting: blue to blue-green aquamarine, colorless goshenite, yellow heliodor-like beryl, green beryl, and sharply zo... - [Beryl](https://earthwonders.com/guides/beryl): Beryl — iconic mineral with prisms and vivid color varieties (aquamarine, emerald, morganite); prized for crystal form, striking matrix, and collector appeal. - [Beryl from Muzo Mine, Colombia](https://earthwonders.com/guides/beryl_from_muzo-mine_colombia_174952): Muzo Emeralds, Colombia: famed beryl from a black-shale carbonate vein system, renowned for vivid green color, glassy hexagonal prisms, and collector appeal. - [Beryl from Chumar Bakhoor, Pakistan](https://earthwonders.com/guides/beryl_from_chumar-bakhoor_pakistan_50993): Chumar Bakhoor, Pakistan — pale aquamarine beryl on mica blades in gem pegmatites; prized for crystal-to-matrix aesthetics, luster, and collector appeal. - [Beryl from Mount Antero, USA](https://earthwonders.com/guides/beryl_from_mt-antero_usa_173263): Mount Antero beryl, high-altitude Colorado aquamarine from gem-rich pegmatites, prized for blue prisms and pocket specimens - the Colorado state gemstone. - [Beryl from Chivor Mine, Colombia](https://earthwonders.com/guides/beryl_from_chivor-mine_colombia_50174): Chivor beryl, Colombia — a renowned emerald locality known for sharp emerald prisms on pale matrix with vivid blue-green color and collecting appeal. - [Beryl from Panjshir, Afghanistan](https://earthwonders.com/guides/beryl_from_panjshir_afghanistan_192341): Panjshir emeralds, Afghanistan - vivid green beryl with zoned hexagonal prisms from hydrothermal veins; prized for provenance and complete matrix specimens. - [Beryl from Kagem Emerald Mine, Zambia](https://earthwonders.com/guides/beryl_from_kagem-emerald-mine_zambia_125237): Kagem Emerald Mine, Zambia — home to specimen-grade emerald beryl with deep blue-green to golden-green color, and distinctive schist geology prized by collecto… - [Beryozovsky, Russia Locality Guide](https://earthwonders.com/guides/beryozovsky_russia_573199): Beryozovsky, Russia — historic Urals locality famed for crocoite and gold veins, and a suite of chromates prized by collectors from a long-lived hydrothermal s… - [Betroka District, Madagascar Locality Guide](https://earthwonders.com/guides/betroka-district_madagascar_23317): Betroka District, Madagascar — renowned for gem-quality sanidine feldspar from Itrongay and rare pegmatite minerals, prized by collectors, transparency and col… - [Bierghes quarry, null Locality Guide](https://earthwonders.com/guides/bierghes-quarry_null_573263): Bierghes quarry — Belgian locality famed for Alpine-like quartz fissures, faden quartz, and Muzo-habit crystals; prized for rarity and striking aesthetics. - [Bigrigg Mine, UK Locality Guide](https://earthwonders.com/guides/bigrigg-mine_uk_24756): Bigrigg Mine, UK - classic calcite locality near Egremont, famed for sharp glassy to milky prisms and scalenohedra with hematite tinting, prized by collectors. - [Bingham Canyon Mine, null Locality Guide](https://earthwonders.com/guides/bingham-canyon-mine_null_573255): Bingham Canyon Mine - a world-class porphyry Cu-Mo-Au locality, notable for display-worthy pyrite on quartz and rare wavellite, prized by collectors. - [Bingham, USA Locality Guide](https://earthwonders.com/guides/bingham_usa_25257): Bingham, New Mexico — a compact Rio Grande Rift locality famed for blue fluorite cubes, barite, and galena, with cabinet-quality specimens from vugs and seams. - [Binn Valley, Switzerland Locality Guide](https://earthwonders.com/guides/binn-valley_switzerland_25326): Binn Valley, Switzerland — renowned Alpine locality for quartz, anatase, rutile, magnetite, and the Lengenbach sulfosalt assemblage, prized by collectors. - [Bisbee, USA Locality Guide](https://earthwonders.com/guides/bisbee_usa_25644): Bisbee, USA: a historic copper-ore district famed for blue-green malachite, azurite roses, cuprite, native copper, and sculptural copper-carbonate forms. - [Bismuth from Schlema-Hartenstein Mining District, Germany](https://earthwonders.com/guides/bismuth_from_schlema-hartenstein-mining-district_germany_230058): Schlema-Hartenstein Bismuth: native bismuth from the Erzgebirge, famed for silvery-gray crystals with pink-blue patina, compact masses, and rich mining history. - [Bismuth](https://earthwonders.com/guides/bismuth): Bismuth — native crystals prized for iridescent patina and high density; rare provenance-driven pieces from Saxony and Jáchymov attract serious collectors. - [Blackbird mine, USA Locality Guide](https://earthwonders.com/guides/blackbird-mine_usa_26200): Blackbird mine, USA - iconic Idaho locality known for green ludlamite crystals and purple to blue vivianite, with prized matrix specimens and collecting appeal. - [Blackbird Mine, USA Locality Guide](https://earthwonders.com/guides/blackbird-mine_usa_26205): Blackbird Mine, Idaho — cobalt-copper district yielding phosphate minerals, notably ludlamite and vivianite, prized as a closed-locality classic. - [Blackdene Mine, UK Locality Guide](https://earthwonders.com/guides/blackdene-mine_uk_26410): Blackdene Mine, UK — Weardale classic for purple fluorite cubes with galena and calcite; famed cabinet pieces and finite supply since the mine closed. - [Black Pine Mine, USA Locality Guide](https://earthwonders.com/guides/black-pine-mine_usa_27085): Black Pine Mine — Montana blue-green collector locality known for veszelyite on quartz, Japan-law quartz twins, tetrahedrite, and rare arsenates; prized for th… - [Black Rapids Mine, Canada Locality Guide](https://earthwonders.com/guides/black-rapids-mine_canada_27152): A collector's guide to Black Rapids Mine, Canada: its geology, mining history and notable minerals, illustrated with the 101 specimens documented from this locality on EarthWonders. - [Black Rock Mine, South Africa Locality Guide](https://earthwonders.com/guides/black-rock-mine_south-africa_27221): A collector's guide to Black Rock Mine, South Africa: its geology, mining history and notable minerals, illustrated with the 44 specimens documented from this locality on EarthWonders. - [Black Rock, USA Locality Guide](https://earthwonders.com/guides/black-rock_usa_27185): Black Rock, Arkansas — Ozark carbonate-pocket locality known for pink dolomite, calcite, chalcopyrite, and sphalerite; prized for color, texture, and locality… - [Blackstone Mine, USA Locality Guide](https://earthwonders.com/guides/blackstone-mine_usa_27349): A collector's guide to Blackstone Mine, USA: its geology, mining history and notable minerals, illustrated with the 21 specimens documented from this locality on EarthWonders. - [Blanchard Mine, USA Locality Guide](https://earthwonders.com/guides/blanchard-mine_usa_27656): Blanchard Mine, USA — famed New Mexico locality for blue fluorite, crystal cubes with purple edges set on quartz druses; a classic for specimen collectors. - [Blue Bed #1, USA Locality Guide](https://earthwonders.com/guides/blue-bed-1_usa_574864): Blue Bed 1, USA — Oregon thunderegg locality known for blue chalcedony, agate and opal in lithophysae; prized for calm palettes, cut surfaces, and Priday prove… - [Bohemia, Czech Republic Locality Guide](https://earthwonders.com/guides/bohemia_czech-republic_29814): A collector's guide to Bohemia, Czech Republic: its geology, mining history and notable minerals, illustrated with the 200 specimens documented from this locality on EarthWonders. - [Boise County, USA Locality Guide](https://earthwonders.com/guides/boise-county_usa_29941): Boise County, USA - a diverse collecting locality with blue aquamarine from miarolitic granite, smoky quartz, fluorite, and historic placers with native gold. - [Boldut Mine, Romania Locality Guide](https://earthwonders.com/guides/boldut-mine_romania_30125): Boldut Mine, Romania: Cavnic locality famed for cavity quartz, calcite, rhodochrosite, chalcopyrite and pyrite, prized by collectors. - [Boleite from Mammoth–Saint Anthony Mine, Arizona, USA](https://earthwonders.com/guides/boleite_from_mammoth-saint-anthony-mine_usa_155478): Boleite from Mammoth-Saint Anthony Mine, Arizona: blue cubic crystals, micro-mineral beauty, with Tiger locality associations to diaboleite and cerussite. - [Boleite](https://earthwonders.com/guides/boleite): Boleite: royal blue cubic crystals 1–2 cm from Baja California Sur; iconic, rare, and highly prized for color, rarity, and cumengeite star associations. - [Boltsburn Mine, UK Locality Guide](https://earthwonders.com/guides/boltsburn-mine_uk_30283): Boltsburn Mine, UK - a classic Weardale locality known for large, color-zoned fluorite cubes with siderite, galena, and quartz pockets, prized by collectors. - [Bombay Quarry, India Locality Guide](https://earthwonders.com/guides/bombay-quarry_india_30317): Bombay Quarry, India — a classic Deccan Trap locality yielding white okenite puffballs and gyrolite spheres in dark basalt, with cavities prized by collectors. - [Bombori, Bolivia Locality Guide](https://earthwonders.com/guides/bombori_bolivia_30330): Bombori, Bolivia locality - amethyst and enhydro quartz from shallow pits; distinctive scepter and reverse-scepter crystals with calcite association, prized by… - [Borieva Mine, Bulgaria Locality Guide](https://earthwonders.com/guides/borieva-mine_bulgaria_31262): Borieva Mine, Bulgaria: premier Madan locality famed for mirror-bright galena crystals on quartz and calcite, with architectural forms prized by collectors. - [Bornite](https://earthwonders.com/guides/bornite): Bornite - vivid iridescent tarnish, metallic luster, and rare sharp crystals; formed in diverse deposits and prized by collectors for color, rarity, and histor… - [Bornite from Dzhezkazgan mining district, Kazakhstan](https://earthwonders.com/guides/bornite_from_dzhezkazgan-mining-district_kazakhstan_73046): Dzhezkazgan bornite from Kazakhstan - benchmark locality for display crystals, with sharp pseudo-isometric forms and rich dark tarnish on pale matrix. - [Bornite from Butte Mining District, Montana, USA](https://earthwonders.com/guides/bornite_from_butte-mining-district_usa_38464): Butte Mining District, Montana — renowned for bornite and copper-sulfide minerals, a rich ore history, and collector-worthy, iridescent specimens. - [Boron Open Pit, Boron, Kern County, USA Locality Guide](https://earthwonders.com/guides/boron-open-pit-boron-kern-county_usa_574670): Boron Open Pit, Boron, Kern County, USA — a major borate locality producing colemanite, ulexite, borax and kernite; prized for color crystals and rare borates. - [Boron, USA Locality Guide](https://earthwonders.com/guides/boron_usa_31341): Boron, USA - Kramer borate deposit, a Miocene evaporite system yielding colemanite blades, ulexite, borax, kernite; renowned for mineral variety and paragenesi… - [Bor Pit, Russia Locality Guide](https://earthwonders.com/guides/bor-pit_russia_31375): Bor Pit, Russia — Dalnegorsk borosilicate skarn locality yielding datolite, danburite, quartz, calcite; famed for large green crystals and rare dalnegorskite. - [Bottino Mine, Italy Locality Guide](https://earthwonders.com/guides/bottino-mine_italy_31803): A collector's guide to Bottino Mine, Italy: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Bou Azzer Mine, Morocco Locality Guide](https://earthwonders.com/guides/bou-azzer-mine_morocco_31846): Bou Azzer Mine, Morocco — premier cobalt district producing arsenides, erythrite, and roselite; famed for dramatic color, rarity, and collector locality appeal. - [Bou Azzer mining district, Morocco Locality Guide](https://earthwonders.com/guides/bou-azzer-mining-district_morocco_31847): Bou Azzer mining district, Morocco - renowned for cobalt-rich ore and arsenide and carbonate specimens, with vivid erythrite and roselite prized by collectors. - [Bou Beker, Morocco Locality Guide](https://earthwonders.com/guides/bou-beker_morocco_31849): Bou Beker, Morocco — classic northeast lead-zinc belt locality, producing azurite, malachite, brochantite and related minerals prized by collectors. - [Bouismas, Morocco Locality Guide](https://earthwonders.com/guides/bouismas_morocco_31949): Bouismas, Morocco — silver-rich locality known for arborescent native silver with dyscrasite, calcite, and related minerals; a coveted window for collectors. - [Boulby Mine, UK Locality Guide](https://earthwonders.com/guides/boulby-mine_uk_31978): Boulby Mine, UK — a North Sea evaporite locality famed for boracite-group minerals, especially sea-green to blue-green boracite crystals; access is controlled. - [Bou Nahas mine, Morocco Locality Guide](https://earthwonders.com/guides/bou-nahas-mine_morocco_573198): A collector's guide to Bou Nahas mine, Morocco: its geology, mining history and notable minerals, illustrated with the 89 specimens documented from this locality on EarthWonders. - [Bournonite from Yaogangxian Mine, China](https://earthwonders.com/guides/bournonite_from_yaogangxian-mine_china_296590): Bournonite from Yaogangxian Mine, China: silvery gray, sharply crystallized crystals with twinning; part of a rich hydrothermal assemblage prized by collectors. - [Bournonite](https://earthwonders.com/guides/bournonite): Bournonite — steel-gray to black sulfosalt famed for cogwheel twinning and metallic luster; prized by collectors for iconic gears and historic localities. - [Bournonite from Herodsfoot Mine, Cornwall, UK](https://earthwonders.com/guides/bournonite_from_herodsfoot-mine_uk_109030): Herodsfoot Mine, Cornwall, UK — classic bournonite with cogwheel twins, dark metallic luster, often on quartz; prized for provenance and sculptural form. - [Boyacá Department, Colombia Locality Guide](https://earthwonders.com/guides/boyac-department_colombia_32766): Boyacá Department, Colombia — world-famous emerald locality with hexagonal beryl in carbonate veins, historic mines (Muzo, Coscuez, Chivor), and prized collect… - [Braen Quarry, USA Locality Guide](https://earthwonders.com/guides/braen-quarry_usa_33070): Braen Quarry, USA — a premier trap-rock locality in Preakness Basalt, notable for stellerite and stilbite, gemmy datolite, and New Jersey tradition. - [Braldu Valley, Pakistan Locality Guide](https://earthwonders.com/guides/braldu-valley_pakistan_33136): Braldu Valley, Pakistan — premier Karakoram pegmatite locality known for aquamarine on white feldspar with schorl, muscovite, and striking mineral specimens. - [Brandberg Area, Namibia Locality Guide](https://earthwonders.com/guides/brandberg-area_namibia_33199): A collector's guide to Brandberg Area, Namibia: its geology, mining history and notable minerals, illustrated with the 301 specimens documented from this locality on EarthWonders. - [Brazilianite from Linópolis District, Divino das Laranjeiras, Minas Gerais, Brazil](https://earthwonders.com/guides/brazilianite_from_linpolis_brazil_146152): Brazilianite from Linópolis, Minas Gerais: chartreuse to yellow-green crystals with vitreous luster, prized from Córrego Frio pegmatites for rarity and localit… - [Brazilianite](https://earthwonders.com/guides/brazilianite): Brazilianite — luminous yellow to yellow-green crystals with glassy luster from Minas Gerais, Jequitinhonha Valley; prized for size, color, and sculptural matr… - [Brazilianite from Córrego Frio Mine, Minas Gerais, Brazil](https://earthwonders.com/guides/brazilianite_from_crrego-frio-mine_brazil_58377): Córrego Frio Mine, Minas Gerais - Brazilianite from the type locality, prized for sharp, yellow-green, gemmy prisms; historically important with strong collect… - [Brazil Locality Guide](https://earthwonders.com/guides/brazil_23): Brazil, a vast collecting province, centers on Minas Gerais pegmatites yielding elbaite tourmaline, quartz, beryl, rare phosphates, and famed amethyst geodes. - [Brevik, Norway Locality Guide](https://earthwonders.com/guides/brevik_norway_33976): Brevik, Norway — a premier calcite locality noted for diverse crystal forms, amber translucency, and pyrite phantoms, highly sought after by collectors. - [Bristol Copper Mine, USA Locality Guide](https://earthwonders.com/guides/bristol-copper-mine_usa_34467): Bristol Copper Mine, USA - famed for twinned, lustrous chalcocite crystals on calcite/quartz, with historic provenance and rare copper-sulfide associations. - [British Columbia, Canada Locality Guide](https://earthwonders.com/guides/british-columbia_canada_34513): British Columbia, Canada: a Cordilleran locality yielding Moyie pyromorphite, Kamloops Lake ferrierite, and Cariboo gold; diverse specimens prized by collector… - [Brochantite from Bisbee, Arizona, USA](https://earthwonders.com/guides/brochantite_from_bisbee_usa_25644): Brochantite from Bisbee, Arizona: dark emerald to blackish-green prismatic crystals in copper-oxide matrix, formed in oxidized copper deposits, a Bisbee classi… - [Brochantite from Tsumeb, Namibia](https://earthwonders.com/guides/brochantite_from_tsumeb_namibia_261664): Brochantite from Tsumeb, Namibia — a supergene copper sulfate with velvety green crusts and acicular crystals, oxidation-zone textures aiding identification. - [Brochantite from Milpillas Mine, Mexico](https://earthwonders.com/guides/brochantite_from_milpillas-mine_mexico_165066): Brochantite - Milpillas Mine, Mexico: emerald-green crystals with chisel terminations; superb display quality, high luster, premier provenance for collectors. - [Brochantite](https://earthwonders.com/guides/brochantite): Brochantite - emerald-green prisms and silky sprays of a copper sulfate hydroxide; valued for vivid color, varied crystal habits, and copper-collection appeal. - [Broken Hill, Australia Locality Guide](https://earthwonders.com/guides/broken-hill_australia_34725): A collector's guide to Broken Hill, Australia: its geology, mining history and notable minerals, illustrated with the 727 specimens documented from this locality on EarthWonders. - [Brookite](https://earthwonders.com/guides/brookite): Brookite, a rare TiO2 polymorph, forms sharp wedge-like crystals with adamantine luster and brown-to-amber colors; localities include Pakistan and Magnet Cove. - [Brookite from Kharan District, Pakistan](https://earthwonders.com/guides/brookite_from_kharan-district_pakistan_129083): Brookite from Kharan District, Pakistan — sharply formed TiO2 blades with red-orange transparency, dramatic black phantoms on quartz, a standout Alpine classic. - [Brownley Hill Mine, UK Locality Guide](https://earthwonders.com/guides/brownley-hill-mine_uk_35163): Brownley Hill Mine, UK - a classic Northern Pennine locality yielding sphalerite, galena, fluorite, baryte, and rare alstonite and brianyoungite. - [Brown's Prospect, Australia Locality Guide](https://earthwonders.com/guides/browns-prospect_australia_35304): Brown's Prospect, Australia — famed locality yielding vivid malachite with pyromorphite and cerussite; prized for rare, intensely colored botryoidal specimens. - [Brucite from Killa Saifullah District, Pakistan](https://earthwonders.com/guides/brucite_from_killa-saifullah_pakistan_129620): Brucite from Killa Saifullah, Pakistan: saturated lemon-yellow color, translucent botryoidal forms, and formation as an alteration product in serpentinite. - [Brucite from Wood’s Chrome Mine, Lancaster County, Pennsylvania, USA](https://earthwonders.com/guides/brucite_from_woods-chrome-mine_usa_294637): Wood’s Chrome Mine is the classic American locality for crystallized brucite. Its best specimens are not merely “old Pennsylvania” curiosities; they are benchmark brucites: pale, lustrous, translucent... - [Brucite](https://earthwonders.com/guides/brucite): Brucite (Mg(OH)2) - vivid lemon-yellow to blue hues; delicate with perfect cleavage, prized for translucent, sculptural forms from Pakistan and Henan. - [Brumado, Brazil Locality Guide](https://earthwonders.com/guides/brumado_brazil_35493): Brumado, Brazil — renowned magnesite district in Serra das Éguas, yielding glassy magnesite rhombs and tourmalines; a key collector locality with rare minerals. - [Brushy Creek Mine, USA Locality Guide](https://earthwonders.com/guides/brushy-creek-mine_usa_35663): Brushy Creek Mine, USA - Viburnum Trend locality famed for gray calcite dogtooth crystals, iridescent sulfides, and deep-zone mineralization prized by collecto… - [Brusson Mine, Italy Locality Guide](https://earthwonders.com/guides/brusson-mine_italy_565209): Brusson Mine, Italy - Alpine gold locality famed for bright native gold in quartz veins, the Fenillaz lode, and rich pockets prized by collectors. - [Buckwheat dump mineral collecting site, USA Locality Guide](https://earthwonders.com/guides/buckwheat-dump-mineral-collecting-site_usa_36294): Buckwheat Dump — Franklin Mine, New Jersey: abundant franklinite and willemite with zincite and calcite, plus UV-fluorescent varieties for dedicated collectors. - [Buffalo, USA Locality Guide](https://earthwonders.com/guides/buffalo_usa_36529): Buffalo, USA — Linwood Mine and LaFarge/Buffalo quarry yield calcite, barite, marcasite, pyrite, sphalerite; prized glassy calcite pockets draw collectors. - [Buick Mine, USA Locality Guide](https://earthwonders.com/guides/buick-mine_usa_36740): Buick Mine, USA — Missouri locality for sharp galena cubes and rare siegenite, brassy marcasite on dolomite, orange calcite scalenohedrons, and vivid sulfides. - [Bulochi, Pakistan Locality Guide](https://earthwonders.com/guides/bulochi_pakistan_37257): A collector's guide to Bulochi, Pakistan: its geology, mining history and notable minerals, illustrated with the 46 specimens documented from this locality on EarthWonders. - [Bunker Hill Mine, USA Locality Guide](https://earthwonders.com/guides/bunker-hill-mine_usa_37415): Bunker Hill Mine, USA - renowned for orange to yellow-green pyromorphite and cerussite from oxidized veins; a Coeur d’Alene locality prized by collectors. - [Burkhard’s Pocket, Pederneira Mine, São José da Safira, Brazil Locality Guide](https://earthwonders.com/guides/burkhards-pocket-pederneira-mine-so-jos-da-safira_brazil_573370): Burkhard’s Pocket, Pederneira Mine, Brazil — a premier locality for red-and-blue tourmalines in evolved pegmatite, with pristine pockets and striking matrix. - [Buskerud, Norway Locality Guide](https://earthwonders.com/guides/buskerud_norway_38196): Buskerud, Norway — Kongsberg native-silver veins, Modum cobalt-arsenides, and Snarum magnesite-phosphates; mines and type-mineral finds appeal to collectors. - [Butte Mining District, USA Locality Guide](https://earthwonders.com/guides/butte-mining-district_usa_38464): Butte Mining District, USA - famed copper-molybdenum vein system yielding museum-grade ore specimens, enargite prisms, covellite plates, and rich collector app… - [Cabiche, Colombia Locality Guide](https://earthwonders.com/guides/cabiche_colombia_38982): A collector's guide to Cabiche, Colombia: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [Cabrestante Mine, Mexico Locality Guide](https://earthwonders.com/guides/cabrestante-mine_mexico_39081): Cabrestante Mine, Mexico: renowned for blue scorodite on quartz in the Concepción del Oro district, offering striking blue arsenate with collector cachet. - [Cäcilia Mine, Germany Locality Guide](https://earthwonders.com/guides/ccilia-mine_germany_39167): Cäcilia Mine, Germany — classic fluorite locality famed for greenish to honey-yellow pseudoscalenohedral fluorite, zoning, and Wölsendorf specimens. - [Calaveras Mine, USA Locality Guide](https://earthwonders.com/guides/calaveras-mine_usa_39564): Calaveras Mine, USA - Sierra Nevada skarn locality famed for red-brown andradite garnet in green epidote, with quartz cavities and striking collector specimens. - [Calcite from Leiping Mine, China](https://earthwonders.com/guides/calcite_from_leiping-mine_china_142369): Calcite from Leiping Mine, in the Leiping area of Guiyang County, Chenzhou, Hunan, is one of the unmistakable modern Chinese calcite styles: lustrous, sharp, often translucent to gemmy crystals animat... - [Calcite from Elmwood Mine, USA](https://earthwonders.com/guides/calcite_from_elmwood-mine_usa_76987): Elmwood Mine calcite — iconic amber scalenohedra from a historic Tennessee locality, prized for form, color, and cabinet display by collectors. - [Calcite from Dalnegorsk, Russia](https://earthwonders.com/guides/calcite_from_dalnegorsk_russia_63378): Dalnegorsk, Russia: Calcite crystals with sharp, glassy prisms in pink manganoan to colorless forms; a notable mining district with diverse associations and co… - [Calcite](https://earthwonders.com/guides/calcite): Calcite — diverse shapes, colors, and optical quirks; widely available yet scarce elite pieces from Elmwood and Charcas drive collecting value and display. - [Calcite from Charcas, Mexico](https://earthwonders.com/guides/calcite_from_charcas_mexico_47694): Calcite from Charcas, Mexico features flattened hexagonal rhombohedra, pink-to-red fluorescence, and sculptural poker-chip forms from a Pb-Zn-Cu-Ag district. - [Calcite from Cavnic Mine, Romania](https://earthwonders.com/guides/calcite_from_cavnic-mine_romania_44801): Calcite from Cavnic Mine, Romania: pearly white rhombs on dark ore with pink manganoan blades; famed for sculptural forms and rich mineral associations. - [Calcite from Bou Azzer mining district, Morocco](https://earthwonders.com/guides/calcite_from_bou-azzer-mining-district_morocco_31847): Calcite from Bou Azzer, Morocco - cobalt-bearing pink calcite with saturated body color, high luster, and gemmy crystals, a prized locality for collectors. - [Calcite from Yaogangxian Mine, China](https://earthwonders.com/guides/calcite_from_yaogangxian-mine_china_296590): Calcite from the Yaogangxian Mine is not merely an accessory carbonate on famous Chinese fluorites; at its best it is one of the visual signatures of the locality. Collectors most often encounter it a... - [Caldbeck Fells Mining Region, UK Locality Guide](https://earthwonders.com/guides/caldbeck-fells-mining-region_uk_39649): Caldbeck Fells, UK - a premier collector locality yielding lead phosphates, arsenates, copper sulfates, and the famed campylite; micromounts and mining lore. - [California Mine, Mt. Baldwin, Mt. Antero area, Chaffee County, USA Locality Guide](https://earthwonders.com/guides/california-mine-mt-baldwin-mt-antero-area-chaffee-county_usa_574681): California Mine, Mt. Baldwin — Chaffee County locality bridging Colorado aquamarine and Be-Mo vein minerals, with blue beryl in quartz-molybdenite contexts. - [California State Gem Mine, USA Locality Guide](https://earthwonders.com/guides/california-state-gem-mine_usa_39978): California State Gem Mine, USA — type locality for benitoite; gem-quality blue benitoite with natrolite and neptunite, highly prized by collectors. - [California, USA Locality Guide](https://earthwonders.com/guides/california_usa_39858): A collector's guide to California, USA: its geology, mining history and notable minerals, illustrated with the 266 specimens documented from this locality on EarthWonders. - [Calumet & Hecla Mine, USA Locality Guide](https://earthwonders.com/guides/calumet-hecla-mine_usa_40167): Calumet & Hecla Mine, USA - iconic Lake Superior copper locality yielding native copper in conglomerate and copper-silver; prized by collectors for form. - [Calumet, USA Locality Guide](https://earthwonders.com/guides/calumet_usa_40148): Calumet, Michigan - premier Keweenaw locality for native copper and copper-silver specimens, featuring hackly copper, golden patina, and a deep mining heritage. - [Cambokeels Mine, UK Locality Guide](https://earthwonders.com/guides/cambokeels-mine_uk_40350): A collector's guide to Cambokeels Mine, UK: its geology, mining history and notable minerals, illustrated with the 168 specimens documented from this locality on EarthWonders. - [Camborne-Redruth and St Day Mining District, UK Locality Guide](https://earthwonders.com/guides/camborne-redruth-and-st-day-mining-district_uk_40354): Camborne-Redruth and St Day Mining District, UK — famed for rich tin-copper lodes, copper-arsenate rarities, and historic Cornish collecting appeal. - [Campbell Mine, USA Locality Guide](https://earthwonders.com/guides/campbell-mine_usa_40620): A collector's guide to Campbell Mine, USA: its geology, mining history and notable minerals, illustrated with the 55 specimens documented from this locality on EarthWonders. - [Camp Bird Mine, USA Locality Guide](https://earthwonders.com/guides/camp-bird-mine_usa_40678): Camp Bird Mine, USA — Colorado’s classic locality for rich gold-in-quartz and notable scheelite pockets, with galena, sphalerite, and chalcopyrite; valued for… - [Camp Robin area, Madagascar Locality Guide](https://earthwonders.com/guides/camp-robin-area_madagascar_40934): Camp Robin area, Madagascar locality — multicolored tourmaline from gem-bearing pegmatites, a Madagascar source prized by collectors for liddicoatite varieties. - [Canada Locality Guide](https://earthwonders.com/guides/canada_31): Canada — a diverse locality guide of world-class specimens from Mont Saint-Hilaire, Cobalt, Thunder Bay, Bay of Fundy, and more, prized by serious collectors. - [Cananea, Mexico Locality Guide](https://earthwonders.com/guides/cananea_mexico_570387): Cananea, Mexico — historic copper district known for two collector favorites: pyrite-on-quartz crystals and turquoise nodules, especially Maria Mine pieces. - [Cantabria, Spain Locality Guide](https://earthwonders.com/guides/cantabria_spain_41525): A collector's guide to Cantabria, Spain: its geology, mining history and notable minerals, illustrated with the 133 specimens documented from this locality on EarthWonders. - [Capelinha, Brazil Locality Guide](https://earthwonders.com/guides/capelinha_brazil_41849): Capelinha, Brazil — renowned for titanite-epidote mineralization in metamorphic-hydrothermal veins; Campo do Boa and Fanadinho sources yield sharp crystals. - [Capillitas mining district, Argentina Locality Guide](https://earthwonders.com/guides/capillitas-mining-district_argentina_41932): Capillitas mining district, Argentina - famed rhodochrosite, dramatic banding, stalactite cross-sections, and a diverse suite of minerals prized by collectors. - [Caraş-Severin County, Romania Locality Guide](https://earthwonders.com/guides/cara-severin-county_romania_42173): A collector's guide to Caraş-Severin County, Romania: its geology, mining history and notable minerals, illustrated with the 48 specimens documented from this locality on EarthWonders. - [Carbonia-Iglesias Province, Italy Locality Guide](https://earthwonders.com/guides/carbonia-iglesias-province_italy_42300): A collector's guide to Carbonia-Iglesias Province, Italy: its geology, mining history and notable minerals, illustrated with the 60 specimens documented from this locality on EarthWonders. - [Carlota mine, Chile Locality Guide](https://earthwonders.com/guides/carlota-mine_chile_42586): Carlota mine, Chile - a high-Andean polymetallic locality yielding azurite and malachite; valued for striking blue on dark matrix and Chilean provenance. - [Carnaíba mining district, Brazil Locality Guide](https://earthwonders.com/guides/carnaba-mining-district_brazil_42746): Carnaíba mining district, Brazil — renowned emerald locality famed for chrome-green hexagonal beryl crystals set in dark mica schist, plus matrix pieces. - [Carn Brea Mine, UK Locality Guide](https://earthwonders.com/guides/carn-brea-mine_uk_42771): Carn Brea Mine, UK - classic Cornish collector locality renowned for old-time bornite crystals, with quartz, cassiterite, cuprite and native copper. - [Carrière Poudrette, Canada Locality Guide](https://earthwonders.com/guides/carrire-poudrette_canada_573268): Carrière Poudrette, Canada - Mont Saint-Hilaire's famed quarry yielding world-class serandite, natrolite, and rare eudialyte; a type-locality prized by collect… - [Carrollite from Kamoya South II Mine, DR Congo](https://earthwonders.com/guides/carrollite_from_kamoya-south-ii-mine_dr-congo_126062): Kamoya South II is the modern benchmark locality for carrollite. Its best specimens have the look that made the species famous among contemporary sulfide collectors: brilliant silver to steel-gray cry... - [Carrollite](https://earthwonders.com/guides/carrollite): Carrollite - cobalt-rich thiospinel with razor-sharp spinel-octahedral crystals, mirror luster, on contrasting carbonate matrices from the DRC and Bou Azzer. - [Cartagena, Spain Locality Guide](https://earthwonders.com/guides/cartagena_spain_43253): Cartagena, Spain — a famed Sierra Minera locality yielding argentiferous galena, sphalerite, barite, and oxides; prized for diversity and collecting appeal. - [Casapalca Mine, Peru Locality Guide](https://earthwonders.com/guides/casapalca-mine_peru_43504): Casapalca Mine, Peru — Andean polymetallic vein locality known for tetrahedrite and sphalerite in quartz, offering dramatic contrast and pocket specimens. - [Casapalca, Peru Locality Guide](https://earthwonders.com/guides/casapalca_peru_564806): Casapalca, Peru — a classic high-Andean locality for Ag-Pb-Zn-Cu sulfides, famed for sharp tetrahedrite crystals and historical significance to collectors. - [Cash Mine, Gold Hill, Gold Hill District, Boulder County, USA Locality Guide](https://earthwonders.com/guides/cash-mine-gold-hill-gold-hill-district-boulder-county_usa_574677): Cash Mine, Gold Hill, Colorado — a renowned collector locality yielding native gold with tellurides (hessite, petzite, sylvanite) in compact, dense miniatures. - [Cassiterite](https://earthwonders.com/guides/cassiterite): Cassiterite - mirror-like luster and dense, prismatic crystals; localities Panasqueira, Xuebaoding, Viloco; value hinges on finish, size, and matrix. - [Cassiterite from Viloco Mine, Bolivia](https://earthwonders.com/guides/cassiterite_from_viloco-mine_bolivia_284373): Viloco Mine cassiterite — Bolivia’s essential tin locality, known for dark, mirror-bright crystals and rare transparent, facet-quality specimens. - [Cassiterite from Erongo Mountains, Namibia](https://earthwonders.com/guides/cassiterite_from_erongo-mountains_namibia_78994): Cassiterite from the Erongo Mountains, Namibia — sharp, lustrous, twinned black crystals; scarce matrix pieces; prized for its Namibian mining history. - [Cassiterite from Panasqueira Mines, Portugal](https://earthwonders.com/guides/cassiterite_from_panasqueira-mines_portugal_192203): Panasqueira Mines, Portugal — Cassiterite, a classic European W-Sn-Cu locality; jet-black, sharp crystals with luster, often with muscovite and quartz. - [Castelo, Brazil Locality Guide](https://earthwonders.com/guides/castelo_brazil_44036): Castelo, Brazil — pegmatite locality yielding blue to blue-green fluorite, etched topaz, chrysoberyl, and quartz; prized for cabinet-quality color and matrix. - [Catfish No. 4 Occurrence, USA Locality Guide](https://earthwonders.com/guides/catfish-no-4-occurrence_usa_44395): Catfish No. 4 Occurrence, Utah — a sediment-hosted locality yielding copper sulfide, native copper, cassiterite, and quartz; prized for compact ore fabrics. - [Cavansite from Wagholi Quarries, Pune District, India](https://earthwonders.com/guides/cavansite_from_wagholi-quarries_india_286150): Wagholi cavansite - electric blue spheres and rosettes from Wagholi Quarries, Pune District, India; prized for vivid color and world-class collecting appeal. - [Cavansite](https://earthwonders.com/guides/cavansite): Cavansite - vivid royal-blue rosettes of hydrated calcium vanadyl silicate; prized for striking color, delicate blade formations, and limited Indian and Oregon… - [Cave-in-Rock, USA Locality Guide](https://earthwonders.com/guides/cave-in-rock_usa_44670): Cave-in-Rock, Illinois — premier fluorite locality in the Illinois-Kentucky Fluorspar District, famed for lustrous zoned cubic crystals and Minerva No. 1 herit… - [Cavnic Mine, Romania Locality Guide](https://earthwonders.com/guides/cavnic-mine_romania_44801): Cavnic Mine, Romania - classic Transylvanian locality known for cabinet-quality sulfides and carbonates, including tetrahedrite, rhodochrosite, fluorite. - [Cavnic, Romania Locality Guide](https://earthwonders.com/guides/cavnic_romania_44800): Cavnic, Romania — storied European locality for rhodochrosite and varied parageneses (chalcopyrite on sphalerite, baryte, quartz), highly valued by collectors. - [Cavradi gorge, Switzerland Locality Guide](https://earthwonders.com/guides/cavradi-gorge_switzerland_44808): A collector's guide to Cavradi gorge, Switzerland: its geology, mining history and notable minerals, illustrated with the 135 specimens documented from this locality on EarthWonders. - [Centennial Eureka Mine, USA Locality Guide](https://earthwonders.com/guides/centennial-eureka-mine_usa_45391): Centennial Eureka Mine, USA — a classic Tintic locality known for olive-green olivenite, malachite, rare tellurites, and micromounts; prized oxidized dumps. - [Centennial Mine, USA Locality Guide](https://earthwonders.com/guides/centennial-mine_usa_45397): A collector's guide to Centennial Mine, USA: its geology, mining history and notable minerals, illustrated with the 29 specimens documented from this locality on EarthWonders. - [Central Bohemian Region, Czech Republic Locality Guide](https://earthwonders.com/guides/central-bohemian-region_czech-republic_45496): A collector's guide to Central Bohemian Region, Czech Republic: its geology, mining history and notable minerals, illustrated with the 186 specimens documented from this locality on EarthWonders. - [Central Mine, USA Locality Guide](https://earthwonders.com/guides/central-mine_usa_45591): Central Mine, USA locality - classic Keweenaw native copper site with sharp crystals, copper on calcite, arborescent masses, and mining heritage for collectors. - [Central Mine, USA Locality Guide](https://earthwonders.com/guides/central-mine_usa_45596): A collector's guide to Central Mine, USA: its geology, mining history and notable minerals, illustrated with the 46 specimens documented from this locality on EarthWonders. - [Central Mine, USA Locality Guide](https://earthwonders.com/guides/central-mine_usa_573155): A collector's guide to Central Mine, USA: its geology, mining history and notable minerals, illustrated with the 62 specimens documented from this locality on EarthWonders. - [Central St Gotthard Massif, Switzerland Locality Guide](https://earthwonders.com/guides/central-st-gotthard-massif_switzerland_45689): Central St Gotthard Massif, Switzerland — Alpine locality famed for smoky quartz, rock crystal, adularia, and iron-rose hematite rosettes, a collector classic. - [Cerro de Pasco, Peru Locality Guide](https://earthwonders.com/guides/cerro-de-pasco_peru_46077): Cerro de Pasco, Peru — a renowned Cordilleran polymetallic locality famed for green fluorite, pyrite, sphalerite, and rare sulfosalts, prized by collectors. - [Cerro de Potosí, Bolivia Locality Guide](https://earthwonders.com/guides/cerro-de-potos_bolivia_46080): Cerro de Potosí, Bolivia — historic silver-tin locality famed for polymetallic sulfides and especially phosphophyllite crystals, a standout for collectors. - [Cerro Huañaquina, Bolivia Locality Guide](https://earthwonders.com/guides/cerro-huaaquina_bolivia_46116): Cerro Huañaquina, Bolivia — a magnetite locality near Potosí yielding sharp black octahedra on volcanic matrix, with rare hydroxylapatite and hematite dusting. - [Cerro Warihuyn, Peru Locality Guide](https://earthwonders.com/guides/cerro-warihuyn_peru_46257): A collector's guide to Cerro Warihuyn, Peru: its geology, mining history and notable minerals, illustrated with the 47 specimens documented from this locality on EarthWonders. - [Cerussite from Touissit, Morocco](https://earthwonders.com/guides/cerussite_from_touissit_morocco_259220): Cerussite from Touissit, Morocco: glassy PbCO3 crystals with sharp V-twins and smoky amber colors; a standout for appearance, locality, and collector value. - [Cerussite from Ojuela Mine, Mexico](https://earthwonders.com/guides/cerussite_from_ojuela-mine_mexico_186119): Cerussite from Ojuela Mine, Mexico - sharp, lustrous translucent to white crystals; prized for reticulated and snowflake twins on contrasting oxidized matrix. - [Cerussite from Mibladen, Morocco](https://earthwonders.com/guides/cerussite_from_mibladen-mining-district_morocco_163618): Cerussite from Mibladen, Morocco: glassy PbCO3 crystals in colorless to honey-yellow hues, often with baryte and galena on matrix; UV and collectors' allure. - [Cerussite from Broken Hill, Australia](https://earthwonders.com/guides/cerussite_from_broken-hill_australia_34725): Broken Hill cerussite: iconic white-ivory crystals from Australia’s classic Pb-Zn-Ag deposit; prized for old-time form, locality pedigree, and intact survival. - [Cerussite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/cerussite_from_tsumeb_namibia_261664): Cerussite from Tsumeb - glassy, architectural crystals with snowflake and honeycomb forms, superb transparency and quality from a famed ore deposit. - [Cerussite from Daoping Mine, China](https://earthwonders.com/guides/cerussite_from_daoping-mine_china_63946): Cerussite from Daoping Mine, China - yellow to straw-yellow crystals with pale green coatings, prized for luster, color, and its pyromorphite associations. - [Cerussite](https://earthwonders.com/guides/cerussite): Cerussite - lead carbonate famed for adamantine luster, dramatic V-twins and snowflake reticulations; prized from Tsumeb, Mibladen and Ojuela. - [Chabazite from Upper New Street Quarry, New Jersey, USA](https://earthwonders.com/guides/chabazite_from_upper-new-street-quarry_usa_278106): Chabazite from Upper New Street Quarry, New Jersey — a Paterson classic zeolite with pearly rhombs on basalt, peach-to-salmon color, and collecting appeal. - [Chabazite](https://earthwonders.com/guides/chabazite): Chabazite - sharp rhombohedra with luster in colors from colorless to brick red; forms in volcanic vesicles and attracts collectors for geometry. - [Chagai District, Pakistan Locality Guide](https://earthwonders.com/guides/chagai-district_pakistan_46527): Chagai District, Pakistan - Taftan brookite-quartz specimens prized by collectors for crisp, delicate TiO2 blades with rutile and the locality rarity. - [Chalcedony from Maharashtra, India](https://earthwonders.com/guides/chalcedony_from_maharashtra_india_154119): Chalcedony from Maharashtra — basalt-filled cavities yield botryoidal skins, agate bands, and blue-gray crusts; prized for Deccan origin and collector appeal. - [Chalcedony](https://earthwonders.com/guides/chalcedony): Chalcedony: microcrystalline quartz with agate, jasper, chrysoprase; waxy to glassy surfaces, banding and botryoidal forms, a colorful, collectible spectrum. - [Chalcedony from Mamuju Regency, Indonesia](https://earthwonders.com/guides/chalcedony_from_mamuju-regency_indonesia_155513): Mamuju Regency, Indonesia — site of grape agate chalcedony, lavender to violet botryoidal spheres that are amethystine quartz, famed among collectors. - [Chalcedony from Rio Grande do Sul, Brazil](https://earthwonders.com/guides/chalcedony_from_rio-grande-do-sul_brazil_214176): Chalcedony — Rio Grande do Sul: banded agate and amethyst geodes from Salto do Jacuí and Ametista do Sul; prized for color, scale, and volcanic context. - [Chalcocite](https://earthwonders.com/guides/chalcocite): Chalcocite: dark steel-gray crystals with bright metallic luster and dramatic twinning; rare, well-formed specimens attract collectors and highlight sites. - [Chalcocite from Bristol Copper Mine, Connecticut, USA](https://earthwonders.com/guides/chalcocite_from_bristol-copper-mine_usa_34467): Chalcocite from Bristol Copper Mine, Connecticut — dark, tabular crystals on calcite; historic locality valued by collectors for its classic ore-crystal form. - [Chalcocite from Butte Mining District, Montana, USA](https://earthwonders.com/guides/chalcocite_from_butte-mining-district_usa_38464): Chalcocite from Butte Mining District, Montana: steel-gray to blue-black blades, stacked pseudomorphs after covellite, rich paragenesis, and collector appeal. - [Chalcocite from Dzhezkazgan mining district, Kazakhstan](https://earthwonders.com/guides/chalcocite_from_dzhezkazgan-mining-district_kazakhstan_73046): Chalcocite from Dzhezkazgan, Kazakhstan — steel-gray to black crystals with metallic luster and geometric form; highly valued by collectors for rarity and disp… - [Chalcocite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/chalcocite_from_tsumeb_namibia_261664): Chalcocite - gunmetal-gray crystals with bright faces, striations, and twinning; rare, well-formed Tsumeb specimens prized for precision metallic luster. - [Chalcopyrite from Madan Ore Field, Bulgaria](https://earthwonders.com/guides/chalcopyrite_from_madan-ore-field_bulgaria_153449): Chalcopyrite from Madan Ore Field, Bulgaria; renowned European sulfide specimens with brassy crystals amid black sphalerite and galena, prized for contrast. - [Chalcopyrite from Tonglushan Mine, China](https://earthwonders.com/guides/chalcopyrite_from_tonglushan-mine_china_258452): Tonglushan chalcopyrite, Daye, China — brassy crystals and iridescent blister copper spheres; a skarn locality prized by collectors for rarity and context. - [Chalcopyrite](https://earthwonders.com/guides/chalcopyrite): Chalcopyrite: brassy-gold, metallic crystals with disphenoid forms and rainbow tarnish; prized for luster, contrast, and localities like Dalnegorsk. - [Chalcopyrite from Dalnegorsk, Russia](https://earthwonders.com/guides/chalcopyrite_from_dalnegorsk_russia_63378): Chalcopyrite from Dalnegorsk, Russia — pseudotetrahedral crystals with complex twinning, striking contrast with sphalerite and galena, prized by collectors. - [Chamonix, France Locality Guide](https://earthwonders.com/guides/chamonix_france_46979): Chamonix, France — Alpine-cleft locality famed for smoky quartz and fluorite in granite fissures; prized by collectors for tension-grown crystals and allure. - [Champion Mine, null Locality Guide](https://earthwonders.com/guides/champion-mine_null_573290): A collector's guide to Champion Mine, null: its geology, mining history and notable minerals, illustrated with the 88 specimens documented from this locality on EarthWonders. - [Champion Mine, USA Locality Guide](https://earthwonders.com/guides/champion-mine_usa_47140): Champion Mine, USA — Mono County, California: famed for andalusite-rich quartz with rutile crystals and rare phosphate minerals, a site prized by collectors. - [Chañarcillo Mining District, Chile Locality Guide](https://earthwonders.com/guides/chaarcillo-mining-district_chile_47250): Chañarcillo Mining District, Chile - renowned for high-grade silver minerals at specimen quality, especially proustite on calcite, plus native silver and sulfi… - [Charcas, Mexico Locality Guide](https://earthwonders.com/guides/charcas_mexico_47694): Charcas, Mexico — premier locality yielding danburite, calcite, datolite and more; architectural crystals and borates make it highly prized by collectors. - [Chelyabinsk Oblast, Russia Locality Guide](https://earthwonders.com/guides/chelyabinsk-oblast_russia_48704): A collector's guide to Chelyabinsk Oblast, Russia: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Chenzhou, China Locality Guide](https://earthwonders.com/guides/chenzhou_china_48833): A collector's guide to Chenzhou, China: its geology, mining history and notable minerals, illustrated with the 61 specimens documented from this locality on EarthWonders. - [Chesapeake Bay, null Locality Guide](https://earthwonders.com/guides/chesapeake-bay_null_573252): A collector's guide to Chesapeake Bay, null: its geology, mining history and notable minerals, illustrated with the 78 specimens documented from this locality on EarthWonders. - [Chessy, France Locality Guide](https://earthwonders.com/guides/chessy_france_49106): A collector's guide to Chessy, France: its geology, mining history and notable minerals, illustrated with the 146 specimens documented from this locality on EarthWonders. - [Chhappu, Pakistan Locality Guide](https://earthwonders.com/guides/chhappu_pakistan_49312): Chhappu, Pakistan — Braldu Valley pegmatite locality notable for lithium minerals and rare tourmaline–viitaniemiite associations, yielding elbaite and pollucit… - [Chibougamau, Canada Locality Guide](https://earthwonders.com/guides/chibougamau_canada_49382): Chibougamau, Canada - cubanite locality famed for Henderson No. 2, with brassy, razor-edged crystals on calcite; prized for display quality and rarity. - [Chifeng City, China Locality Guide](https://earthwonders.com/guides/chifeng-city_china_49608): Chifeng City, China — a premier locality for Huanggang skarn, magnetite-cassiterite ores, and a diverse mix of fluorite, ilvaite, arsenopyrite, and calcite pri… - [Chihuahua, Mexico Locality Guide](https://earthwonders.com/guides/chihuahua_mexico_49620): Chihuahua, Mexico — a mineral province famed for agate belts, carbonate-replacement deposits, and notable meteorite finds; prized for calcite, mimetite, wulfen… - [Chile Locality Guide](https://earthwonders.com/guides/chile_34): Chile locality guide: copper districts with atacamite, chrysocolla, malachite; Chañarcillo sulfosalts; and rare nitrate minerals prized by collectors. - [Chimney Rock Quarry, USA Locality Guide](https://earthwonders.com/guides/chimney-rock-quarry_usa_49807): Chimney Rock Quarry, USA - premier collector locality in the southern Watchung belt, yielding native copper, chalcocite, natrolite and zeolite-calcite suites. - [China Locality Guide](https://earthwonders.com/guides/china_35): China Locality Guide — a mineral province yielding blue/purple fluorite, stibnite, scheelite, and hemimorphite; prized for by-product crystals and pockets. - [Chino Mine, USA Locality Guide](https://earthwonders.com/guides/chino-mine_usa_49926): A collector's guide to Chino Mine, USA: its geology, mining history and notable minerals, illustrated with the 158 specimens documented from this locality on EarthWonders. - [Chiredzi District, Zimbabwe Locality Guide](https://earthwonders.com/guides/chiredzi-district_zimbabwe_50029): Chiredzi District, Zimbabwe — sculptural smoky-quartz amethyst scepters; clear, milky, smoky, and amethyst varieties with red hematite inclusions, prized by co… - [Chispas Mine, Mexico Locality Guide](https://earthwonders.com/guides/chispas-mine_mexico_50095): Chispas Mine, Mexico — Sonora silver-specimen locality famed for bonanza pockets of acanthite, pyrargyrite, stephanite and polybasite; prized by collectors. - [Chiurucu Mine, Peru Locality Guide](https://earthwonders.com/guides/chiurucu-mine_peru_50147): Chiurucu Mine, Peru - a premier collector locality for rose-pink rhodonite blades, often rosettes with quartz, sphalerite, and calcite in skarn deposits. - [Chivor Mine, Colombia Locality Guide](https://earthwonders.com/guides/chivor-mine_colombia_50174): Chivor Mine, Colombia - famed emerald locality yielding bluish-green beryl in veins with pyrite and calcite; significant, well-documented for collectors. - [Chlorite from Panasqueira Mines, Portugal](https://earthwonders.com/guides/chlorite_from_panasqueira-mines_portugal_192203): Chlorite from the Panasqueira Mines is not the mineral that first stops a collector at the case—at Panasqueira that role usually belongs to fluorapatite, ferberite, arsenopyrite, quartz, muscovite, si... - [Chlorite](https://earthwonders.com/guides/chlorite): Chlorite - soft micaceous silicates with rich green color, velvety rosettes and phantom quartz inclusions, alpine habits, and affordable, striking specimens. - [Choix, Mexico Locality Guide](https://earthwonders.com/guides/choix_mexico_50368): Choix, Mexico — renowned for El Refugio mine's botryoidal smithsonite color spectra, pastel hues, silky luster, and its status as a premier collecting locality. - [Christiana Mine, Greece Locality Guide](https://earthwonders.com/guides/christiana-mine_greece_50606): Christiana Mine, Greece — Lavrion's famed locality yielding azurite on gossan, malachite fibers, zinc- and copper-arsenates; prized for jewel-like secondary sp… - [Christmas Mine, USA Locality Guide](https://earthwonders.com/guides/christmas-mine_usa_50692): A collector's guide to Christmas Mine, USA: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [Christoph Mine, Namibia Locality Guide](https://earthwonders.com/guides/christoph-mine_namibia_573299): Christoph Mine, Namibia — renowned for elongated blue-green dioptase crystals; remote copper-silicate locality with rare mottramite coatings, prized by collect… - [Chrysoberyl from Itaguaçu, Espírito Santo, Brazil](https://earthwonders.com/guides/chrysoberyl_from_itaguau_brazil_119538): Itaguaçu, Espírito Santo – Chrysoberyl known for sixlings and cyclic twinning, yellow-green to greenish hues, with alexandrite and cat’s-eye forms prized by co… - [Chrysoberyl](https://earthwonders.com/guides/chrysoberyl): Chrysoberyl: sharp twinned crystals, alexandrite color change, and cat’s-eye chatoyancy; prized by collectors with notable localities in Espírito Santo, Brazil. - [Chrysocolla from Tenke-Fungurume Area, DR Congo](https://earthwonders.com/guides/chrysocolla_from_tenke-fungurume-area_dr-congo_254342): Chrysocolla from the Tenke-Fungurume area belongs to one of the most important modern copper-cobalt districts on Earth, and the best collector pieces show that pedigree immediately: saturated sky-blue... - [Chrysocolla from Ray Mine, Arizona, USA](https://earthwonders.com/guides/chrysocolla_from_ray-mine_usa_209997): Chrysocolla from Ray Mine, Arizona — saturated blue-green color, textures like drusy quartz and botryoidal seams, with Ray District appeal for collectors. - [Chrysocolla from Bagdad Mine, Arizona, USA](https://earthwonders.com/guides/chrysocolla_from_bagdad-mine_usa_15217): Chrysocolla from the Bagdad Mine belongs to the broad Arizona copper-oxide tradition, but the best pieces have a look of their own: robin’s-egg blue to greenish-blue botryoidal masses and coatings, co... - [Chrysocolla from Inspiration Mine Area, Arizona, USA](https://earthwonders.com/guides/chrysocolla_from_inspiration-mine-area_usa_117962): Chrysocolla from Inspiration Mine Area, Arizona — blue-to-blue-green copper silicate often with quartz or malachite, prized for this historic mining locality. - [Chrysocolla](https://earthwonders.com/guides/chrysocolla): Chrysocolla - sky-blue to teal-green copper silicate; botryoidal coatings and stalactites, often with quartz drusy, valued for color and locality; ID tips. - [Chrysocolla from Morenci Mine, Arizona, USA](https://earthwonders.com/guides/chrysocolla_from_morenci-mine_usa_170463): Chrysocolla from Morenci Mine, Arizona: renowned for blue botryoids and copper-oxide matrices; prized by collectors for provenance and vivid color. - [Chumar Bakhoor, Pakistan Locality Guide](https://earthwonders.com/guides/chumar-bakhoor_pakistan_50993): A collector's guide to Chumar Bakhoor, Pakistan: its geology, mining history and notable minerals, illustrated with the 297 specimens documented from this locality on EarthWonders. - [Chuquicamata Mine, Chile Locality Guide](https://earthwonders.com/guides/chuquicamata-mine_chile_51047): A collector's guide to Chuquicamata Mine, Chile: its geology, mining history and notable minerals, illustrated with the 33 specimens documented from this locality on EarthWonders. - [Cianciana, Italy Locality Guide](https://earthwonders.com/guides/cianciana_italy_51193): Cianciana, Sicily — historic sulfur locality producing native S8 crystals on aragonite, gypsum, and calcite; prized for color contrast and evaporite context. - [Cinnabar from Tongren Mine, Guizhou, China](https://earthwonders.com/guides/cinnabar_from_tongren-mine_china_258465): Cinnabar from Tongren Mine, Guizhou — sharp, lustrous HgS crystals in cherry-red to blood-red tones; backlit interiors glow; contrast on dolomite or quartz. - [Cinnabar](https://earthwonders.com/guides/cinnabar): Cinnabar - vivid scarlet crystals with adamantine luster; brittle yet prized, often on white carbonate, from historic mines and modern Chinese localities. - [Cinnabar from Almadén Mine, Ciudad Real, Spain](https://earthwonders.com/guides/cinnabar_from_almadn-mine_spain_5196): Almadén cinnabar - iconic mercury ore from Spain’s Almadén Mine; deep red crystals, historic locality, and strong collecting appeal. - [Ciudad Real, Spain Locality Guide](https://earthwonders.com/guides/ciudad-real_spain_51850): Ciudad Real, Spain - Almadén mercury district yields cinnabar-rich specimens with dense red crystals, native mercury, and rare Hg sulfides, prized by collector… - [Clara Mine, Germany Locality Guide](https://earthwonders.com/guides/clara-mine_germany_52022): Clara Mine, Germany — Black Forest locality producing baryte and fluorite, renowned for rich mineral diversity and key type-localities like claraite. - [Clausthal-Zellerfeld, Germany Locality Guide](https://earthwonders.com/guides/clausthal-zellerfeld_germany_52304): A collector's guide to Clausthal-Zellerfeld, Germany: its geology, mining history and notable minerals, illustrated with the 39 specimens documented from this locality on EarthWonders. - [Clay Canyon Mine, USA Locality Guide](https://earthwonders.com/guides/clay-canyon-mine_usa_52340): Clay Canyon Mine, USA: Utah locality famed for variscite nodules (Little Green Monster) and as type locality for wardite, millisite, montgomeryite—historic pho… - [Clay Canyon, USA Locality Guide](https://earthwonders.com/guides/clay-canyon_usa_52338): Clay Canyon, USA - famed variscite nodules and rare hydrous phosphates (wardite, millisite, montgomeryite); a classic, collectible phosphate locality. - [Clay Center, USA Locality Guide](https://earthwonders.com/guides/clay-center_usa_569160): Clay Center, Ohio - renowned for brown to amber root beer fluorite with celestine and calcite; glassy, color-zoned crystals, UV fluorescence, and a storied col… - [Clear Springs Mine, null Locality Guide](https://earthwonders.com/guides/clear-springs-mine_null_573284): Clear Springs Mine, Florida - Bone Valley locality famed for gemmy blue-green vivianite crystals on carbonate-phosphate matrix, prized by collectors. - [Cleator Moor, UK Locality Guide](https://earthwonders.com/guides/cleator-moor_uk_52665): Cleator Moor, UK, a West Cumberland iron-field locality famed for reniform hematite and bright platy specularite, plus quartz habits prized by collectors. - [Cliff mine, USA Locality Guide](https://earthwonders.com/guides/cliff-mine_usa_52900): Cliff Mine, USA - historic Keweenaw native-copper producer, yielding sculptural copper crystals, prehnite veins, and documented provenance prized by collectors. - [Climax Mine, USA Locality Guide](https://earthwonders.com/guides/climax-mine_usa_53005): Climax Mine, USA — Colorado locality famed for pyrite cubes, rhodochrosite on quartz, and fluorite; prized by collectors for distinctive cabinet specimens. - [Clinochlore from Korshunovskoye iron deposit](https://earthwonders.com/guides/clinochlore_from_korshunovskoye-iron-deposit_russia_132715): Seraphinite - a green clinochlore variety prized for chatoyant featherlike optics, silvery shimmer, and cabochon lapidary use from Korshunovskoe deposit. - [Coahuila, Mexico Locality Guide](https://earthwonders.com/guides/coahuila_mexico_53389): Coahuila, Mexico: a sulfate–fluorite belt famous for lilac fluorite on white celestine from Tule, plus blue celestine and rosolite; prized by collectors. - [Cobalt](https://earthwonders.com/guides/cobalt): Cobalt - native metal prized for rarity and steel-gray luster, with bold contrasts to erythrite or calcite; Bou Azzer and Schneeberg stand out. - [Cobalt area, null Locality Guide](https://earthwonders.com/guides/cobalt-area_null_573315): Cobalt area, Ontario - a premier native-silver locality noted for heavy silver plates, cobalt-nickel arsenides, and dramatic intergrowths prized by collectors. - [Cobalt, USA Locality Guide](https://earthwonders.com/guides/cobalt_usa_53551): A collector's guide to Cobalt, USA: its geology, mining history and notable minerals, illustrated with the 32 specimens documented from this locality on EarthWonders. - [Cochise County, USA Locality Guide](https://earthwonders.com/guides/cochise-county_usa_53727): Cochise County, USA — premier mineral locality with Bisbee copper minerals, azurite and malachite, Tombstone silver-lead-manganese ores, and Turquoise District… - [Cocineras Mine, Mexico Locality Guide](https://earthwonders.com/guides/cocineras-mine_mexico_53773): Cocineras Mine, Mexico, Santa Eulalia district’s classic cinnabar locality, yielding vivid scarlet cinnabar on gypsum with small crystals prized by collectors. - [Coldstones Quarry, UK Locality Guide](https://earthwonders.com/guides/coldstones-quarry_uk_54200): A collector's guide to Coldstones Quarry, UK: its geology, mining history and notable minerals, illustrated with the 68 specimens documented from this locality on EarthWonders. - [Cole Mine, USA Locality Guide](https://earthwonders.com/guides/cole-mine_usa_54291): A collector's guide to Cole Mine, USA: its geology, mining history and notable minerals, illustrated with the 48 specimens documented from this locality on EarthWonders. - [Colombia Locality Guide](https://earthwonders.com/guides/colombia_36): Colombia emerald localities — famed belts like Muzo, Coscuez, Chivor yield rich green crystals set in calcite and shale; prized for color, geology, history. - [Colorado Quartz mine, USA Locality Guide](https://earthwonders.com/guides/colorado-quartz-mine_usa_573303): Colorado Quartz Mine, USA - premier locality for sculptural native gold in quartz, prized for high luster, crystal form, and 3D specimens. - [Colorado, USA Locality Guide](https://earthwonders.com/guides/colorado_usa_54720): A collector's guide to Colorado, USA: its geology, mining history and notable minerals, illustrated with the 294 specimens documented from this locality on EarthWonders. - [Colquechaca, Bolivia Locality Guide](https://earthwonders.com/guides/colquechaca_bolivia_54850): Colquechaca, Bolivia, a classic silver-sulfosalt locality with dark red pyrargyrite, native silver, and rare Ag-Sn/Ag-Sb minerals prized by collectors. - [Comanche Grasslands, USA Locality Guide](https://earthwonders.com/guides/comanche-grasslands_usa_55108): Comanche Grasslands, USA — renowned for gemmy barite in large septarian concretions with calcite, offering crystals and classic eastern Colorado shale appeal. - [Commodore Mine, USA Locality Guide](https://earthwonders.com/guides/commodore-mine_usa_55370): Commodore Mine, Colorado — Creede locality yielding shiny sphalerite, galena, chalcopyrite, and amethystine quartz; prized for epithermal vein specimens. - [Concepción del Oro, Mexico Locality Guide](https://earthwonders.com/guides/concepcin-del-oro_mexico_55580): Concepción del Oro, Mexico — copper district in Zacatecas yielding vivid azurite and malachite, quartz-lined vugs and pyrite; prized locality for collectors. - [Connecticut, USA Locality Guide](https://earthwonders.com/guides/connecticut_usa_56008): Connecticut, USA Locality Guide: dense historic localities yield prehnite, datolite, calcite, barite, and pegmatite minerals; prized for legacy and diversity. - [Conselheiro Lafaiete, Brazil Locality Guide](https://earthwonders.com/guides/conselheiro-lafaiete_brazil_56110): Conselheiro Lafaiete, Brazil — Morro da Mina manganese deposit yields intensely colored rhodonite crystals and serves as a key collector reference locality. - [Conselheiro Pena, Brazil Locality Guide](https://earthwonders.com/guides/conselheiro-pena_brazil_56112): Conselheiro Pena, Brazil — a renowned Rio Doce pegmatite locality producing brazilianite, tourmaline, morganite, apatite, and vivid albite/muscovite specimens. - [Conway, USA Locality Guide](https://earthwonders.com/guides/conway_usa_56478): Conway, USA - A premier New Hampshire locality for miarolitic granite, yielding smoky quartz, microcline, fluorite, topaz, and arfvedsonite crystals prized by… - [Copper from Coro Coro, Bolivia](https://earthwonders.com/guides/copper_from_coro-coro_bolivia_58212): Coro Coro, Bolivia - native copper pseudomorphs after aragonite, crisp pseudohexagonal forms, warm patina, and highly collectible, scarce pieces. - [Copper from Bisbee, Arizona, USA](https://earthwonders.com/guides/copper_from_bisbee_usa_25644): Bisbee copper, Arizona — arborescent native copper with cuprite and malachite patina from the Warren district; prized for provenance, crystal form, and oxidize… - [Copper from Morenci, Arizona, USA](https://earthwonders.com/guides/copper_from_morenci_usa_170461): Morenci copper, Arizona — native copper from a porphyry district; oxidized-zone specimens with cuprite, malachite, chrysocolla, and sculptural growths. - [Copper](https://earthwonders.com/guides/copper): Copper: native copper with spinel-twinned crystals and arborescences; notable from Lake Superior, Itauz, Dongchuan, Corocoro, prized for color and localities. - [Copper from Keweenaw Peninsula, Michigan, USA](https://earthwonders.com/guides/copper_from_keweenaw-peninsula_usa_128808): Keweenaw Peninsula copper - classic native copper from Michigan, famed for wiry arborescent sprays, sharp crystal faces, and historic mines prized by collector… - [Copper Falls Mine, USA Locality Guide](https://earthwonders.com/guides/copper-falls-mine_usa_57105): A collector's guide to Copper Falls Mine, USA: its geology, mining history and notable minerals, illustrated with the 106 specimens documented from this locality on EarthWonders. - [Copper Queen Mine, USA Locality Guide](https://earthwonders.com/guides/copper-queen-mine_usa_57619): Copper Queen Mine, USA — Bisbee’s iconic locality for azurite, malachite, cuprite, and native copper; historic specimens prized by collectors and museums. - [Copper Rose Mine, USA Locality Guide](https://earthwonders.com/guides/copper-rose-mine_usa_57692): Copper Rose Mine, USA — famed for copper rose crystals resembling azurite, with native copper in calcite, cuprite, and malachite; a collectible locality. - [Copper Stope, USA Locality Guide](https://earthwonders.com/guides/copper-stope_usa_57719): Copper Stope, USA, Gleeson, Arizona: a pocket locality yielding rosasite, smithsonite, hemimorphite, and malachite pseudomorphs, highly prized by collectors. - [Cornwall, UK Locality Guide](https://earthwonders.com/guides/cornwall_uk_58192): A collector's guide to Cornwall, UK: its geology, mining history and notable minerals, illustrated with the 101 specimens documented from this locality on EarthWonders. - [Coro Coro, Bolivia Locality Guide](https://earthwonders.com/guides/coro-coro_bolivia_58212): Coro Coro, Bolivia - classic locality for native copper pseudomorphs after aragonite; compact, heavy copper in salmon to mahogany red with cuprite shadows. - [Coronel Murta, Brazil Locality Guide](https://earthwonders.com/guides/coronel-murta_brazil_565166): A collector's guide to Coronel Murta, Brazil: its geology, mining history and notable minerals, illustrated with the 511 specimens documented from this locality on EarthWonders. - [Córrego Frio mine, Brazil Locality Guide](https://earthwonders.com/guides/crrego-frio-mine_brazil_58377): Córrego Frio, Brazil: a type locality for brazilianite, scorzalite, and souzalite, famed for yellow-green brazilianite crystals and classic pegmatite specimens. - [Corundum from Winza, Tanzania](https://earthwonders.com/guides/corundum_from_winza_tanzania_293740): Winza corundum, Tanzania: iconic ruby and sapphire locality famed for vivid color zoning, transparent red stones, and striking crystal forms for collectors. - [Corundum from Luc Yen Mine, Vietnam](https://earthwonders.com/guides/corundum_from_luc-yen-mine_vietnam_151936): Luc Yen corundum, Vietnam — marble-hosted rubies and sapphires with a well-documented modern pedigree, vibrant colors, and strong collector appeal. - [Corundum from Mogok Valley, Myanmar](https://earthwonders.com/guides/corundum_from_mogok-valley_myanmar_571970): Mogok Valley corundum — Burma’s premier ruby and sapphire locality, marble-hosted crystals with glow and strong locality character treasured by collectors. - [Corundum from Sri Lanka](https://earthwonders.com/guides/corundum_from_sri-lanka_167): Sri Lanka corundum — famed Ratnapura blue sapphires, padparadscha hues, and sharp crystals; prized for bright color, brilliance, and classic Ceylon provenance. - [Corundum from Jegdalek Ruby Deposit, Afghanistan](https://earthwonders.com/guides/corundum_from_jegdalek-ruby-deposit_afghanistan_121638): Jegdalek corundum, Afghanistan - marble-hosted ruby from an artisanal district, vivid red crystals on white marble, prized for color and locality history. - [Corundum from Taplejung District](https://earthwonders.com/guides/corundum_from_taplejung-district_nepal_568702): Comprehensive guide to corundum from Taplejung District - [Corundum](https://earthwonders.com/guides/corundum): Corundum: iconic mineral with ruby and sapphire varieties; Mohs 9, vivid colors, and sharp crystals; prized for color, form, and provenance. - [Corydon Stone Co. Quarry, USA Locality Guide](https://earthwonders.com/guides/corydon-stone-co-quarry_usa_58536): Corydon Stone Co. Quarry, USA — southern Indiana carbonate-vug locality known for pink dolomite, calcite, and purple fluorite cubes; historic, access limited. - [Coud'a workings, Morocco Locality Guide](https://earthwonders.com/guides/couda-workings_morocco_58929): A collector's guide to Coud'a workings, Morocco: its geology, mining history and notable minerals, illustrated with the 35 specimens documented from this locality on EarthWonders. - [County Durham, UK Locality Guide](https://earthwonders.com/guides/county-durham_uk_565126): A collector's guide to County Durham, UK: its geology, mining history and notable minerals, illustrated with the 36 specimens documented from this locality on EarthWonders. - [Covellite](https://earthwonders.com/guides/covellite): Covellite CuS shows an indigo-blue metallic sheen with thin platelike crystals and rosettes; rare on matrix and highly prized, especially from Butte. - [Covellite from Butte Mining District, USA](https://earthwonders.com/guides/covellite_from_butte-mining-district_usa_38464): Covellite from the Butte Mining District, USA - a classic copper-sulfide with gunmetal to electric indigo iridescence, hexagonal blades on matrix, highly prize… - [Cozzo Disi Mine, Italy Locality Guide](https://earthwonders.com/guides/cozzo-disi-mine_italy_573165): Cozzo Disi Mine, Italy — historic Sicilian sulfur locality famed for lemon-yellow dipyramidal sulfur on aragonite, a classic with high collector appeal. - [Creedite from Navidad Mine, Mexico](https://earthwonders.com/guides/creedite_from_navidad-mine_mexico_176791): Creedite from Navidad Mine, Mexico: orange radiating blades in complete floater clusters, formed in fluorite veins; a classic, highly collectible mineral. - [Creedite](https://earthwonders.com/guides/creedite): Creedite: delicate calcium aluminum sulfate fluoride forming radiating sprays and orange spheres on contrasting matrix; prized for fragility and Santa Eulalia. - [Creedite from Qinglong Mine, China](https://earthwonders.com/guides/creedite_from_qinglong-mine_china_206369): Creedite from Qinglong Mine, China: lavender prismatic sprays, high luster, rarity, and striking three-dimensional display that attracts collectors. - [Creedite from Santa Eulalia Mining District, Mexico](https://earthwonders.com/guides/creedite_from_santa-eulalia-mining-district_mexico_227363): Santa Eulalia Mining District, Mexico creedite crystals in purple hues amid gypsum and oxidized matrix, famed for large, sharp specimens and collector appeal. - [Cripple Creek, USA Locality Guide](https://earthwonders.com/guides/cripple-creek_usa_566450): Cripple Creek, USA - world-class locality for gold tellurides like calaverite and sylvanite, with bright metallic blades in quartz and historical specimens. - [Crocoite](https://earthwonders.com/guides/crocoite): Crocoite: vivid orange-red prismatic crystals with glassy luster from Dundas, Tasmania and the Urals, prized for dramatic color, rarity, and strong provenance. - [Crocoite from Adelaide Mine, Tasmania, Australia](https://earthwonders.com/guides/crocoite_from_adelaide-mine_australia_1655): Crocoite from the Adelaide Mine, Tasmania: orange-red to crimson needle crystals with gossan matrix, prized for collecting quality and rarity. - [Crocoite from Callenberg, Germany](https://earthwonders.com/guides/crocoite_from_callenberg_germany_570869): Callenberg crocoite — vivid orange-red crystals on pale matrix; a European classic prized for color, provenance, and compact display pieces. - [Cruzeiro mine, Brazil Locality Guide](https://earthwonders.com/guides/cruzeiro-mine_brazil_61348): Cruzeiro mine, Brazil — famed elbaitic tourmaline (verdelite, indicolite, rubellite) and rich pegmatite specimens, a cornerstone for serious collectors. - [Cryo-Genie Mine, USA Locality Guide](https://earthwonders.com/guides/cryo-genie-mine_usa_61381): A collector's guide to Cryo-Genie Mine, USA: its geology, mining history and notable minerals, illustrated with the 109 specimens documented from this locality on EarthWonders. - [Crystal Peak, USA Locality Guide](https://earthwonders.com/guides/crystal-peak_usa_61521): Crystal Peak, Colorado pegmatite locality famed for blue-green amazonite with smoky quartz, a historic collecting ground with benchmark pockets and key specime… - [Crystal Tips No. 1 pit, USA Locality Guide](https://earthwonders.com/guides/crystal-tips-no-1-pit_usa_61565): Crystal Tips No. 1 pit, USA, Petersen Mountain quartz locality renowned for amethyst, smoky quartz, and scepter quartz in sculptural pockets and overgrowths. - [Cumberland Co., Canada Locality Guide](https://earthwonders.com/guides/cumberland-co_canada_567723): Cumberland County, Nova Scotia — famed Wasson Bluff zeolites, especially salmon-orange chabazite on white heulandite; a premier locality prized by collectors. - [Cumberland Mine, USA Locality Guide](https://earthwonders.com/guides/cumberland-mine_usa_62017): Cumberland Mine, USA: a Middle Tennessee locality famed for amber calcite, purple fluorite, and sphalerite, with rare specimens prized by collectors. - [Cumbria, UK Locality Guide](https://earthwonders.com/guides/cumbria_uk_62047): A collector's guide to Cumbria, UK: its geology, mining history and notable minerals, illustrated with the 74 specimens documented from this locality on EarthWonders. - [Cuprite from Chessy copper mines, France](https://earthwonders.com/guides/cuprite_from_chessy-copper-mines_france_49108): Cuprite from Chessy copper mines, France — a European classic with sharp red octahedra often mantled by malachite and azurite, prized for provenance. - [Cuprite from Tsumeb, Namibia](https://earthwonders.com/guides/cuprite_from_tsumeb_namibia_261664): Tsumeb cuprite — Namibia's famed copper-lead-zinc-silver deposit yields wine-red to cherry-red crystals with brilliant luster, often on calcite or smithsonite. - [Cuprite from Milpillas Mine, Mexico](https://earthwonders.com/guides/cuprite_from_milpillas-mine_mexico_165066): Cuprite from Milpillas Mine, Mexico — sharp octahedral crystals, deep red translucency with metallic luster, contrasting pale matrix, prized by collectors. - [Cuprite from Onganja Mine, Namibia](https://earthwonders.com/guides/cuprite_from_onganja-mine_south-africa_187857): Cuprite from Onganja Mine, Namibia — large, sharp crystals with malachite skins and deep red interiors; a historic locality prized by collectors. - [Cuprite from Bisbee, Arizona, USA](https://earthwonders.com/guides/cuprite_from_bisbee_usa_25644): Cuprite, Bisbee, Arizona: classic old-ore cuprite with dense, lustrous crystals that flash red at edges; prized for locality history and crystal quality. - [Cuprite from Rubtsovsk Mine, Russia](https://earthwonders.com/guides/cuprite_from_rubtsovsk-mine_russia_218672): Cuprite from Rubtsovsk Mine, Russia — striking red-black octahedra on native copper with silver; a modern classic from a brief, collectible locality. - [Cuprite](https://earthwonders.com/guides/cuprite): Cuprite - ruby-red copper oxide crystals with brilliant luster, from cubes to octahedra, prized for color, rarity, and historic collecting appeal. - [Czar Mine, USA Locality Guide](https://earthwonders.com/guides/czar-mine_usa_62687): Czar Mine, USA — Bisbee-area locality famed for dark blue azurite and malachite on oxidized copper ore; rich old-time character and cabinet-quality specimens. - [Dalarna County, Sweden Locality Guide](https://earthwonders.com/guides/dalarna-county_sweden_63227): Dalarna County, Sweden - collector’s cross-section of Falun and Garpenberg with sulphide ores, magnetite–hematite–apatite iron ore, and hematite-included quart… - [Dalmellington Mine, UK Locality Guide](https://earthwonders.com/guides/dalmellington-mine_uk_63369): Dalmellington Mine, UK — Frizington baryte from the haematite system; glassy, prismatic crystals with honey-to-golden hues, scarce and prized by collectors. - [Dalnegorsk, Russia Locality Guide](https://earthwonders.com/guides/dalnegorsk_russia_63378): A collector's guide to Dalnegorsk, Russia: its geology, mining history and notable minerals, illustrated with the 424 specimens documented from this locality on EarthWonders. - [Danburite](https://earthwonders.com/guides/danburite): Danburite: colorless to pale straw-yellow crystals with brilliant vitreous luster and wedge terminations; UV fluorescence aids ID, prized for clarity and form. - [Danburite from Mogok Township, Myanmar](https://earthwonders.com/guides/danburite_from_mogok-township_myanmar_565981): Mogok Danburite, Myanmar — thumbnail-to-miniature, transparent to pale golden crystals with glassy luster; locality-specific provenance and sublocalities. - [Danburite from Charcas, San Luis Potosí, Mexico](https://earthwonders.com/guides/danburite_from_charcas_mexico_47694): Danburite from Charcas, San Luis Potosí, Mexico - glassy, large, chisel-terminated crystals with pale pink tones; Charcas locality prized by collectors. - [Daoping Mine, China Locality Guide](https://earthwonders.com/guides/daoping-mine_china_63946): Daoping Mine, Guangxi - a defining Chinese locality famed for vivid green pyromorphite crystals and notable cerussite, prized by collectors for color and form. - [Dara-e-Pech District, Afghanistan Locality Guide](https://earthwonders.com/guides/dara-e-pech-district_afghanistan_571122): A collector's guide to Dara-e-Pech District, Afghanistan: its geology, mining history and notable minerals, illustrated with the 431 specimens documented from this locality on EarthWonders. - [Dara-e-Pech pegmatite field, Afghanistan Locality Guide](https://earthwonders.com/guides/dara-e-pech-pegmatite-field_afghanistan_63990): A collector's guide to Dara-e-Pech pegmatite field, Afghanistan: its geology, mining history and notable minerals, illustrated with the 329 specimens documented from this locality on EarthWonders. - [Dar-e-Zu mine, Afghanistan Locality Guide](https://earthwonders.com/guides/dar-e-zu-mine_afghanistan_64051): Dar-e-Zu mine, Afghanistan — famed Badakhshan lapis lazuli locality with sharp lazurite in white marble and rare afghanite/sodalite finds for collectors. - [Dashkesan Co-Fe deposit, Azerbaijan Locality Guide](https://earthwonders.com/guides/dashkesan-co-fe-deposit_azerbaijan_64263): A collector's guide to Dashkesan Co-Fe deposit, Azerbaijan: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Dassu, Pakistan Locality Guide](https://earthwonders.com/guides/dassu_pakistan_64289): A collector's guide to Dassu, Pakistan: its geology, mining history and notable minerals, illustrated with the 268 specimens documented from this locality on EarthWonders. - [Datolite from Dalnegorsk Urban District, Russia](https://earthwonders.com/guides/datolite_from_dalnegorsk-urban-district_russia_63379): Dalnegorsk datolite is the collector’s datolite that changed the scale of the species. Before the Russian Far East opened more freely to Western collectors, the classic mental picture of datolite was... - [Datolite](https://earthwonders.com/guides/datolite): Datolite — calcium borosilicate with glassy crystals and Keweenaw nodules; forms in hydrothermal and skarn systems, prized for color variety and luster. - [Dattaw-taung, Myanmar Locality Guide](https://earthwonders.com/guides/dattaw-taung_myanmar_64328): Dattaw-taung, Myanmar — premier Mogok hard-rock ruby locality with red to pink corundum in marble, large crystals, and a complex mineral assemblage. - [Davib Ost Farm 61, Namibia Locality Guide](https://earthwonders.com/guides/davib-ost-farm-61_namibia_64440): Davib Ost Farm 61, Namibia - Erongo area famed for tin-tantalum pegmatites and lustrous schorl, green fluorite, and yellow muscovite, prized by collectors. - [Daye Co., China Locality Guide](https://earthwonders.com/guides/daye-co_china_64739): A collector's guide to Daye Co., China: its geology, mining history and notable minerals, illustrated with the 132 specimens documented from this locality on EarthWonders. - [De'an Co., China Locality Guide](https://earthwonders.com/guides/dean-co_china_64986): A collector's guide to De'an Co., China: its geology, mining history and notable minerals, illustrated with the 134 specimens documented from this locality on EarthWonders. - [Deer Trail Mine, USA Locality Guide](https://earthwonders.com/guides/deer-trail-mine_usa_65441): Deer Trail Mine, USA — classic Utah locality known for sea-green fluorite on quartz, with a broader mineral suite; prized by collectors for color and history. - [Defiance Mine, USA Locality Guide](https://earthwonders.com/guides/defiance-mine_usa_65483): Defiance Mine, USA: a renowned Arizona wulfenite locality famed for thin, lustrous butterscotch plates with calcite, prized by collectors for texture and color. - [Denny Mountain, USA Locality Guide](https://earthwonders.com/guides/denny-mountain_usa_66162): Denny Mountain, Washington — a classic specimen locality noted for quartz-rich skarns, raspberry amethyst scepters, doubles, and strong collector appeal. - [Denton Mine, USA Locality Guide](https://earthwonders.com/guides/denton-mine_usa_66188): A collector's guide to Denton Mine, USA: its geology, mining history and notable minerals, illustrated with the 573 specimens documented from this locality on EarthWonders. - [Deo Darrah, Afghanistan Locality Guide](https://earthwonders.com/guides/deo-darrah_afghanistan_66240): Deo Darrah, Afghanistan — remote pegmatite locality famed for blue beryl in compact, architectural crystals; prized for rarity, color, and appearance. - [Derbyshire, UK Locality Guide](https://earthwonders.com/guides/derbyshire_uk_66326): A collector's guide to Derbyshire, UK: its geology, mining history and notable minerals, illustrated with the 79 specimens documented from this locality on EarthWonders. - [Descloizite from Berg Aukas Mine, Namibia](https://earthwonders.com/guides/descloizite_from_berg-aukas-mine_namibia_22408): Berg Aukas descloizite is one of the great “species-defining” classics: the locality by which serious collectors judge descloizite. The best pieces have a sculptural, almost architectural presence—dar... - [Descloizite](https://earthwonders.com/guides/descloizite): Descloizite: lead-zinc vanadate with lustrous rosettes, black-to-brown tones, and warm translucence; top localities Otavi, Namibia and Ojuela, Mexico. - [Deshgaon, India Locality Guide](https://earthwonders.com/guides/deshgaon_india_66547): Deshgaon, India — rising Deccan zeolite locality producing orange-red spherical zeolites with white mesolite terminations, prized by collectors. - [Detroit City Mine, USA Locality Guide](https://earthwonders.com/guides/detroit-city-mine_usa_66636): Detroit City Mine, Colorado — noted rhodochrosite locality with cherry-red rhombohedra in a high-elevation vein; quartz, fluorite, and greisen-style assemblage… - [Deva, Romania Locality Guide](https://earthwonders.com/guides/deva_romania_66695): Deva, Romania locality guide: Sacaramb telluride locality famed for nagyagite and sylvanite, rhodochrosite, and a rich mining history treasured by collectors. - [Devilline from Spania Dolina, Slovakia](https://earthwonders.com/guides/devilline_from_spania-dolina_slovakia_243277): Comprehensive guide to devilline from Špania Dolina - [Diakon, Mali Locality Guide](https://earthwonders.com/guides/diakon_mali_67094): Diakon, Mali — a premier prehnite–epidote locality and source of Mali garnet, prized for sculptural prehnite on dark epidote and strong gem-trade relevance. - [Diamantina, Brazil Locality Guide](https://earthwonders.com/guides/diamantina_brazil_67108): Diamantina, Brazil — renowned locality producing detrital diamonds and quartz with rutile; prized for history, sharp crystals, and diverse suites. - [Diamond](https://earthwonders.com/guides/diamond): Diamond — the hardest mineral (Mohs 10) with octahedra, trigons, and cube forms; matrix and alluvial crystals prized for pristine appearance and provenance. - [Diamond from Mbuji-Mayi, DR Congo](https://earthwonders.com/guides/diamond_from_mbuji-mayi_dr-congo_571112): Mbuji-Mayi diamond — Congo cubes and modified cube crystals, formed in kimberlites with a mantle mineral suite; a crystallographic favorite prized for provenan… - [Diamond from Ekati Mine, Canada](https://earthwonders.com/guides/diamond_from_ekati-mine_canada_75626): Ekati Diamond Mine, Canada - Lac de Gras locality producing high-value rough diamonds; sharp octahedra, macles, and provenance-driven collector appeal. - [Diamond from Diamantina, Brazil](https://earthwonders.com/guides/diamond_from_diamantina_brazil_67108): Diamantina, Brazil — famed alluvial diamonds from Proterozoic conglomerates; rounded octahedra to rhombododecahedra and historic subdistricts that collectors s… - [Diamond from Diavik Mine, Canada](https://earthwonders.com/guides/diamond_from_diavik-mine_canada_67374): Diavik Mine, Canada — renowned diamond locality yielding natural rough with bright octahedra, etched surfaces, coatings, and macles, prized by collectors. - [Diamond Acres diggings, USA Locality Guide](https://earthwonders.com/guides/diamond-acres-diggings_usa_67119): A collector's guide to Diamond Acres diggings, USA: its geology, mining history and notable minerals, illustrated with the 30 specimens documented from this locality on EarthWonders. - [Diamond Hill Quartz Mine, USA Locality Guide](https://earthwonders.com/guides/diamond-hill-quartz-mine_usa_67181): A collector's guide to Diamond Hill Quartz Mine, USA: its geology, mining history and notable minerals, illustrated with the 25 specimens documented from this locality on EarthWonders. - [Diamond Willow Mine, Canada Locality Guide](https://earthwonders.com/guides/diamond-willow-mine_canada_67263): A collector's guide to Diamond Willow Mine, Canada: its geology, mining history and notable minerals, illustrated with the 63 specimens documented from this locality on EarthWonders. - [Diana Maria Mine, UK Locality Guide](https://earthwonders.com/guides/diana-maria-mine_uk_67272): Diana Maria Mine, UK — a key fluorite locality near Frosterley, Rogerley extension, known for gemmy green, purple, yellow fluorite on quartz and calcite. - [Diopside](https://earthwonders.com/guides/diopside): Diopside — classic clinopyroxene with prism crystals in chrome-green to violane violet, varied habits and marble localities prized by collectors. - [Diopside from Jeffrey Mine, Canada](https://earthwonders.com/guides/diopside_from_jeffrey-mine_canada_121627): Diopside from Jeffrey Mine, Quebec — green, needle-like and tabular crystals with garnet and vesuvianite; historic locality prized for texture and association. - [Diopside from Merelani Hills, Tanzania](https://earthwonders.com/guides/diopside_from_merelani-hills_tanzania_162307): Merelani Hills, Tanzania: Diopside prized for lime-green crystals, glassy clarity, and specimen contrast with graphite; a standout locality for collectors. - [Dioptase from Tsumeb, Namibia](https://earthwonders.com/guides/dioptase_from_tsumeb_namibia_261664): Dioptase, Tsumeb (Namibia): deep emerald-green crystals with bluish cast, glassy luster, sharp terminations on calcite, a collector’s prized, iconic locality. - [Dioptase from Altyn‑Tyube dioptase deposit, Kazakhstan](https://earthwonders.com/guides/dioptase_from_altyn-tyube-dioptase-deposit_kazakhstan_6097): Altyn-Tyube dioptase, Kazakhstan - the type locality famed for emerald-green crystals, intense glow, and copper-oxide associations prized by collectors. - [Dioptase from Christmas Mine, Arizona, USA](https://earthwonders.com/guides/dioptase_from_christmas-mine_usa_50692): Dioptase from Christmas Mine, Arizona — emerald-green microcrystals with calcite contrast; a classic copper locality prized for provenance and character. - [Dioptase](https://earthwonders.com/guides/dioptase): Dioptase: vivid emerald-green crystals with glassy luster, often on white calcite or quartz; highly collectible due to color, clarity, and brittleness. - [Dirtlow Rake, UK Locality Guide](https://earthwonders.com/guides/dirtlow-rake_uk_67999): Dirtlow Rake, UK - a defining Castleton–Bradwell vein locality, notable for calcite- and baryte-rich specimens with purple fluorite and replacement textures. - [Divino das Laranjeiras, Brazil Locality Guide](https://earthwonders.com/guides/divino-das-laranjeiras_brazil_68208): Divino das Laranjeiras, Brazil - renowned for rare phosphate minerals and the classic brazilianite from Córrego Frio, with sharp yellow-green crystals on albit… - [Dodoma Region, Tanzania Locality Guide](https://earthwonders.com/guides/dodoma-region_tanzania_68682): Dodoma Region, Tanzania - a cluster of metamorphic terrains producing Mautia Hill’s rare yoderite and amphibole–magnetite crystals, plus Winza rubies. - [Dodo Mine, Russia Locality Guide](https://earthwonders.com/guides/dodo-mine_russia_68684): Dodo Mine, Russia - Alpine-cleft quartz locality in the Subpolar Urals, yielding rock crystal, smoky quartz, axinite and titanite; prized by collectors. - [Dolomite from Tsumeb, Namibia](https://earthwonders.com/guides/dolomite_from_tsumeb_namibia_261664): Dolomite from Tsumeb, Namibia — a diverse carbonate with hollow casts, epimorphs, and color variety, prized for paragenesis, display, and collectibility. - [Dolomite](https://earthwonders.com/guides/dolomite): Dolomite - classic carbonate prized for sculptural rhombohedra, luster, and colors from snow-white to pink, including cobaltoan varieties; ideal for cabinets. - [Dolomite from Shangbao Mine, Hunan, China](https://earthwonders.com/guides/dolomite_from_shangbao-mine_china_233678): Shangbao Mine, Hunan, China — renowned for fluorite with pearly pink dolomite rhombs, plus quartz and pyrite; a prized collector locality. - [Dolomite from Elmwood Mine, Tennessee, USA](https://earthwonders.com/guides/dolomite_from_elmwood-mine_usa_76987): Dolomite from Elmwood Mine — pearly rhombs with drusy surfaces amid sphalerite and fluorite; Mississippi Valley-type formation, ideal for identification. - [Dolomite from Eugui, Spain](https://earthwonders.com/guides/dolomite_from_eugui_spain_80168): Eugui dolomite, Navarre, Spain - a world-class locality known for large, translucent rhombohedra with twinning and sculptural form collectors prize. - [Dongchuan District, China Locality Guide](https://earthwonders.com/guides/dongchuan-district_china_573154): Dongchuan District, China: a copper-rich locality renowned for electric-blue veszelyite on hemimorphite and quartz, prized as small vug specimens for collectors - [Dongposhan Mine, China Locality Guide](https://earthwonders.com/guides/dongposhan-mine_china_69588): Dongposhan Mine, China: Hunan locality famed for green-to-purple fluorite with calcite and quartz, distinct cube forms, and rich paragenesis for collectors. - [Drâa-Tafilalet Region, Morocco Locality Guide](https://earthwonders.com/guides/dra-tafilalet-region_morocco_70576): Drâa-Tafilalet Region, Morocco - a mineral province with diverse specimens: Mibladen red vanadinite, Imiter silver, Bou Azzer cobalt, and Oumjrane azurite. - [Dravite from Merelani Hills, Tanzania](https://earthwonders.com/guides/dravite_from_merelani-hills_tanzania_162307): Merelani Hills dravite, Tanzania, a magnesium-rich tourmaline famed for emerald-to-chrome green color, rarity, and fully terminated crystals prized by collecto… - [Dravite from Landanai, Tanzania](https://earthwonders.com/guides/dravite_from_landanai_tanzania_138117): Dravite — Landanai, Tanzania: vivid color zoning from brown-olive to bottle-green, sharp terminations and classic crystal habit prized by collectors. - [Dravite](https://earthwonders.com/guides/dravite): Dravite: sodium–magnesium tourmaline with sharp trigonal prisms and hues from honey-yellow to chrome-green; forms in metamorphic marbles and offers classic cry… - [DR Congo Locality Guide](https://earthwonders.com/guides/dr-congo_38): A collector's guide to DR Congo: its geology, mining history and notable minerals, illustrated with the 81 specimens documented from this locality on EarthWonders. - [Dreamtime claim, USA Locality Guide](https://earthwonders.com/guides/dreamtime-claim_usa_70758): A collector's guide to Dreamtime claim, USA: its geology, mining history and notable minerals, illustrated with the 76 specimens documented from this locality on EarthWonders. - [Dreislar Mine, Germany Locality Guide](https://earthwonders.com/guides/dreislar-mine_germany_70804): Dreislar Mine, Germany - a classic Sauerland baryte locality: white to salmon-pink bladed baryte with brassy pyrite and chalcopyrite, rare strontianite, prized… - [Droujba mine, Bulgaria Locality Guide](https://earthwonders.com/guides/droujba-mine_bulgaria_71506): Droujba mine, Bulgaria — a renowned Laki district locality famed for architectural calcite and quartz with rhombohedrons and pseudomorphs, prized by collectors. - [Dry Gill Mine, UK Locality Guide](https://earthwonders.com/guides/dry-gill-mine_uk_71692): Dry Gill Mine, UK - a renowned British locality for mimetite and campylite, with lustrous crystals on quartz and baryte; valued for sculptural form and color. - [Duftite](https://earthwonders.com/guides/duftite): Duftite - vivid green hues from velvety drusy to botryoidal forms; rare micromounts and classic localities like Tsumeb and Ojuela attract collectors. - [Duftite from Tsumeb, Namibia](https://earthwonders.com/guides/duftite_from_tsumeb_namibia_261664): Duftite from Tsumeb, Namibia - olive to bright-green arsenate, famed for texture and paragenesis; the type locality boosts its collecting appeal. - [Dundas Extended Mine, Australia Locality Guide](https://earthwonders.com/guides/dundas-extended-mine_australia_72308): A collector's guide to Dundas Extended Mine, Australia: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Dunton Gem Quarry, USA Locality Guide](https://earthwonders.com/guides/dunton-gem-quarry_usa_573130): Dunton Gem Quarry, Maine — a classic LCT pegmatite yielding watermelon tourmaline varieties and rare phosphates; a landmark locality for collectors. - [Duquesne-Washington Camp, USA Locality Guide](https://earthwonders.com/guides/duquesne-washington-camp_usa_72568): Duquesne-Washington Camp, USA - a classic Arizona locality known for quartz cavities and Japan-law twin crystals, with historic mining and strong collecting ap… - [Durango, Mexico Locality Guide](https://earthwonders.com/guides/durango_mexico_72603): Durango, Mexico — a diverse mineral province with Ojuela, Cerro de Mercado, and Navidad; famed for creedite, fluorapatite, fluorite, arsenates. - [Durham Co., Australia Locality Guide](https://earthwonders.com/guides/durham-co_australia_72673): A collector's guide to Durham Co., Australia: its geology, mining history and notable minerals, illustrated with the 52 specimens documented from this locality on EarthWonders. - [Durham, USA Locality Guide](https://earthwonders.com/guides/durham_usa_72666): A collector's guide to Durham, USA: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [Dyscrasite from Příbram, Czech Republic](https://earthwonders.com/guides/dyscrasite_from_pbram_czech-republic_203885): Dyscrasite from Příbram, Czech Republic - famed for long metallic Ag3Sb blades from compact uranium-base-metal veins; prized for sculptural crystals and notabl… - [Dyscrasite](https://earthwonders.com/guides/dyscrasite): Dyscrasite — silver antimonide with metallic luster and sharp calcite crystals; prized for sculptural form and historic European and Canadian localities. - [Dzhezkazgan mining district, Kazakhstan Locality Guide](https://earthwonders.com/guides/dzhezkazgan-mining-district_kazakhstan_73046): Dzhezkazgan mining district, Kazakhstan — premier sandstone-hosted copper locality yielding bornite, chalcocite, native silver, calcite and quartz; prized for… - [Eagle Mine, USA Locality Guide](https://earthwonders.com/guides/eagle-mine_usa_73239): A collector's guide to Eagle Mine, USA: its geology, mining history and notable minerals, illustrated with the 88 specimens documented from this locality on EarthWonders. - [Eagle's Nest Mine, USA Locality Guide](https://earthwonders.com/guides/eagles-nest-mine_usa_73341): A collector's guide to Eagle's Nest Mine, USA: its geology, mining history and notable minerals, illustrated with the 187 specimens documented from this locality on EarthWonders. - [Eagle’s Nest Mine, USA Locality Guide](https://earthwonders.com/guides/eagles-nest-mine_usa_573169): Eagle’s Nest Mine, USA — crystallized California gold in quartz seams, renowned for flattened octahedra and sprays, making it highly prized by serious collecto… - [East Colusa Mine, USA Locality Guide](https://earthwonders.com/guides/east-colusa-mine_usa_73622): East Colusa Mine, USA — official type locality of colusite Cu13VAs3S16, with covellite iridescence, enargite, and quartz; a key Butte copper locality for colle… - [Egremont, UK Locality Guide](https://earthwonders.com/guides/egremont_uk_75285): Egremont, UK - renowned replacement-ore locality famed for high-grade hematite and dramatic fluorite-on-hematite, with classic Florence Mine associations. - [Egypt Locality Guide](https://earthwonders.com/guides/egypt_51): A collector's guide to Egypt: its geology, mining history and notable minerals, illustrated with the 47 specimens documented from this locality on EarthWonders. - [Ehrenfriedersdorf, Germany Locality Guide](https://earthwonders.com/guides/ehrenfriedersdorf_germany_75329): Ehrenfriedersdorf, Germany — historic tin-tungsten greisen locality famed for fluorapatite, cassiterite, fluorite, and rare phosphates; classic, collectible sp… - [Eisleben, Germany Locality Guide](https://earthwonders.com/guides/eisleben_germany_75586): Eisleben, Germany — historic mining town in the Mansfeld Basin, known for copper-silver ore minerals with nickel arsenides (nickeline, maucherite); type locali… - [Elba Island, Italy Locality Guide](https://earthwonders.com/guides/elba-island_italy_75751): A collector's guide to Elba Island, Italy: its geology, mining history and notable minerals, illustrated with the 49 specimens documented from this locality on EarthWonders. - [El Choique mine, Argentina Locality Guide](https://earthwonders.com/guides/el-choique-mine_argentina_75891): El Choique, Argentina - Patagonian locality famed for pink amethyst geodes in late Cretaceous anhydrite, with quartz and calcite, sought by serious collectors. - [El Cobre mine, Mexico Locality Guide](https://earthwonders.com/guides/el-cobre-mine_mexico_75899): El Cobre mine, Mexico, renowned for blue azurite crystals and malachite replacements in a complex skarn system, yielding pockets prized by collectors. - [El Desierto mine, Bolivia Locality Guide](https://earthwonders.com/guides/el-desierto-mine_bolivia_75952): El Desierto mine, Bolivia: remote sulfur locality known for sharp canary-yellow native sulfur crystals on sulfate rock, highly sought by serious collectors. - [El Dorado County, USA Locality Guide](https://earthwonders.com/guides/el-dorado-county_usa_574300): El Dorado County, USA — Sierra Nevada gold locality famed for native gold in quartz, crystalline gold, and historic collector specimens. - [El Entredicho Mine, Spain Locality Guide](https://earthwonders.com/guides/el-entredicho-mine_spain_76141): El Entredicho Mine, Spain - Almadén locality for brilliant red cinnabar crystals and rare mercury-associated micro-minerals, highly prized by collectors. - [El Hammam, Morocco Locality Guide](https://earthwonders.com/guides/el-hammam_morocco_76303): El Hammam, Morocco — classic fluorite locality known for green to yellow fluorite cubes, pyrite, quartz, and REE-rich mineralization prized by collectors. - [El-Hamra Lake, Egypt Locality Guide](https://earthwonders.com/guides/el-hamra-lake_egypt_76307): El-Hamra Lake, Egypt - a classic evaporite locality in Wadi El-Natrun, producing trona, halite, sulfates, and carbonates; prized for color, formation history,… - [Elizabeth R. Mine, USA Locality Guide](https://earthwonders.com/guides/elizabeth-r-mine_usa_76417): Elizabeth R. Mine, USA — premier morganite locality in the Chief Mountain pegmatites; pastel pink morganite on cleavelandite, often with pale aquamarine. - [Elk Creek, USA Locality Guide](https://earthwonders.com/guides/elk-creek_usa_76453): Elk Creek, USA - renowned for golden barite in septarian concretions with yellow calcite linings and fossil-rich interiors, a top collecting locality. - [El Mochito Mine, Honduras Locality Guide](https://earthwonders.com/guides/el-mochito-mine_honduras_76937): El Mochito Mine, Honduras - a long-running Zn-Pb-Ag locality famed for native silver wires, cinnamon-brown garnets, quartz, aragonite, and rare skarn minerals. - [Elmwood Mine, USA Locality Guide](https://earthwonders.com/guides/elmwood-mine_usa_76987): Elmwood Mine, USA - premier Tennessee locality renowned for dark sphalerite, purple fluorite, amber calcite, and white barite, prized by collectors. - [El Refugio Mine, Mexico Locality Guide](https://earthwonders.com/guides/el-refugio-mine_mexico_77152): El Refugio Mine, Mexico, Choix, Sinaloa, famed for botryoidal smithsonite colors from a restricted oxidized zone, making specimens highly prized by collectors. - [Emerald from Habach valley, Austria](https://earthwonders.com/guides/emerald_from_habach-valley_austria_103573): Habachtal, Austria - classic emerald locality yielding emeralds and pale beryl; alpine schists create sharp prisms on matrix, prized for history and color. - [Emerald](https://earthwonders.com/guides/emerald): Emerald: iconic green beryl crystals prized for saturated color and rarity of gemmy prisms; legendary localities include Muzo, Chivor, Kagem. - [Emerald from Muzo Mine, Colombia](https://earthwonders.com/guides/emerald_from_muzo-mine_colombia_174952): Emerald from Muzo Mine, Colombia: vivid green with internal glow, formed in sedimentary shales and calcite, often with pyrite and parisite-(Ce) on calcite. - [Emerald from Kagem Emerald Mine, Zambia](https://earthwonders.com/guides/emerald_from_kagem-emerald-mine_zambia_125237): Emerald from Kagem, Zambia — vivid green beryl crystals with strong translucency, schist-hosted formation, prized for color, provenance, and collecting appeal. - [Emerald from Panjshir, Afghanistan](https://earthwonders.com/guides/emerald_from_panjshir_afghanistan_192341): Panjshir emeralds, Afghanistan — a modern source known for saturated green crystals from hydrothermal veins; prized for sharp hexagonal prisms and color. - [Emerald from Coscuez Mine, Colombia](https://earthwonders.com/guides/emerald_from_coscuez-mine_colombia_58552): Emerald - Coscuez Mine, Colombia: glassy hexagonal beryl with rich green saturation and lively transparency, set in calcite veins, a prized collector locality. - [Emerald from Chivor Mine, Colombia](https://earthwonders.com/guides/emerald_from_chivor-mine_colombia_50174): Chivor emeralds, Colombia — renowned for blue-green, high-transparency crystals with a velvety glow from the Eastern Cordillera, prized by collectors. - [Emilio Mine, Spain Locality Guide](https://earthwonders.com/guides/emilio-mine_spain_77597): Emilio Mine, Spain — renowned Asturias fluorite locality known for water-clear fluorite, colorless to pale blue on baryte and quartz, prized by collectors. - [Emma Mine, null Locality Guide](https://earthwonders.com/guides/emma-mine_null_573317): Emma Mine, Butte, Montana — a rhodochrosite source; famed for rosy crystals, layered bands, and being Butte’s largest Mn producer, prized by collectors. - [Emma Mine, USA Locality Guide](https://earthwonders.com/guides/emma-mine_usa_77669): Emma Mine, USA: Montana rhodochrosite from the Butte system with rose-pink crystals; New Mexico azurite in oxidized zones; prized by collectors. - [Emmons Quarry, Greenwood, Oxford County, USA Locality Guide](https://earthwonders.com/guides/emmons-quarry-greenwood-oxford-county_usa_573361): Emmons Quarry, Greenwood, Oxford County, USA - Maine pegmatite yielding fluorapatite, lithiophilite, perhamite and cesium minerals, prized by collectors. - [Emperor Mine, Fiji Locality Guide](https://earthwonders.com/guides/emperor-mine_fiji_77757): Emperor Mine, Fiji - a renowned telluride locality producing native tellurium and sylvanite; prized for sharp cabinet crystals and its historic mining legacy. - [Empire State No. 2 Mine, USA Locality Guide](https://earthwonders.com/guides/empire-state-no-2-mine_usa_77862): Empire State No. 2 Mine - classic Balmat zinc locality in St. Lawrence County, NY, famed for sphalerite-rich ore and a historic scientific pedigree. - [Empire State No. 4 Mine, USA Locality Guide](https://earthwonders.com/guides/empire-state-no-4-mine_usa_77863): A collector's guide to Empire State No. 4 Mine, USA: its geology, mining history and notable minerals, illustrated with the 90 specimens documented from this locality on EarthWonders. - [Enargite from Butte Mining District, Montana, USA](https://earthwonders.com/guides/enargite_from_butte-mining-district_usa_38464): Enargite — steel-gray to iron-black prisms from the Butte Mining District; prized for sharp orthorhombic form, mirror terminations, and iconic orebody context. - [Enargite](https://earthwonders.com/guides/enargite): Enargite: sharp metallic prisms, gunmetal color with iridescent tarnish; rare top specimens on quartz or pyrite from classic mines like Butte, Bingham. - [Enargite from Quiruvilca District, La Libertad, Peru](https://earthwonders.com/guides/enargite_from_quiruvilca-district_peru_566937): Enargite — Quiruvilca, Peru: dark metallic crystals with steel-black luster, often with pyrite; locality-defining specimens prized for six-pointed trillings. - [England, UK Locality Guide](https://earthwonders.com/guides/england_uk_78138): England, UK - a country-scale treasury of classic orefields: Cornwall/Devon copper and tin minerals; Northern Pennines lead-zinc-fluorite-barium veins; Derbysh… - [Enosburg Falls Stone Quarry, null Locality Guide](https://earthwonders.com/guides/enosburg-falls-stone-quarry_null_573291): Enosburg Falls Stone Quarry, Vermont: distinctive locality yielding albite-quartz-chlorite-epidote fissure specimens, with hematite rosettes on pale feldspar. - [Eosphorite from Ilha Claim, Brazil](https://earthwonders.com/guides/eosphorite_from_ilha-claim_brazil_116745): Eosphorite from Ilha Claim, Brazil: golden-brown blades on pink rose-quartz; notable rare phosphate associations and classic Jequitinhonha pegmatite beauty. - [Eosphorite](https://earthwonders.com/guides/eosphorite): Eosphorite - manganese aluminum phosphate forming honey-brown crystals and radiating sprays; prized for contrast with albite/quartz and NH/SD localities. - [Epidote from Tormiq Valley, Pakistan](https://earthwonders.com/guides/epidote_from_tormiq-valley_pakistan_258853): Epidote from Tormiq Valley, Pakistan — pleochroic, glassy crystals with sharp terminations and dramatic color shifts, prized for Alpine-cleft paragenesis. - [Epidote from Pampa Blanca, Peru](https://earthwonders.com/guides/epidote_from_pampa-blanca_peru_192118): Pampa Blanca epidote: Peruvian classic with black-green radiating fans on quartz; prized for architectural sprays, sharp terminations, and dramatic light play. - [Epidote](https://earthwonders.com/guides/epidote): Epidote - vibrant pistachio to bottle-green crystals with prismatic forms, Alpine fissure and skarn varieties, and diverse collecting localities worldwide. - [Epidote from Prince of Wales Island, Alaska, USA](https://earthwonders.com/guides/epidote_from_prince-of-wales-island_usa_204144): Prince of Wales Island epidote — dark, lustrous monoclinic crystals from Green Monster Mountain; prized by collectors for deep color and rugged skarn habit. - [Equador, Brazil Locality Guide](https://earthwonders.com/guides/equador_brazil_78643): A collector's guide to Equador, Brazil: its geology, mining history and notable minerals, illustrated with the 51 specimens documented from this locality on EarthWonders. - [Erongo Mountains, Namibia Locality Guide](https://earthwonders.com/guides/erongo-mountains_namibia_78994): A collector's guide to Erongo Mountains, Namibia: its geology, mining history and notable minerals, illustrated with the 1326 specimens documented from this locality on EarthWonders. - [Erongo Region, Namibia Locality Guide](https://earthwonders.com/guides/erongo-region_namibia_78995): Erongo Region, Namibia - famed for cavity-formed pegmatite crystals, featuring aquamarine and smoky quartz, plus emerald fluorite; a premier site for collector… - [Erupción Mine, Mexico Locality Guide](https://earthwonders.com/guides/erupcin-mine_mexico_79069): Erupción Mine, Mexico — famous for orange wulfenite crystals on calcite in a historic carbonate-hosted oxidized deposit, prized by collectors for its diverse m… - [Erythrite](https://earthwonders.com/guides/erythrite): Erythrite — vivid crimson-to-magenta acicular crystals, radiating sprays on calcite; prized for color, rarity, and historic Moroccan Bou Azzer finds. - [Erythrite from Bou Azzer Mining District, Morocco](https://earthwonders.com/guides/erythrite_from_bou-azzer-mining-district_morocco_31847): Bou Azzer Mining District, Morocco — renowned for erythrite and cobalt arsenides; vivid magenta blades, luster, and rarity prized by collectors. - [Erzgebirgskreis, Germany Locality Guide](https://earthwonders.com/guides/erzgebirgskreis_germany_79117): Erzgebirgskreis, Germany — renowned locality for native silver and fluorite; Schneeberg and Niederschlag yield collectible specimens with strong provenance. - [Espírito Santo, Brazil Locality Guide](https://earthwonders.com/guides/esprito-santo_brazil_79557): Espírito Santo, Brazil — a famed pegmatite locality yielding chrysoberyl, aquamarine, beryl, topaz, and phenakite; prized for pencil aquamarine, color zoning,… - [Estacion Ojo Laguna, Mexico Locality Guide](https://earthwonders.com/guides/estacion-ojo-laguna_mexico_79699): Estación Ojo Laguna, Mexico — premier agate locality for Laguna Agate, a nodular, banded chalcedony with vivid colors, sharp fortifications, and parallax bands. - [Ettringite from Wessels Mine, South Africa](https://earthwonders.com/guides/ettringite_from_wessels-mine_south-africa_289263): Ettringite from Wessels Mine, South Africa — a defining Kalahari Manganese Field mineral with lemon-yellow crystals and strong collecting appeal. - [Ettringite](https://earthwonders.com/guides/ettringite): Ettringite: lemon-yellow hexagonal prisms; a fragile hydrated sulfate with notable localities like Kalahari and Eifel, Crestmore, prized by collectors. - [Ettringite from N'Chwaning II Mine, South Africa](https://earthwonders.com/guides/ettringite_from_nchwaning-ii-mine_south-africa_177163): Ettringite from N'Chwaning II, South Africa: lemon-to-sulfur yellow, glassy hexagonal prisms with inner glow; valued for color, form, and provenance. - [Euclase](https://earthwonders.com/guides/euclase): Euclase - rare BeAl silicate prized for vivid blue crystals, glassy luster, and sharp terminations; scarce pristine pieces from pegmatites in Brazil. - [Eugui, Spain Locality Guide](https://earthwonders.com/guides/eugui_spain_80168): Eugui, Spain - classic European carbonate locality famed for sharp dolomite and magnesite, zebra banding, historic quarries, and strong collector appeal. - [Fairfax quarry, Centreville, null Locality Guide](https://earthwonders.com/guides/fairfax-quarry-centreville_null_573353): Fairfax quarry, Centreville — notable trap-rock locality yielding mint-green prehnite, glassy apophyllite, byssolite, thaumasite and sulfides for collectors. - [Fallowfield Mine, UK Locality Guide](https://earthwonders.com/guides/fallowfield-mine_uk_81530): Fallowfield Mine, UK — Northern Pennine locality famed for witherite and alstonite, white-to-grey translucent crystals; historic type locality for Ba carbonate… - [Fanado mines, Capelinha, null Locality Guide](https://earthwonders.com/guides/fanado-mines-capelinha_null_573318): Fanadinho mines, Capelinha — Capelinha titanite-epidote district in Minas Gerais, yielding greenish-yellow titanite and epidote from hydrothermal veins. - [Fano Mine, USA Locality Guide](https://earthwonders.com/guides/fano-mine_usa_81678): Fano Mine, USA: California gem-pegmatite locality prized for aquamarine, beryl, tourmaline, and quartz, noted for scarce pockets and historic collecting appeal. - [Fanwood Quarry, USA Locality Guide](https://earthwonders.com/guides/fanwood-quarry_usa_81700): Fanwood Quarry, USA - New Jersey locality famed for mint-green prehnite after glauberite, calcite, and zeolites in amygdaloidal basalts, prized by collectors. - [Faroe Islands, null Locality Guide](https://earthwonders.com/guides/faroe-islands_null_81885): A collector's guide to Faroe Islands, null: its geology, mining history and notable minerals, illustrated with the 50 specimens documented from this locality on EarthWonders. - [Fat Jack Mine, USA Locality Guide](https://earthwonders.com/guides/fat-jack-mine_usa_81992): Fat Jack Mine, USA — a classic American source of amethyst-tipped quartz scepters and smoky quartz, with rare lead-tungstate specimens and diverse sulfides. - [Feldspar](https://earthwonders.com/guides/feldspar): Feldspar — diverse colors and forms from amazonite to moonstone; Alpine and pegmatite locales yield prized color, luster, and collecting appeal. - [Feldspar from Paprok, Nuristan, Afghanistan](https://earthwonders.com/guides/feldspar_from_paprok_afghanistan_192559): Paprok feldspar, Nuristan, Afghanistan — albite cleavelandite and microcline in a rare lithium pegmatite, with tourmaline and topaz; prized by collectors. - [Feldspar from Erongo Mountains, Namibia](https://earthwonders.com/guides/feldspar_from_erongo-mountains_namibia_78994): Erongo Mountains, Namibia — feldspar forms the pale matrix in iconic pegmatites, with aquamarine, schorl, fluorite, and smoky quartz, a prized Erongo hallmark. - [Fenghuang Co., China Locality Guide](https://earthwonders.com/guides/fenghuang-co_china_82633): Fenghuang County, China — Chatian cinnabar from a hydrothermal belt, famed for saturated red crystals on dolomite with quartz; highly collectible. - [Fengjiashan Mine, China Locality Guide](https://earthwonders.com/guides/fengjiashan-mine_china_82643): A collector's guide to Fengjiashan Mine, China: its geology, mining history and notable minerals, illustrated with the 178 specimens documented from this locality on EarthWonders. - [Ferberite from Yaogangxian Mine, China](https://earthwonders.com/guides/ferberite_from_yaogangxian-mine_china_296590): Ferberite from the Yaogangxian Mine, China — jet-black, bladed wolframite-group crystals against quartz and dolomite; prized for rarity, form, and locality. - [Ferberite from Panasqueira Mines, Portugal](https://earthwonders.com/guides/ferberite_from_panasqueira-mines_portugal_192203): Ferberite, Panasqueira, Portugal: European classic ferberite with jet-black, sharp, three-dimensional blades in a quartz-rich host; prized for luster and form. - [Ferberite](https://earthwonders.com/guides/ferberite): Ferberite - iron-rich wolframite with stout blade-like prisms and deep black luster; forms in hydrothermal tin-tungsten deposits; prized on quartz or fluorite. - [Fibbia, Switzerland Locality Guide](https://earthwonders.com/guides/fibbia_switzerland_83125): Fibbia, Switzerland, Alpine cleft locality famed for hematite iron rose rosettes on adularia, with sculptural, metallic-black crystals prized by collectors. - [Filipstad, Sweden Locality Guide](https://earthwonders.com/guides/filipstad_sweden_83350): Filipstad, Sweden: historic locality anchored by Långban, yielding rare, scientifically important minerals and highly prized, information-rich specimens. - [Finch Mine, USA Locality Guide](https://earthwonders.com/guides/finch-mine_usa_83414): Finch Mine, USA locality—famed for orange to yellow wulfenite blades, often drusy with quartz and hemimorphite; a classic Arizona collectors’ site. - [Finland Locality Guide](https://earthwonders.com/guides/finland_60): A collector's guide to Finland: its geology, mining history and notable minerals, illustrated with the 60 specimens documented from this locality on EarthWonders. - [Flambeau Mine, USA Locality Guide](https://earthwonders.com/guides/flambeau-mine_usa_84115): Flambeau Mine, USA - a brief, rich open pit in Wisconsin's Penokean belt, famed for supergene chalcocite and bornite specimens with blue iridescence. - [Fletcher Mine, USA Locality Guide](https://earthwonders.com/guides/fletcher-mine_usa_84370): A collector's guide to Fletcher Mine, USA: its geology, mining history and notable minerals, illustrated with the 94 specimens documented from this locality on EarthWonders. - [Flinders Ranges, Australia Locality Guide](https://earthwonders.com/guides/flinders-ranges_australia_84450): Flinders Ranges, Australia — copper frontier locality famed for azurite and malachite in mines, plus rare scholzite from Reaphook Hill, prized by collectors. - [Flor de Peña Mine, Mexico Locality Guide](https://earthwonders.com/guides/flor-de-pea-mine_mexico_84590): Flor de Peña Mine, Mexico — type locality for legrandite; prized honey-yellow crystals on smithsonite, with intimate topotype specimens and collecting appeal. - [Florence Mine, UK Locality Guide](https://earthwonders.com/guides/florence-mine_uk_84657): Florence Mine, UK — a classic hematite locality in west Cumbria, yielding specularite, botryoidal hematite, and quartz; historic site prized by collectors. - [Florissant, USA Locality Guide](https://earthwonders.com/guides/florissant_usa_84788): A collector's guide to Florissant, USA: its geology, mining history and notable minerals, illustrated with the 54 specimens documented from this locality on EarthWonders. - [Fluorapatite](https://earthwonders.com/guides/fluorapatite): Fluorapatite: glassy hexagonal prisms in green, blue, yellow, pink, and more; valued for color, luster, and standout localities like Panasqueira and Sapo Mine. - [Fluorapatite from Panasqueira Mines, Portugal](https://earthwonders.com/guides/fluorapatite_from_panasqueira-mines_portugal_192203): Fluorapatite from Panasqueira Mines, Portugal: green to lilac, lustrous hexagonal prisms with color zoning, often on mica and sulfides in hydrothermal veins. - [Fluorapatite from Sapo Mine, Brazil](https://earthwonders.com/guides/fluorapatite_from_sapo-mine_brazil_228499): Fluorapatite from Sapo Mine, Brazil - mossy to bottle-green, glassy crystals in varied forms on pale matrix; multiple apatite phases require careful ID. - [Fluorapophyllite](https://earthwonders.com/guides/fluorapophyllite): Fluorapophyllite: glassy tetragonal crystals from India’s Deccan Traps, colorless to mint-green with peach/orange forms; prized for luster and collecting value. - [Fluorite from Shangbao Mine, China](https://earthwonders.com/guides/fluorite_from_shangbao-mine_china_233678): Fluorite from Shangbao Mine, China: architectural, glassy crystals with internal phantoms and vivid zoning; a modern classic prized by collectors. - [Fluorite from St Peters Mine, UK](https://earthwonders.com/guides/fluorite_from_st-peters-mine_uk_247706): St Peters Mine, UK fluorite locality known for apple-green to pale lilac cubes, thinly zoned with quartz and siderite, prized by British collectors. - [Fluorite from Blackdene Mine, UK](https://earthwonders.com/guides/fluorite_from_blackdene-mine_uk_26410): Fluorite from Blackdene Mine, UK - purple to lavender cubes with glassy faces, color zoning, and UV fluorescence; a classic Weardale specimen for collectors. - [Fluorite from Cambokeels Mine, UK](https://earthwonders.com/guides/fluorite_from_cambokeels-mine_uk_40350): Cambokeels Mine, UK—classic Weardale fluorite with lavender to purple cubes, color-zoned twins, and UV fluorescence; prized for provenance and historic stock. - [Fluorite from Berbes, Spain](https://earthwonders.com/guides/fluorite_from_berbes_spain_22310): Berbes, Asturias, Spain - classic fluorite locality famed for purple-blue cubes with violet cores, white baryte contrasts, and prized collector specimens. - [Fluorite from Brownley Hill Mine, UK](https://earthwonders.com/guides/fluorite_from_brownley-hill-mine_uk_35163): Brownley Hill fluorite — amber cubes on dark sphalerite from the Northern Pennine Orefield; a classic UK locality prized for color, rarity, and mining history. - [Fluorite](https://earthwonders.com/guides/fluorite): Fluorite - calcium fluoride with a dazzling color range, cubic and octahedral crystals, and UV fluorescence; prized by collectors for Blue John banding. - [Flux Mine, USA Locality Guide](https://earthwonders.com/guides/flux-mine_usa_84989): Flux Mine, USA: classic cerussite locality known for needle-like crystals in jackstraw bundles perched on dark matrix, recognizable to collectors. - [Flux Mine, USA Locality Guide](https://earthwonders.com/guides/flux-mine_usa_84988): Flux Mine, USA — an Arizona locality famed for textured cerussite sprays and acicular crystals, with associated lead minerals; a collectible source. - [Fontainebleau, France Locality Guide](https://earthwonders.com/guides/fontainebleau_france_85249): Fontainebleau, France — renowned for sand-calcite crystals in quartz sand, unique poikilitic textures, and a storied history treasured by collectors. - [Foote Lithium Co. Mine, USA Locality Guide](https://earthwonders.com/guides/foote-lithium-co-mine_usa_85486): A collector's guide to Foote Lithium Co. Mine, USA: its geology, mining history and notable minerals, illustrated with the 33 specimens documented from this locality on EarthWonders. - [Force Crag Mine, UK Locality Guide](https://earthwonders.com/guides/force-crag-mine_uk_85545): Force Crag Mine, UK, a premier English vein locality prized for high-contrast sphalerite, barite, siderite and galena, with mining history and preserved mill. - [Fort Drum, USA Locality Guide](https://earthwonders.com/guides/fort-drum_usa_85987): Fort Drum, USA: Rucks' Pit yields fossil Mercenaria permagna clams with honey-yellow to amber calcite crystals, often geode-like and prized by collectors. - [Foster Hallman claims, USA Locality Guide](https://earthwonders.com/guides/foster-hallman-claims_usa_86337): Petersen Mountain, Nevada — Foster Hallman claims pockets yield smoky, amethyst, and citrine-toned sceptered crystals prized by collectors. - [France Locality Guide](https://earthwonders.com/guides/france_61): France: diverse fluorite colors, quartz, azurite, and rare arsenates from Alpine clefts to Cap Garonne; storied localities and prized, named specimens. - [Franckeite from San José Mine, Bolivia](https://earthwonders.com/guides/franckeite_from_san-jose-mine_bolivia_226160): Franckeite from the San José Mine is one of the classic Bolivian sulfosalt specimens: black to steel-gray, metallic, soft, heavy, and often built from curving blades and radiating rosettes rather than... - [Franckeite](https://earthwonders.com/guides/franckeite): Franckeite, a rare micaceous lead-tin-antimony sulfosalt, forms layered rosettes and curved plates; Bolivian origin and texture make it collectible. - [Francon quarry, Canada Locality Guide](https://earthwonders.com/guides/francon-quarry_canada_86965): Francon quarry, Canada — benchmark locality for weloganite, with pale straw-yellow to amber prisms in vugs, prized for rarity and its Canadian mineral history. - [Franklin Mine, USA Locality Guide](https://earthwonders.com/guides/franklin-mine_usa_87105): Franklin Mine, USA — top locality for franklinite, willemite, zincite and calcite; iconic UV fluorescence, ancient ore, and rich collecting history. - [Franklin Mine, USA Locality Guide](https://earthwonders.com/guides/franklin-mine_usa_87112): Franklin Mine, USA - premier New Jersey locality famed for franklinite, willemite, and zincite; striking black octahedra on calcite with vivid UV fluorescence. - [Franklin Mining District, USA Locality Guide](https://earthwonders.com/guides/franklin-mining-district_usa_87122): Franklin Mining District, USA — renowned for franklinite, willemite, zincite, and calcite; world-famous fluorescent suite and premier collector locality. - [Franklin, USA Locality Guide](https://earthwonders.com/guides/franklin_usa_87048): Franklin, USA - world-renowned locality in Franklin Marble producing franklinite, willemite, and zincite; famed fluorescence, specimens, and collector value. - [Frazer's Hush Mine, UK Locality Guide](https://earthwonders.com/guides/frazers-hush-mine_uk_87351): Frazer's Hush Mine, UK — renowned Weardale locality yielding purple fluorite cubes with quartz and galena, prized by collectors for color, rarity and display. - [Freiberg, Germany Locality Guide](https://earthwonders.com/guides/freiberg_germany_87623): Freiberg, Germany — historic silver-rich Pb-Zn district, classic acanthite and proustite, native silver, fluorite, and old mining labels prized by collectors. - [Freiberg Mining District, Germany Locality Guide](https://earthwonders.com/guides/freiberg-mining-district_germany_87627): A collector's guide to Freiberg Mining District, Germany: its geology, mining history and notable minerals, illustrated with the 35 specimens documented from this locality on EarthWonders. - [Fresnillo, Mexico Locality Guide](https://earthwonders.com/guides/fresnillo_mexico_87922): Fresnillo, Mexico — premier silver locality with Ag-Pb-Zn epithermal veins; coveted sulfosalts like pyrargyrite, acanthite, stephanite, polybasite on calcite. - [Friedrichssegen Mine, Germany Locality Guide](https://earthwonders.com/guides/friedrichssegen-mine_germany_88117): Friedrichssegen Mine, Germany - Emser Gangzug locality famed for barrel-shaped pyromorphite crystals; historic mining and rich secondary minerals. - [Frizington Mine, UK Locality Guide](https://earthwonders.com/guides/frizington-mine_uk_88290): A collector's guide to Frizington Mine, UK: its geology, mining history and notable minerals, illustrated with the 267 specimens documented from this locality on EarthWonders. - [Frohnau, Germany Locality Guide](https://earthwonders.com/guides/frohnau_germany_565292): A collector's guide to Frohnau, Germany: its geology, mining history and notable minerals, illustrated with the 44 specimens documented from this locality on EarthWonders. - [Fujian, China Locality Guide](https://earthwonders.com/guides/fujian_china_88706): Fujian, China - a collector-focused locality known for fluorite cubes on quartz (blue-violet), Nanping rare-metal pegmatites, and related minerals. - [Fuka mine, Japan Locality Guide](https://earthwonders.com/guides/fuka-mine_japan_88735): A collector's guide to Fuka mine, Japan: its geology, mining history and notable minerals, illustrated with the 23 specimens documented from this locality on EarthWonders. - [Gachalá, Colombia Locality Guide](https://earthwonders.com/guides/gachal_colombia_568463): Gachalá, Colombia: a key emerald belt locality known for emerald and euclase crystals, pocket-vein mineralization, and the famous Gachala Emerald. - [Galena from Joplin Field, USA](https://earthwonders.com/guides/galena_from_joplin-field_usa_123826): Galena from Joplin Field, USA: heavy architectural steel-gray cubes on chert, iconic Tri-State lead-sulfide; historic mining context adds collecting value. - [Galena from Naica Mine, Mexico](https://earthwonders.com/guides/galena_from_naica_mexico_175533): Naica Mine, Mexico — famed galena from a Pb-Zn-Ag system, with bright metallic cubes and striking associations to calcite, quartz, fluorite, and selenite caves. - [Galena from Viburnum Trend, Missouri, USA](https://earthwonders.com/guides/galena_from_viburnum-trend-mining-district_usa_282857): Galena from Viburnum Trend, Missouri - a world-class MVT district prized for crisp metallic cubes, rich luster, and associations with dolomite and sulfides. - [Galena](https://earthwonders.com/guides/galena): Galena - metallic luster with cube and cuboctahedral crystals, often twinned; sharp cleavage reveals reflective planes, a standout sulfide for collectors. - [Galena from Herja Mine, Romania](https://earthwonders.com/guides/galena_from_herja-mine_romania_108882): Galena from Herja Mine, Romania — metallic cuboctahedra with famed paragenesis (calcite, sphalerite, siderite) and rich sulfosalts, prized by collectors. - [Galena from Madan Ore Field, Bulgaria](https://earthwonders.com/guides/galena_from_madan-ore-field_bulgaria_153449): Galena from Madan Ore Field, Bulgaria — architectural cubic and cuboctahedral crystals with mirror-bright luster, prized for 3D form and Rhodope locality. - [Galena from Trepča Stari Trg Mine, Kosovo](https://earthwonders.com/guides/galena_from_trepca-stari-trg-mine_kosovo_260391): Galena from Trepča Stari Trg Mine, Kosovo — star-like crystals on pyrrhotite, rich locality history, and collector-grade associations that set this piece apart. - [Galena from Dalnegorsk, Russia](https://earthwonders.com/guides/galena_from_dalnegorsk_russia_63378): Galena — Dalnegorsk, Russia: heavy lead-gray metallic crystals with sculptural cuboctahedral faces and dramatic intergrowths; prized locality for collectors. - [Galiléia, Brazil Locality Guide](https://earthwonders.com/guides/galilia_brazil_89655): A collector's guide to Galiléia, Brazil: its geology, mining history and notable minerals, illustrated with the 105 specimens documented from this locality on EarthWonders. - [Ganesh Himal, Nepal Locality Guide](https://earthwonders.com/guides/ganesh-himal_nepal_90004): Ganesh Himal, Nepal — high-altitude locality yielding quartz with green chlorite inclusions and marble-hosted ruby and sapphire; prized for rarity and striking… - [Ganzhou, China Locality Guide](https://earthwonders.com/guides/ganzhou_china_90095): Ganzhou, China — premier collector locality in southern Jiangxi’s tungsten belt, famed for Xiefang barite-on-fluorite with amber barite on green to purple fluo… - [Ganzizhou Mine, null Locality Guide](https://earthwonders.com/guides/ganzizhou-mine_null_573264): Ganzizhou Mine, Sichuan, China — rare locality yielding native gold in quartz-galena and black babingtonite–prehnite crystals, prized by collectors. - [Garam Chashma, Pakistan Locality Guide](https://earthwonders.com/guides/garam-chashma_pakistan_90199): Garam Chashma, Pakistan — emerald locality yielding saturated green Besti crystals on dark mica schist and quartz; prized for specimen-on-matrix prisms. - [Garnet from Jeffrey Mine, Quebec, Canada](https://earthwonders.com/guides/garnet_from_jeffrey-mine_canada_121627): Garnet from Jeffrey Mine, Quebec — grossular varieties from cinnamon to pink, gem-like on diopside, prized for cabinet-quality crystals and classic locality. - [Garnet](https://earthwonders.com/guides/garnet): Garnet — Collector’s Guide: iconic crystal forms and vivid colors across species, top localities worldwide, quality factors, and care for display. - [Garnet from Wushan Spessartine Mine, Fujian, China](https://earthwonders.com/guides/garnet_from_wushan-spessartine-mine_china_295209): Garnet spessartine from Wushan Spessartine Mine, Fujian: orange to red-orange crystals in miarolitic granite, prized for luster, color, and dramatic crystal ar… - [Garnet from Ala Valley, Piedmont, Italy](https://earthwonders.com/guides/garnet_from_ala-valley_italy_3652): Ala Valley garnet, Piedmont, Italy — classic Alpine hessonite and grossular-andradite in rodingites, with diopside and clinochlore, sharp dodecahedral forms. - [Garnet from Saranovskii Mine, Urals, Russia](https://earthwonders.com/guides/garnet_from_saranovskii-mine_russia_228578): Saranovskii Mine, Urals, Russia — type locality for uvarovite garnet; emerald-green drusy crystals on chromite, highly valued by collectors for locality weight. - [Garnet from Sierra de Cruces, Coahuila, Mexico](https://earthwonders.com/guides/garnet_from_sierra-de-cruces_mexico_235825): Garnet from Sierra de Cruces, Coahuila - raspberry-red grossular dodecahedra on pale matrix, sharp color zoning, and collector appeal from a notable locality. - [Garnet Hill, null Locality Guide](https://earthwonders.com/guides/garnet-hill_null_573292): Garnet Hill, Nevada — classic locality yielding sharp, glassy almandine garnets in rhyolite cavities, with long-standing rockhounding appeal and storied labels. - [Garnet Ledge, USA Locality Guide](https://earthwonders.com/guides/garnet-ledge_usa_90535): Garnet Ledge, Alaska — iconic Wrangell locality yielding deep red almandine garnets in schist; prized cabinet-class crystals and a key metamorphic reference. - [Geevor Mine, UK Locality Guide](https://earthwonders.com/guides/geevor-mine_uk_91158): Geevor Mine, UK, Cornwall tin locality famed for chalcocite, cassiterite-bearing veins, quartz and calcite; strong provenance prized by collectors. - [Georg Mine, Germany Locality Guide](https://earthwonders.com/guides/georg-mine_germany_91918): Georg Mine, Germany - a premier bournonite locality famed for dense siderite-supported sulfides and historic Siegerland-Wied mining context. - [Germany Locality Guide](https://earthwonders.com/guides/germany_65): Germany: a mosaic of historic mines from Erzgebirge to Freiberg and Clara Mine, prized for wire silver, sulfides, proustite, pyromorphite, and micromounts. - [Getchell Mine, USA Locality Guide](https://earthwonders.com/guides/getchell-mine_usa_92227): A collector's guide to Getchell Mine, USA: its geology, mining history and notable minerals, illustrated with the 30 specimens documented from this locality on EarthWonders. - [Ghundao hill, Pakistan Locality Guide](https://earthwonders.com/guides/ghundao-hill_pakistan_92399): Ghundao Hill, Pakistan — a carbonate-vein locality yielding pink to violet-pink topaz in calcite-quartz veins, prized for glassy crystals and collector appeal. - [Gibraltar Mine, Mexico Locality Guide](https://earthwonders.com/guides/gibraltar-mine_mexico_92522): Gibraltar Mine, Mexico — Naica district locality known for glassy fluorite on sulfide matrix, galena, calcite, and rare gypsum; provenance adds collector value. - [Gilgit-Baltistan, Pakistan Locality Guide](https://earthwonders.com/guides/gilgit-baltistan_pakistan_92841): Gilgit-Baltistan, Pakistan — renowned gem pegmatites yield aquamarine, topaz, spessartine, fluorapatite; cabinet-quality crystals and high collector appeal. - [Gilgit District, Pakistan Locality Guide](https://earthwonders.com/guides/gilgit-district_pakistan_92842): A collector's guide to Gilgit District, Pakistan: its geology, mining history and notable minerals, illustrated with the 160 specimens documented from this locality on EarthWonders. - [Gilgit, Pakistan Locality Guide](https://earthwonders.com/guides/gilgit_pakistan_92840): Gilgit, Pakistan — famed pegmatite locality yielding aquamarine, tourmaline and beryl; prized for high-mountain clarity, diverse minerals, and collector histor… - [Gillette Quarry, USA Locality Guide](https://earthwonders.com/guides/gillette-quarry_usa_92874): Gillette Quarry, USA - classic Haddam Neck pegmatite in Connecticut; early elbaite source with slender green-blue tourmalines and notable pocket associations. - [Globe, USA Locality Guide](https://earthwonders.com/guides/globe_usa_93936): Globe, USA — Arizona copper locality oxidized specimens: malachite, chrysocolla, azurite, native copper, calcite; Old Dominion and Blue Ball Mine highlights. - [Glove Mine, USA Locality Guide](https://earthwonders.com/guides/glove-mine_usa_94075): Glove Mine, Arizona: classic wulfenite locality with thick tabular blades in butterscotch to honey-yellow, architectural crystals, and strong collector appeal. - [Goble, USA Locality Guide](https://earthwonders.com/guides/goble_usa_574917): A collector's guide to Goble, USA: its geology, mining history and notable minerals, illustrated with the 30 specimens documented from this locality on EarthWonders. - [Goboboseb Mountains, Namibia Locality Guide](https://earthwonders.com/guides/goboboseb-mountains_namibia_94627): Goboboseb Mountains, Namibia — premier quartz locality famed for phantom-growth and color-rich crystals, with rare basalt-pocket specimens prized by collectors. - [Goethite from Ojuela Mine, Mapimí, Mexico](https://earthwonders.com/guides/goethite_from_ojuela-mine_mexico_186119): Goethite from Ojuela Mine, Mapimí, Mexico - botryoidal, iridescent specimens prized for sculptural form, rich oxidized-zone associations, and collector value. - [Goethite from Tharsis Mines, Huelva, Spain](https://earthwonders.com/guides/goethite_from_tharsis-mines_spain_255137): Goethite from Tharsis Mines, Huelva, Spain: iridescent textures and botryoidal fronts; prized by collectors for color, form, and locality. - [Goethite from Filón Sur open pit, Spain](https://earthwonders.com/guides/goethite_from_filn-sur-open-pit_spain_83379): Filón Sur goethite, Spain — iridescent botryoidal and stalactitic forms from a classic Iberian Pyrite Belt locality; prized for saturated color, metallic luste… - [Goethite](https://earthwonders.com/guides/goethite): Goethite - iridescent botryoidal crusts, stalactitic forms, and rare euhedral crystals; a striking, affordable display mineral with strong color. - [Goethite from Tsumeb, Namibia](https://earthwonders.com/guides/goethite_from_tsumeb_namibia_261664): Goethite - from Tsumeb, Namibia: yellow-brown earthy masses, velvety acicular crystals, and botryoidal forms; prized for texture and paragenesis. - [Goiás, Brazil Locality Guide](https://earthwonders.com/guides/gois_brazil_94787): Goiás, Brazil — a key collector locality with zircon and kyanite crystals, emerald districts at Campos Verdes, and the Mara Rosa–Santa Terezinha belt. - [Golconda pegmatite field, Brazil Locality Guide](https://earthwonders.com/guides/golconda-pegmatite-field_brazil_94866): Golconda pegmatite field, Brazil — a top mineral locality producing blue/green elbaite tourmaline, bertrandite, fluorapatite, plus fine specimens. - [Gold from Olinghouse Mining District, Nevada, USA](https://earthwonders.com/guides/gold_from_olinghouse-mining-district_usa_187321): Olinghouse Mining District gold, Nevada — pale-yellow native gold and electrum with wire nests and crystalline textures, prized for locality and architecture. - [Gold from Farncomb Hill, Breckenridge, Colorado, USA](https://earthwonders.com/guides/gold_from_farncomb-hill_usa_81863): Farncomb Hill, Breckenridge, Colorado — classic American locality for leaf, wire, and sculptural gold; prized for dramatic forms and historic collector demand. - [Gold](https://earthwonders.com/guides/gold): Gold: iconic native metal with sculptural crystals, herringbone leaves, and rich yellow hues; prized by collectors for locality lore, rarity, and striking form. - [Gold from Eagle's Nest Mine, California, USA](https://earthwonders.com/guides/gold_from_eagles-nest-mine_usa_73341): Gold from Eagle’s Nest Mine, California — specimen-grade native gold with sharp octahedra and dendritic forms, prized for locality and pocket material. - [Gold from Morro Velho Mine, Minas Gerais, Brazil](https://earthwonders.com/guides/gold_from_morro-velho-mine_brazil_171044): Gold from Morro Velho Mine, Minas Gerais, Brazil — historic Archean orogenic deposit; scarce native gold in quartz-carbonate-sulfide matrix with siderite and s… - [Gold from Round Mountain Mine, Nevada, USA](https://earthwonders.com/guides/gold_from_round-mountain-mine_usa_217989): Gold from Round Mountain Mine, Nevada — collectible native gold with crystal leaf-and-plate forms, herringbone leaves, and hoppery cubes in quartz-rich rock. - [Gold Hill, USA Locality Guide](https://earthwonders.com/guides/gold-hill_usa_96124): Gold Hill, USA - a classic Utah locality famed for oxidized arsenates, vivid limonite gossan, and rare species, with mine labels and connoisseur appeal. - [Gongcheng Co., China Locality Guide](https://earthwonders.com/guides/gongcheng-co_china_97106): Gongcheng County, Guangxi — famed for Daoping pyromorphite and yellow cerussite from a Pb–Zn system, with Limu rare-metal minerals prized by collectors. - [Gordonsville Mine, USA Locality Guide](https://earthwonders.com/guides/gordonsville-mine_usa_97579): Gordonsville Mine, USA - a Central Tennessee Zn district locality famed for sculptural vug specimens, purple fluorite on sphalerite, and calcite and baryte. - [Göschenen, Switzerland Locality Guide](https://earthwonders.com/guides/gschenen_switzerland_97742): Göschenen, Switzerland — Alpine locality famed for water-clear quartz and pink fluorite octahedra, from classic clefts and tunnel finds, prized by collectors. - [Göscheneralp, Switzerland Locality Guide](https://earthwonders.com/guides/gscheneralp_switzerland_564819): Göscheneralp, Switzerland — Alpine granite locality yielding glass-clear quartz and pink fluorite octahedra, prized by collectors for iconic specimens and hist… - [Governador Valadares, Brazil Locality Guide](https://earthwonders.com/guides/governador-valadares_brazil_565492): Governador Valadares, Brazil — a classic pegmatite locality yielding mica, beryl, and gem tourmaline; Golconda fields produce crystals prized by collectors. - [Grand Reef Mine, USA Locality Guide](https://earthwonders.com/guides/grand-reef-mine_usa_98848): Grand Reef Mine, USA - Arizona locality famed for vivid linarite and rare micro-minerals; prized pocket specimens and a type locality for several rare species. - [Grandview Mine, USA Locality Guide](https://earthwonders.com/guides/grandview-mine_usa_98901): Grandview Mine, USA - a Grand Canyon locality famed for vivid blue cyanotrichite and green brochantite, rare copper sulfates, and historic collecting appeal. - [Graves Mountain, USA Locality Guide](https://earthwonders.com/guides/graves-mountain_usa_99725): Graves Mountain, USA — a classic American locality known for large mirror-lustrous rutile, blue lazulite, and pale kyanite, prized by collectors. - [Great Orme, null Locality Guide](https://earthwonders.com/guides/great-orme_null_573323): Great Orme, UK - renowned for copper-dolomite assemblages: saddle dolomite with chalcopyrite and malachite, ancient mining heritage, and paragenetic landscapes. - [Greenland, Denmark Locality Guide](https://earthwonders.com/guides/greenland_denmark_100513): Greenland - Arctic Ilímaussaq complex yields rare minerals like eudialyte, arfvedsonite, and sodalite; iconic specimens and fluorescence appeal to collectors. - [Greenlaws Mine, UK Locality Guide](https://earthwonders.com/guides/greenlaws-mine_uk_100521): Greenlaws Mine, UK — Weardale, Pennine Orefield; renowned for color-zoned fluorite cubes from vuggy flats, with historic lead context and modern access. - [Greystone Quarry, UK Locality Guide](https://earthwonders.com/guides/greystone-quarry_uk_101054): Greystone Quarry, UK — renowned for dense, velvety dundasite on quartz and a micro-mineral suite from oxidised lead-zinc veins, highly prized by collectors. - [Grieswies, Austria Locality Guide](https://earthwonders.com/guides/grieswies_austria_101117): Grieswies, Austria: alpine quartz from a cleft-rich slope in the Rauris Valley; water-clear crystals with chlorite or rutile, plus euclase/phenakite allure. - [Grimsel area, Switzerland Locality Guide](https://earthwonders.com/guides/grimsel-area_switzerland_101249): Grimsel area, Switzerland — Alpine fissure quartz district with sharp quartz and pink fluorite; type locality for grimselite and baylissite, prized by collecto… - [Grisons, Switzerland Locality Guide](https://earthwonders.com/guides/grisons_switzerland_101308): Grisons, Switzerland: Alpine quartz varieties, milarite from Val Giuv, and manganese arsenates—classic localities prized by collectors for rarity and beauty. - [Grossular from Merelani Hills, Tanzania](https://earthwonders.com/guides/grossular_from_merelani-hills_tanzania_162307): Grossular from Merelani Hills, Tanzania - green tsavorite garnet with gem-quality, sharp crystals, bright luster, and Merelani morphology prized by collectors. - [Grossular from Ala Valley, Italy](https://earthwonders.com/guides/grossular_from_ala-valley_italy_3652): Grossular from Ala Valley, Italy — Alpine hessonite with red-orange crystals in rodingite, prized for color, Alpine locality history, and striking matrix. - [Grossular](https://earthwonders.com/guides/grossular): Grossular — calcium-aluminum garnet with emerald to tsavorite greens and hessonite oranges; dodecahedra/trapezohedra in skarns, prized for color and rarity. - [Grossular from Jeffrey Mine, Canada](https://earthwonders.com/guides/grossular_from_jeffrey-mine_canada_121627): Grossular from Jeffrey Mine, Canada - gemmy orange to pink garnet on diopside-bearing matrix, classic rodingite formation, prized for color and rarity. - [Grotta d’Oggi, null Locality Guide](https://earthwonders.com/guides/grotta-doggi_null_573296): A collector's guide to Grotta d’Oggi, null: its geology, mining history and notable minerals, illustrated with the 54 specimens documented from this locality on EarthWonders. - [Guanajuato, Mexico Locality Guide](https://earthwonders.com/guides/guanajuato_mexico_102240): Guanajuato, Mexico — iconic silver-gold vein district famed for acanthite, polybasite, native silver, and sculptural quartz-calcite textures prized by collecto… - [Guanajuato, Mexico Locality Guide](https://earthwonders.com/guides/guanajuato_mexico_102241): Guanajuato, Mexico — historic silver district famed for epithermal veins and cabinet-worthy minerals, including acanthite and pyrargyrite. - [Guangdong, China Locality Guide](https://earthwonders.com/guides/guangdong_china_102257): Guangdong, China — a mineral-rich locality noted for fluorite-quartz veins, green-to-purple octahedral fluorites, and notable copper and topaz finds at Shilu,… - [Guangxi, China Locality Guide](https://earthwonders.com/guides/guangxi_china_102273): A collector's guide to Guangxi, China: its geology, mining history and notable minerals, illustrated with the 39 specimens documented from this locality on EarthWonders. - [Guatomo Mine, null Locality Guide](https://earthwonders.com/guides/guatomo-mine_null_573265): Guatomo Mine, Thailand - famed for vivid yellow to orange mimetite crystals, lustrous and sharp, from a historic skarn Pb-Sn deposit; prized by collectors. - [Guerrero, Mexico Locality Guide](https://earthwonders.com/guides/guerrero_mexico_102496): Guerrero, Mexico — a premier ore province and the source of the famed Guerrero amethyst, with pocket amethyst quartz, phantoms, and strong collector appeal. - [Guerrero Mine, Mexico Locality Guide](https://earthwonders.com/guides/guerrero-mine_mexico_102499): Guerrero Mine, Mexico — Taxco collector locality known for blue barite blades, calcite and quartz, and rare sulfosalts; prized for the Taxco look and scarcity. - [Guichi District, China Locality Guide](https://earthwonders.com/guides/guichi-district_china_102551): Guichi District, China - famed for Liufengshan azurite over malachite, with vivid color contrasts and rare pocket-wall crystals prized by collectors. - [Guilin, China Locality Guide](https://earthwonders.com/guides/guilin_china_102606): A collector's guide to Guilin, China: its geology, mining history and notable minerals, illustrated with the 34 specimens documented from this locality on EarthWonders. - [Guizhou, China Locality Guide](https://earthwonders.com/guides/guizhou_china_102687): A collector's guide to Guizhou, China: its geology, mining history and notable minerals, illustrated with the 42 specimens documented from this locality on EarthWonders. - [Gyöngyösoroszi, Hungary Locality Guide](https://earthwonders.com/guides/gyngysoroszi_hungary_103416): Gyöngyösoroszi, Hungary — a classic polymetallic locality famed for pale to honey calcite, wurtzite, sphalerite and old-mine specimens prized by European colle… - [Gypsum](https://earthwonders.com/guides/gypsum): Gypsum - a diverse sulfate featuring selenite, satin spar, alabaster and desert roses; prized for clarity, dramatic twin forms, and collectible rarity. - [Gypsum from Naica Mine, Mexico](https://earthwonders.com/guides/gypsum_from_naica-mine_mexico_175534): Naica gypsum, Mexico - home to the Cave of Swords crystals; transparent to milky selenite blades, famed for colossal specimens and deep mining lore. - [Gypsum from Fuentes de Ebro, Spain](https://earthwonders.com/guides/gypsum_from_fuentes-de-ebro_spain_88663): Fuentes de Ebro gypsum - classic locality yielding water-clear, lustrous gypsum crystals on alabaster, with distinctive twinned blades prized by collectors. - [Gyudyurska mine, Bulgaria Locality Guide](https://earthwonders.com/guides/gyudyurska-mine_bulgaria_103537): Gyudyurska mine, Bulgaria: Rhodope locality producing galena, sphalerite, chalcopyrite, pyrite, quartz; prized for crisp pocket specimens and the Rhodope look. - [Habach valley, Austria Locality Guide](https://earthwonders.com/guides/habach-valley_austria_103573): Habach valley, Austria — historic emerald locality in metamorphic schists, yielding emeralds in dark mica-rich matrices, prized for history and color. - [Hachupa, null Locality Guide](https://earthwonders.com/guides/hachupa_null_573266): Hachupa, Pakistan - alpine-type cleft locality in the Shigar Valley, yielding epidote-group crystals and vesuvianite; prized for sharp green blades and alpine… - [Haddam, USA Locality Guide](https://earthwonders.com/guides/haddam_usa_103712): A collector's guide to Haddam, USA: its geology, mining history and notable minerals, illustrated with the 33 specimens documented from this locality on EarthWonders. - [Háje, Czech Republic Locality Guide](https://earthwonders.com/guides/hje_czech-republic_104054): Háje, Czech Republic — dyscrasite-silver calcite and native silver from the Příbram district; a classic yet modern type-locality for Sb-rich minerals and micro… - [Håkansbo Mines, Sweden Locality Guide](https://earthwonders.com/guides/hkansbo-mines_sweden_104082): Håkansbo Mines, Sweden — classic Bergslagen locality known for cobaltite and glaucodot crystals in sulphide ore, with historical merit and collector appeal. - [Halite](https://earthwonders.com/guides/halite): Halite - sharp cubic crystals with hopper forms, from colorless ice to pinks and purples; prized for look, color variety, and brine-lake localities. - [Halite from Wieliczka Mine, Poland](https://earthwonders.com/guides/halite_from_wieliczka-mine_poland_292148): Wieliczka Mine, Poland - halite from a historic European locality, famed for transparent to translucent cubes, old labels, and the Crystal Caves specimens. - [Halite from Searles Lake, California, USA](https://earthwonders.com/guides/halite_from_searles-lake_usa_231031): Searles Lake halite - pink to rose-red cubic crystals from a famed Mojave evaporite locality; prized for color, hopper morphology, translucency, and collecting. - [Halite from Staßfurt, Saxony-Anhalt, Germany](https://earthwonders.com/guides/halite_from_stafurt_germany_245377): Staßfurt halite — classic European salt crystals with blue internal zoning, sharp cubes, and historic evaporite geology; a collector's prize. - [Hallelujah Junction, USA Locality Guide](https://earthwonders.com/guides/hallelujah-junction_usa_196454): Hallelujah Junction — Nevada/California quartz locality known for scepter growth, smoky quartz with amethyst and citrine accents, prized architectural specimen… - [Halls Gap, USA Locality Guide](https://earthwonders.com/guides/halls-gap_usa_104421): Halls Gap, USA - classic Kentucky locality renowned for millerite-in-geode specimens; metallic needles in pale quartz/chalcedony geodes prized by collectors. - [Hanson Quarry, USA Locality Guide](https://earthwonders.com/guides/hanson-quarry_usa_573333): Hanson Quarry, USA - famed Midwestern locality for glassy celestine crystals in Devonian limestone, with calcite and rare strontianite; prized by collectors. - [Hardangervidda, Norway Locality Guide](https://earthwonders.com/guides/hardangervidda_norway_105471): A collector's guide to Hardangervidda, Norway: its geology, mining history and notable minerals, illustrated with the 88 specimens documented from this locality on EarthWonders. - [Hardin County, USA Locality Guide](https://earthwonders.com/guides/hardin-county_usa_105530): Hardin County, USA - a premier fluorite locality with lustrous yellow-to-honey cubes showing purple zoning, etched plates, and rich collector appeal. - [Hartenstein, Germany Locality Guide](https://earthwonders.com/guides/hartenstein_germany_106176): Hartenstein, Germany - historic uranium locality with pitchblende and coffinite in complex veins, Saxon whewellite twins, and UNESCO mining heritage. - [Harz, Germany Locality Guide](https://earthwonders.com/guides/harz_germany_106340): Harz, Germany - a mineral province yielding calcite varieties from St. Andreasberg, rare clausthalite, and dense sulfide ores; prized by collectors. - [Harz Mountains, Germany Locality Guide](https://earthwonders.com/guides/harz-mountains_germany_106349): Harz Mountains, Germany - historic ore province notable for St. Andreasberg deposits: pyrargyrite, dyscrasite, calcite, pink apophyllite, prized by collectors. - [Hashupa, Pakistan Locality Guide](https://earthwonders.com/guides/hashupa_pakistan_106397): Hashupa, Pakistan: alpine-type clefts in greenschist to epidote-amphibolite rocks yield long, lustrous epidote-group crystals with quartz; prized by collectors. - [Haskovo Province, Bulgaria Locality Guide](https://earthwonders.com/guides/haskovo-province_bulgaria_106416): Haskovo Province, Bulgaria: famed Madzharovo and Chala mine localities yield pyromorphite, ardaite, amethyst, quartz, pyrite and galena in the Rhodope district. - [Hausmannite from Wessels Mine, South Africa](https://earthwonders.com/guides/hausmannite_from_wessels-mine_south-africa_289263): Wessels Mine: classic hausmannite crystals, jet-black, mirror-bright and pagoda-like, from a premier Kalahari manganese locality prized by collectors. - [Hausmannite](https://earthwonders.com/guides/hausmannite): Hausmannite (Mn3O4): jet-black, metallic luster with sharp pseudo-octahedra. From South Africa’s Kalahari Manganese Field, prized for dramatic contrast. - [Hausmannite from N'Chwaning II Mine, South Africa](https://earthwonders.com/guides/hausmannite_from_nchwaning-ii-mine_south-africa_177163): Hausmannite from N'Chwaning II Mine, South Africa - jet-black, high-luster dipyramidal crystals, often pagoda-like, prized by collectors for locality and form. - [Haute Matsiatra, Madagascar Locality Guide](https://earthwonders.com/guides/haute-matsiatra_madagascar_106813): A collector's guide to Haute Matsiatra, Madagascar: its geology, mining history and notable minerals, illustrated with the 28 specimens documented from this locality on EarthWonders. - [Haut-Katanga, DR Congo Locality Guide](https://earthwonders.com/guides/haut-katanga_dr-congo_106842): Haut-Katanga, DR Congo — Katangan locality famed for malachite and chrysocolla, notable baryte associations, and Kipushi minerals with germanium and gallium. - [Heights Mine, UK Locality Guide](https://earthwonders.com/guides/heights-mine_uk_107796): Heights Mine, UK - a classic Weardale fluorite locality famed for glassy green cubic fluorite, strong twinning, and the old-Weardale glow prized by collectors. - [Heights Quarry, UK Locality Guide](https://earthwonders.com/guides/heights-quarry_uk_107797): Heights Quarry, UK - premier Weardale fluorite locality known for transparent emerald-green to purple crystals, twinned cubes, and blue daylight fluorescence. - [Heights Quarry, Weardale, null Locality Guide](https://earthwonders.com/guides/heights-quarry-weardale_null_573324): Heights Quarry, Weardale — fluorite from this Pennine classic yields emerald-to-sea-green twinned cubes on ironstone; purple fluorescence attracts collectors. - [Heißer Stein Mine, Germany Locality Guide](https://earthwonders.com/guides/heier-stein-mine_germany_107929): Heißer Stein Mine, Germany — Wölsendorf fluorite locality famed for sharp cubic crystals, strong zoning, and scarce collectible specimens. - [Heliodor](https://earthwonders.com/guides/heliodor): Heliodor - golden to greenish-yellow beryl with sharp prisms and etched forms, prized for color, clarity, and striking matrix displays from Erongo and Ukraine. - [Heliodor from Erongo Mountains, Namibia](https://earthwonders.com/guides/heliodor_from_erongo-mountains_namibia_78994): Erongo Mountains heliodor, Namibia — pocket-locality beryl on pegmatitic matrix, yellow to yellow-green crystals with glassy terminations, prized by collectors. - [Heliodor from Khoroshiv Raion, Ukraine](https://earthwonders.com/guides/heliodor_from_khoroshiv-raion_ukraine_129254): Heliodor from Khoroshiv, Ukraine — transparent yellow-green beryl with etched faces from Volyn pegmatites; famed for miarolitic pockets and collector value. - [Hematite from Fibbia, Switzerland](https://earthwonders.com/guides/hematite_from_fibbia_switzerland_83125): Hematite from Fibbia, Switzerland - Alpine iron-rose rosettes with mirror luster, a premier Swiss locality prized by collectors for its sculptural habit. - [Hematite from Egremont, Cumbria, England](https://earthwonders.com/guides/hematite_from_egremont_uk_75285): Egremont hematite, a finite Cumbrian classic from Florence Mine, featuring kidney ore and specularite, prized for luster, form variety, and historical value. - [Hematite from Rio Marina, Elba Island, Italy](https://earthwonders.com/guides/hematite_from_rio-marina_italy_214231): Rio Marina hematite, Elba Island — renowned for mirror-bright crystals (tabular, rhombohedral), iridescent varieties, and classic quartz–pyrite associations. - [Hematite](https://earthwonders.com/guides/hematite): Hematite: iron oxide with steel-gray to jet-black crystals and red earthy varieties; prized iron-rose rosettes and kidney ore, with a diagnostic red streak. - [Hematite from Cavradi Gorge, Switzerland](https://earthwonders.com/guides/hematite_from_cavradi-gorge_switzerland_44808): Cavradi Gorge hematite, Switzerland — Alpine locality famed for razor-sharp, mirror-luster plates with epitaxial rutile and quartz, highly prized by collectors. - [Hemimorphite from Wenshan Mine, Yunnan, China](https://earthwonders.com/guides/hemimorphite_from_wenshan-mine_china_289159): Hemimorphite from Wenshan Mine, Yunnan - blue, velvety skin on bubbly forms; a modern classic prized for intense color, translucence, and locality. - [Hemimorphite](https://earthwonders.com/guides/hemimorphite): Hemimorphite: hydrated zinc silicate with colorless blades and blue botryoids; forms in zinc-oxide zones, with famed localities and collector appeal. - [Hemimorphite from Santa Eulalia Mining District, Mexico](https://earthwonders.com/guides/hemimorphite_from_santa-eulalia-mining-district_mexico_227363): Hemimorphite — Santa Eulalia, Mexico: glassy, colorless to tinted sprays with sharp prismatic blades on gossan, prized for airy pockets and vivid luster. - [Hemimorphite from Ojuela Mine, Mexico](https://earthwonders.com/guides/hemimorphite_from_ojuela-mine_mexico_186119): Hemimorphite from the Ojuela Mine, Mexico — classic oxidized-zone crystals, glassy colorless to milky blades, and collector-focused quality factors. - [Henan, China Locality Guide](https://earthwonders.com/guides/henan_china_108325): Henan, China — Minggang fluorite (violet/blue botryoidal forms) makes it notable, with type-localities like tongbaite and weishanite, a strong draw for collect… - [Henderson No. 2 mine, Canada Locality Guide](https://earthwonders.com/guides/henderson-no-2-mine_canada_573182): Henderson No. 2 Mine, Canada — classic cubanite locality in the Chibougamau camp; brass-yellow crystals on calcite, benchmark specimens with finite supply. - [Herderite](https://earthwonders.com/guides/herderite): Herderite: CaBe phosphate; rare with hydroxylherderite, prized for wedge terminations, vitreous luster, and lavender hues, connoisseur appeal. - [Herja Mine, Romania Locality Guide](https://earthwonders.com/guides/herja-mine_romania_108882): Herja Mine, Romania — Baia Mare district locality famous for stibnite sprays, black calcite, semseyite rosettes, and sulfosalt-rich vugs, a collector's classic. - [Herkimer County, USA Locality Guide](https://earthwonders.com/guides/herkimer-county_usa_108885): Herkimer County, USA - famed for Herkimer diamonds, doubly terminated quartz from Little Falls Dolostone; prized for exceptional clarity, vug pockets, and Amer… - [Herodsfoot Mine, UK Locality Guide](https://earthwonders.com/guides/herodsfoot-mine_uk_109030): Herodsfoot Mine, UK: historic Cornish locality yielding bournonite and tetrahedrite on quartz; classic cabinet pieces prized by collectors. - [Herrerías, Spain Locality Guide](https://earthwonders.com/guides/herreras_spain_109067): Herrerías, Spain: renowned native-silver locality with filiform, dendritic and arborescent silver, mercury-rich forms, chlorargyrite, in an iron-barite matrix. - [Hesse, Germany Locality Guide](https://earthwonders.com/guides/hesse_germany_109203): Hesse, Germany locality guide - diverse mining districts (Taunus, Lahn-Dill, Bieber, Richelsdorf) yielding pyromorphite, calcite, and rare secondary minerals f… - [Heulandite](https://earthwonders.com/guides/heulandite): Heulandite — wedge-shaped, pastel crystals formed in basalt vesicles; prized for aesthetics, variety, and accessible price, with Indian and Icelandic material. - [Heulandite from Nashik District, India](https://earthwonders.com/guides/heulandite_from_nashik-district_india_176406): Heulandite — lustrous bladed to tabular crystals with pearly sheen in peach, pink, or green-included colors; forms in Deccan Traps vesicles, Nashik District. - [Heulandite from Jalgaon District, India](https://earthwonders.com/guides/heulandite_from_jalgaon-district_india_120652): Jalgaon District, India - Heulandite from Savda/Sawda quarries prized for luster, sculptural crystals, peach-to-pink colors, and Deccan Trap paragenesis. - [Hexigten Banner, China Locality Guide](https://earthwonders.com/guides/hexigten-banner_china_569249): Hexigten Banner, Inner Mongolia: premier mineral-specimen locality with fluorite, ilvaite, arsenopyrite, scheelite; Huanggang skarn and rare borates. - [Hezhou, China Locality Guide](https://earthwonders.com/guides/hezhou_china_109393): Hezhou, China — a premier locality for crystallized scorodite in a pyrite-rich gossan, with minerals of Guangxi’s Nanling belt; prized for sharp, lustrous crys… - [Hezhou, null Locality Guide](https://earthwonders.com/guides/hezhou_null_573253): A collector's guide to Hezhou, null: its geology, mining history and notable minerals, illustrated with the 39 specimens documented from this locality on EarthWonders. - [Hiddenite, null Locality Guide](https://earthwonders.com/guides/hiddenite_null_573297): Hiddenite, North Carolina — rare American locality yielding emerald-green hiddenite (spodumene) with quartz pockets and prized matrix pieces for collectors. - [High-Atlas Mountains, Morocco Locality Guide](https://earthwonders.com/guides/high-atlas-mountains_morocco_109814): High Atlas Mountains, Morocco — renowned locality for quartz-lined basalt geodes, agates and chalcedony nodules, calcite and fluorite. - [Hilarion Mine, Greece Locality Guide](https://earthwonders.com/guides/hilarion-mine_greece_110228): Hilarion Mine, Greece - Lavrion-area locality yielding adamite, smithsonite, aragonite and rare arsenates; prized for blue-green hues and precise labeling. - [Hill-Ledford Mine, USA Locality Guide](https://earthwonders.com/guides/hill-ledford-mine_usa_110336): A collector's guide to Hill-Ledford Mine, USA: its geology, mining history and notable minerals, illustrated with the 44 specimens documented from this locality on EarthWonders. - [Hilton Mine, UK Locality Guide](https://earthwonders.com/guides/hilton-mine_uk_110561): Hilton Mine, UK — classic North Pennines locality famed for lemon-to-honey yellow fluorite cubes, often twinned with baryte; a coveted site for collectors. - [Himachal Pradesh, India Locality Guide](https://earthwonders.com/guides/himachal-pradesh_india_110588): Himachal Pradesh, India — Himalayan quartz from Kullu Valley, glassy colorless to smoky crystals with chlorite, rutile and anatase; prized pocket minerals. - [Himalaya Mine, USA Locality Guide](https://earthwonders.com/guides/himalaya-mine_usa_110589): Himalaya Mine, USA — classic tourmaline pegmatite in San Diego County; famed for vivid elbaite crystals and rare-element minerals prized by collectors. - [Himmelsfürst Mine, Germany Locality Guide](https://earthwonders.com/guides/himmelsfrst-mine_germany_110615): Himmelsfürst Mine, Germany - classic Erzgebirge silver locality with native silver, argyrodite; historic mining, and collector appeal. - [Hiriart Mountain, USA Locality Guide](https://earthwonders.com/guides/hiriart-mountain_usa_110826): Hiriart Mountain, USA - historic pegmatite locality and birthplace of kunzite; prized for pastel pink-to-lilac spodumene crystals and rare-element pockets. - [Hodruša-Hámre mines, Slovakia Locality Guide](https://earthwonders.com/guides/hodrua-hmre-mines_slovakia_111275): Hodruša-Hámre, Slovakia — historic Miocene ore district famed for Ag–Au sulfosalts, Rozália vein minerals, and the hodrušite type locality; a premier source fo… - [Holbrook Extension, USA Locality Guide](https://earthwonders.com/guides/holbrook-extension_usa_111703): Holbrook Extension, USA - Bisbee-area locality known for azurite, malachite, cuprite and other oxidation copper minerals, prized for its Bisbee-era color, rari… - [Holloway Quarry, USA Locality Guide](https://earthwonders.com/guides/holloway-quarry_usa_111925): Holloway Quarry, USA — premier celestine locality in SE Michigan, yielding gray-blue tabular crystals with amber calcite; prized for cabinet-worthy specimens. - [Hongda Mine, China Locality Guide](https://earthwonders.com/guides/hongda-mine_china_112494): Hongda Mine, China: a premier silver locality with acanthite and native silver wires, dramatic cabinet specimens, and notable rarity for modern collectors. - [Hongxizhen Mining Area, China Locality Guide](https://earthwonders.com/guides/hongxizhen-mining-area_china_112590): Hongxizhen Mining Area, China — Meigu basalt locality yielding babingtonite, prehnite, quartz, and epidote; prized for sculptural cavities and collector appeal. - [Hope's Nose, UK Locality Guide](https://earthwonders.com/guides/hopes-nose_uk_112948): Hope's Nose, UK - a protected coastal locality famed for dendritic native gold in calcite, including palladian gold and rare selenide assemblages, prized by co… - [Hopkinton, USA Locality Guide](https://earthwonders.com/guides/hopkinton_usa_113011): Hopkinton, USA — Diamond Hill yields amethyst scepters in milky quartz; finite production, well documented, and prized by major collections. - [Horní Slavkov, Czech Republic Locality Guide](https://earthwonders.com/guides/horn-slavkov_czech-republic_113255): Horní Slavkov, Czech Republic — a classic Bohemian locality known for tin-tungsten greisen districts, with cassiterite, fluorite, quartz, and strong collecting… - [Hotazel, South Africa Locality Guide](https://earthwonders.com/guides/hotazel_south-africa_113702): Hotazel, South Africa — renowned Kalahari manganese locality known for deep-pink rhodochrosite on black manganite, rich paragenesis, and collector appeal. - [Hot Springs, USA Locality Guide](https://earthwonders.com/guides/hot-springs_usa_113758): Hot Springs, USA - a Ouachita quartz locality famed for rock crystals, sculptural clusters, and wavellite varieties, prized by collectors for color and form. - [Houghton County, USA Locality Guide](https://earthwonders.com/guides/houghton-county_usa_113840): Houghton County, USA — a premier copper ore and mineral-specimen locality on Michigan’s Keweenaw, noted for native copper forms, silver, and calcite. - [Huairou District, China Locality Guide](https://earthwonders.com/guides/huairou-district_china_114345): Huairou District, China — a key fluorite locality known as Beijing fluorite, producing honey-yellow to golden-amber cubes on white matrix, with blue phantoms. - [Huanggang Mine, China Locality Guide](https://earthwonders.com/guides/huanggang-mine_china_114410): A collector's guide to Huanggang Mine, China: its geology, mining history and notable minerals, illustrated with the 761 specimens documented from this locality on EarthWonders. - [Huanuni mine, Bolivia Locality Guide](https://earthwonders.com/guides/huanuni-mine_bolivia_114496): Huanuni mine, Bolivia — classic collector locality in the Tin Belt, prized for vivid green ludlamite, blue-green vivianite, rare phosphates, and cassiterite. - [Huanzala Mine, Peru Locality Guide](https://earthwonders.com/guides/huanzala-mine_peru_114500): Huanzala Mine, Peru — a defining locality for cabinet pyrite, yielding brassy cubes with fluorite octahedra, sphalerite, and sculptural, collectible specimens. - [Huanzala, Peru Locality Guide](https://earthwonders.com/guides/huanzala_peru_114499): Huanzala, Peru — famed Andean locality yielding brassy pyrite, green-to-pink fluorite, and rhodonite; prized for aesthetic variety and collector-historical val… - [Huarón mine, Peru Locality Guide](https://earthwonders.com/guides/huarn-mine_peru_114524): Huarón mine, Peru — a premier locality for collectors, known for pyrite cubes on quartz, with sphalerite and chalcopyrite and striking color contrasts. - [Huayllapon Mine, Peru Locality Guide](https://earthwonders.com/guides/huayllapon-mine_peru_114557): Huayllapon Mine, Peru — renowned for lustrous hübnerite blades, deep red rhodochrosite on quartz, and open-pocket specimens that captivate collectors. - [Huayllay District, Peru Locality Guide](https://earthwonders.com/guides/huayllay-district_peru_566265): A collector's guide to Huayllay District, Peru: its geology, mining history and notable minerals, illustrated with the 74 specimens documented from this locality on EarthWonders. - [Hunan, China Locality Guide](https://earthwonders.com/guides/hunan_china_115211): Hunan, China - Nanling belt mining province producing striking fluorite, quartz, calcite and antimony at Yaogangxian and Xikuangshan; highly prized by collecto… - [Hunza District, Pakistan Locality Guide](https://earthwonders.com/guides/hunza-district_pakistan_115430): Hunza District, Pakistan - marble-hosted ruby and sapphire specimens, plus aquamarine and fluorite from pegmatites; a storied locality prized by collectors. - [Husky Mine, Canada Locality Guide](https://earthwonders.com/guides/husky-mine_canada_115604): Husky Mine, Yukon — famed for iridescent polybasite and stephanite crystals, rare sulfosalt pockets, and a storied silver camp highlight for collectors. - [Ibitiara, Brazil Locality Guide](https://earthwonders.com/guides/ibitiara_brazil_573312): Ibitiara, Brazil: Bahia locality famed for rutilated quartz and rutile-on-hematite, featuring golden rutile sprays and hematite plates prized by collectors. - [Ichinokawa Mine, Japan Locality Guide](https://earthwonders.com/guides/ichinokawa-mine_japan_116079): Ichinokawa Mine, Japan — historic antimony locality renowned for dramatic stibnite prisms, old provenance labels, and enduring collecting appeal. - [Idaho, USA Locality Guide](https://earthwonders.com/guides/idaho_usa_116138): A collector's guide to Idaho, USA: its geology, mining history and notable minerals, illustrated with the 47 specimens documented from this locality on EarthWonders. - [Idarado Mine, USA Locality Guide](https://earthwonders.com/guides/idarado-mine_usa_116287): Idarado Mine, USA — San Juan locality famed for cabinet-grade calcite, quartz, sulfides, and rare telluride/fluorite in a massive historic vein system. - [Idar-Oberstein, Germany Locality Guide](https://earthwonders.com/guides/idar-oberstein_germany_569723): Idar-Oberstein, Germany — Europe’s classic agate-and-quartz locality, yielding agate, jasper, rock crystal, smoky quartz and amethyst; prized for provenance an… - [Ihovitra, Madagascar Locality Guide](https://earthwonders.com/guides/ihovitra_madagascar_573251): Ihovitra, Madagascar — a small quartz locality famed for colorless to milky crystals with mint-green fuchsite phantoms, prized for ghostly interiors and Itremo… - [Ilfeld, Germany Locality Guide](https://earthwonders.com/guides/ilfeld_germany_116736): Ilfeld, Germany — historic manganese locality in the Harz famed for jet-black manganite crystals, ribbed prisms and open-pocket habits; essential for collector… - [Ilha claim, Brazil Locality Guide](https://earthwonders.com/guides/ilha-claim_brazil_116745): A collector's guide to Ilha claim, Brazil: its geology, mining history and notable minerals, illustrated with the 142 specimens documented from this locality on EarthWonders. - [Illinois-Kentucky Fluorspar District, USA Locality Guide](https://earthwonders.com/guides/illinois-kentucky-fluorspar-district_usa_116822): Illinois-Kentucky Fluorspar District, USA — historic fluorite belt known for color-zoned, glassy cubes with calcite and sphalerite; prized Denton-style specime… - [Illinois, USA Locality Guide](https://earthwonders.com/guides/illinois_usa_116805): Illinois, USA: a diverse locality producing fluorite, calcite, galena, sphalerite, and pyrite, famed for Cave-in-Rock specimens and historic fluorspar mining. - [Ilvaite](https://earthwonders.com/guides/ilvaite): Ilvaite: black sorosilicate with sharp, glossy prisms and metallic sheen; forms in iron-rich skarns with quartz and calcite; Elba, Dalnegorsk. - [Ilvaite from Dalnegorsk, Russia](https://earthwonders.com/guides/ilvaite_from_dalnegorsk_russia_63378): Dalnegorsk, Russia - ilvaite from this famed district features sharply prismatic black crystals in complex skarn matrices, prized for contrast and locality app… - [Ilvaite from Huanggang Mine, Inner Mongolia, China](https://earthwonders.com/guides/ilvaite_from_huanggang-mine_china_114410): Ilvaite - jet-black prismatic crystals from Huanggang Mine, Inner Mongolia, a modern, major skarn source; dramatic contrast with quartz and up to 20 cm. - [Ilvaite from Nikolaevskiy Mine, Dalnegorsk, Russia](https://earthwonders.com/guides/ilvaite_from_nikolaevskiy-mine_russia_180214): Ilvaite from Nikolaevskiy Mine, Dalnegorsk, Russia - glossy black prisms with sharp terminations on pale matrix, prized for luster and collector appeal. - [Imilchil Cercle, Morocco Locality Guide](https://earthwonders.com/guides/imilchil-cercle_morocco_117008): Imilchil Cercle, Morocco — High Atlas locality for titanite, prehnite, fluorapatite, rutile, and magnetite; prized for vivid textures and a label history. - [Imiter mine, Morocco Locality Guide](https://earthwonders.com/guides/imiter-mine_morocco_117015): A collector's guide to Imiter mine, Morocco: its geology, mining history and notable minerals, illustrated with the 228 specimens documented from this locality on EarthWonders. - [Imiter Silver Mine, null Locality Guide](https://earthwonders.com/guides/imiter-silver-mine_null_573276): Imiter Silver Mine, Morocco — a major primary silver deposit in the Anti-Atlas, yielding acanthite, proustite, native silver and other prized silver minerals. - [Inca de Oro mining district, Chile Locality Guide](https://earthwonders.com/guides/inca-de-oro-mining-district_chile_117187): Inca de Oro mining district, Chile — famed for szenicsite as the type locality and vivid copper–molybdate minerals, with Atacama-style cabinet specimens. - [India Locality Guide](https://earthwonders.com/guides/india_77): India Deccan Traps basalts yield peach stilbite, green apophyllite, cavansite, powellite; famed for large cabinet-quality specimens and deep collector heritage. - [Indicolite from Pederneira Mine, Brazil](https://earthwonders.com/guides/indicolite_from_pederneira-mine_brazil_194601): Indicolite from the Pederneira Mine, Brazil - glassy blue tourmaline prized for sharp terminations, vibrant color range, and pocket-grown specimen forms. - [Indicolite](https://earthwonders.com/guides/indicolite): Indicolite: blue tourmaline with saturated hues, strong pleochroism, and sharp, lustrous prisms; prized for color, rarity, and dramatic matrix crystals. - [Indicolite from Pala Mining District, San Diego, USA](https://earthwonders.com/guides/indicolite_from_pala-mining-district_usa_191689): Pala Mining District, San Diego, USA — indicolite blue elbaite tourmaline famed for color zoning, pocket-rich pegmatites, and collector-grade rarity. - [Indonesia Locality Guide](https://earthwonders.com/guides/indonesia_78): Indonesia — a vast island-arc locality with vivid grape agate and drusy quartz; copper-gold districts; prized for tropical-arc rarity and collector appeal. - [Inesite from Wessels Mine, South Africa](https://earthwonders.com/guides/inesite_from_wessels-mine_south-africa_289263): Inesite from Wessels Mine, South Africa - red to salmon-pink translucent blades in fans and drusy plates; prized for color, variety, and the Kalahari locality. - [Inesite from Broken Hill, Australia](https://earthwonders.com/guides/inesite_from_broken-hill_australia_34725): Inesite from Broken Hill, Australia - classic manganese-silicate with rose-red to orange-brown sprays, crisp radial crystals, and strong collecting provenance. - [Inesite](https://earthwonders.com/guides/inesite): Inesite: salmon-pink radiating crystals on white host, prized for color, luster, and sculptural form; notable localities include Kalahari, Broken Hill, Långban. - [Inesite from N’Chwaning Mines, South Africa](https://earthwonders.com/guides/inesite_from_nchwaning-mines_south-africa_177165): Inesite from N’Chwaning Mines, South Africa — distinctive manganese silicate with rose to orange-red blades and sprays, prized by collectors. - [Infiernillos Mine, Bolivia Locality Guide](https://earthwonders.com/guides/infiernillos-mine_bolivia_117710): Infiernillos Mine, Bolivia — Potosí silver-tin locality famed for cassiterite, native silver, bournonite and rare phosphophyllites, prized by collectors. - [Ingrid mine, null Locality Guide](https://earthwonders.com/guides/ingrid-mine_null_573275): Ingrid Mine, a new Mozambican collector locality famed for chrysoberyl on quartz matrix; limited production, sharp yellow-green crystals, and growing rarity. - [Inner Mongolia, China Locality Guide](https://earthwonders.com/guides/inner-mongolia_china_117897): Inner Mongolia, China - key locality for mineral specimens, notably Huanggang skarn with blue-purple fluorite on quartz, magnetite, and cassiterite; prized for… - [Inspiration Mine area, USA Locality Guide](https://earthwonders.com/guides/inspiration-mine-area_usa_117962): Inspiration Mine, USA - historic skarn copper locality famed for blue kinoite on apophyllite, with chrysocolla and malachite, prized by collectors. - [Iran Locality Guide](https://earthwonders.com/guides/iran_79): Iran, a national-scale mineral province with Neyshabur turquoise, Nakhlak cerussite, rare iranite and talmessite, and multiple localities prized by collectors. - [Ireland Locality Guide](https://earthwonders.com/guides/ireland_81): Ireland — renowned for Irish-type Zn-Pb deposits, yielding galena, sphalerite, baryte and azurite; prized by collectors for distinctive locality character. - [Itaguaçu, Brazil Locality Guide](https://earthwonders.com/guides/itaguau_brazil_119538): Itaguaçu, Brazil: chrysoberyl locality known for sculptural yellow-green to olive-green twins, especially sixlings; secondary deposits and collector appeal. - [Italy Locality Guide](https://earthwonders.com/guides/italy_84): A collector's guide to Italy: its geology, mining history and notable minerals, illustrated with the 88 specimens documented from this locality on EarthWonders. - [Itauz Mine, Kazakhstan Locality Guide](https://earthwonders.com/guides/itauz-mine_kazakhstan_573243): Itauz Mine, Kazakhstan — a classic locality for sculptural native copper, cuprite and malachite, famed for airy, patinated formations and collector appeal. - [Itinga, Brazil Locality Guide](https://earthwonders.com/guides/itinga_brazil_119629): Itinga, Brazil — a classic pegmatite locality yielding Li, Be, Nb, Cs minerals; prized elbaite, lepidolite rosettes, topaz, and historic type localities. - [Itos Mine, Bolivia Locality Guide](https://earthwonders.com/guides/itos-mine_bolivia_119645): Itos Mine, Bolivia — a classic sulfosalt locality known for franckeite and zinkenite, with dark, architectural specimens and striking needle-like crystals. - [Ivigtut Mine, Denmark Locality Guide](https://earthwonders.com/guides/ivigtut-mine_denmark_119761): Ivigtut Mine, Greenland — type locality for cryolite, with icy-white translucent crystals amid siderite and aluminofluorides; prized for history and locality. - [Jáchymov ore district, Czech Republic Locality Guide](https://earthwonders.com/guides/jchymov-ore-district_czech-republic_120074): A collector's guide to Jáchymov ore district, Czech Republic: its geology, mining history and notable minerals, illustrated with the 62 specimens documented from this locality on EarthWonders. - [Jacksons Crossroads, USA Locality Guide](https://earthwonders.com/guides/jacksons-crossroads_usa_120342): A collector's guide to Jacksons Crossroads, USA: its geology, mining history and notable minerals, illustrated with the 84 specimens documented from this locality on EarthWonders. - [Jaguaraçu, Brazil Locality Guide](https://earthwonders.com/guides/jaguarau_brazil_120518): Jaguaraçu, Brazil - famed for milarite crystals and rare Be-Y-REE minerals, late-stage cavities, Alpine-like pocket assemblages, and strong collector appeal. - [Jaimina Mine, Spain Locality Guide](https://earthwonders.com/guides/jaimina-mine_spain_120553): Jaimina Mine, Spain - Asturias fluorite locality known for glassy colorless to lilac crystals on barite, with sculptural edges and collectible rarity. - [Jalgaon District, India Locality Guide](https://earthwonders.com/guides/jalgaon-district_india_120652): Jalgaon District, India - a premier Deccan Traps locality yielding striking zeolites from basalt cavities, including stilbite, heulandite, and apophyllite. - [Jalgaon, India Locality Guide](https://earthwonders.com/guides/jalgaon_india_574706): A collector's guide to Jalgaon, India: its geology, mining history and notable minerals, illustrated with the 74 specimens documented from this locality on EarthWonders. - [Jaquetô mine, Brazil Locality Guide](https://earthwonders.com/guides/jaquet-mine_brazil_120977): Jaquetô mine, Brazil - famed gem pegmatite producing aquamarine and beryl with blue-green color; prized by collectors for etched barrel crystals and provenance. - [Jardinera No. 1 Mine, null Locality Guide](https://earthwonders.com/guides/jardinera-no-1-mine_null_573305): A collector's guide to Jardinera No. 1 Mine, null: its geology, mining history and notable minerals, illustrated with the 24 specimens documented from this locality on EarthWonders. - [Jean Baptiste Mine, Greece Locality Guide](https://earthwonders.com/guides/jean-baptiste-mine_greece_121420): Jean Baptiste Mine, Greece — Lavrion district widely known for smithsonite and azurite/malachite, with ktenasite as a type locality, highly prized by collector… - [Jebel Ouichane, Morocco Locality Guide](https://earthwonders.com/guides/jebel-ouichane_morocco_121489): Jebel Ouichane, Morocco — famous for blue barite crystals from open-space sulfates in a late iron-skarn system; crisp blades, large size, prized by collectors. - [Jefferson County, USA Locality Guide](https://earthwonders.com/guides/jefferson-county_usa_121580): Jefferson County, USA - a mineral province with pyrite fossil hybrids, North Table Mountain zeolites, and South Platte NYF pegmatites, prized by collectors. - [Jefferson County, USA Locality Guide](https://earthwonders.com/guides/jefferson-county_usa_566133): Jefferson County, USA - Montana locality renowned for quartz, amethyst, and rare tellurides; notable mines include PC Mine and Little Gem. - [Jeffrey Mine, Canada Locality Guide](https://earthwonders.com/guides/jeffrey-mine_canada_121627): Jeffrey Mine, Canada — storied locality for Ca-silicates from rodingite seams, yielding gemmy orange grossular and vesuvianite; prized by serious collectors. - [Jeffrey Quarry, null Locality Guide](https://earthwonders.com/guides/jeffrey-quarry_null_573306): A collector's guide to Jeffrey Quarry, null: its geology, mining history and notable minerals, illustrated with the 24 specimens documented from this locality on EarthWonders. - [Jegdalek ruby deposit, Afghanistan Locality Guide](https://earthwonders.com/guides/jegdalek-ruby-deposit_afghanistan_121638): Jegdalek ruby deposit, Afghanistan - historic marble-hosted ruby locality yielding vivid red corundum; prized by collectors for sharp crystals and provenance. - [Jenipapo mine, Brazil Locality Guide](https://earthwonders.com/guides/jenipapo-mine_brazil_121720): Jenipapo mine, Brazil — pegmatite locality famed for kosnarite crystals, honey-yellow to beige on albite, with a rare-phosphate assemblage prized by collectors. - [Jeremejevite from Ameib Farm 60, Namibia](https://earthwonders.com/guides/jeremejevite_from_ameib-farm-60_namibia_6864): Jeremejevite from Ameib Farm 60, Namibia: blue-to-colorless, slender hexagonal prisms with glassy luster from a key Erongo locality that fascinates collectors. - [Jeremejevite from Erongo Mountains, Namibia](https://earthwonders.com/guides/jeremejevite_from_erongo-mountains_namibia_78994): Jeremejevite - blue hexagonal prisms from Namibia’s Erongo Mountains; a rare, pleochroic borate with color zoning and terminations prized by collectors. - [Jeremejevite](https://earthwonders.com/guides/jeremejevite): Jeremejevite — exceptionally rare aluminum borate prized for gemmy sky-blue to colorless prisms with sharp terminations; Namibian Erongo pegmatites set the ben… - [Jiangxi, China Locality Guide](https://earthwonders.com/guides/jiangxi_china_571559): Jiangxi, China locality guide: diverse ore systems yield fluorite, stibnite, scheelite, and cassiterite; prized for architectural crystals and rare specimen st… - [Jianshan Mine, China Locality Guide](https://earthwonders.com/guides/jianshan-mine_china_122324): A collector's guide to Jianshan Mine, China: its geology, mining history and notable minerals, illustrated with the 54 specimens documented from this locality on EarthWonders. - [Jinkouhe District, China Locality Guide](https://earthwonders.com/guides/jinkouhe-district_china_568571): Jinkouhe District, China — quartz-barite crystals with colorless to smoky quartz and barite; Dawashan Mn-deposit minerals add rarity, a prime locality for stri… - [Jinlong Hill, China Locality Guide](https://earthwonders.com/guides/jinlong-hill_china_122696): A collector's guide to Jinlong Hill, China: its geology, mining history and notable minerals, illustrated with the 216 specimens documented from this locality on EarthWonders. - [Johanngeorgenstadt, Germany Locality Guide](https://earthwonders.com/guides/johanngeorgenstadt_germany_123144): Johanngeorgenstadt, Germany - historic Erzgebirge locality for silver-uranium ores and mimetite type locality, with rare nickel arsenates. - [Jonas Mine, Brazil Locality Guide](https://earthwonders.com/guides/jonas-mine_brazil_123656): A collector's guide to Jonas Mine, Brazil: its geology, mining history and notable minerals, illustrated with the 243 specimens documented from this locality on EarthWonders. - [Joplin Field, USA Locality Guide](https://earthwonders.com/guides/joplin-field_usa_123826): Joplin Field, USA, Missouri heart of the Tri-State lead-zinc district; famed for layered galena-sphalerite specimens with calcite, dolomite, and marcasite. - [Joplin, USA Locality Guide](https://earthwonders.com/guides/joplin_usa_123823): Joplin, USA is a premier Tri-State zinc-lead locality yielding ruby-jack sphalerite, galena, dolomite, and calcite; prized for large, cabinet pieces. - [Jos Plateau, Nigeria Locality Guide](https://earthwonders.com/guides/jos-plateau_nigeria_124034): A collector's guide to Jos Plateau, Nigeria: its geology, mining history and notable minerals, illustrated with the 147 specimens documented from this locality on EarthWonders. - [Judkins Quarry, UK Locality Guide](https://earthwonders.com/guides/judkins-quarry_uk_124359): Judkins Quarry, UK - pivotal British locality yielding calcite and baryte crystals, dark sulfides, and the type-locality wooldridgeite, prized by collectors. - [Julcani Mine, Peru Locality Guide](https://earthwonders.com/guides/julcani-mine_peru_124416): Julcani Mine, Peru — a high-Andean polymetallic silver district famed for metallic sulfides and sulfosalts, especially enargite blades and arsenopyrite. - [Kabwe Mine (Broken Hill Mine), null Locality Guide](https://earthwonders.com/guides/kabwe-mine-broken-hill-mine_null_573285): A collector's guide to Kabwe Mine (Broken Hill Mine), null: its geology, mining history and notable minerals, illustrated with the 36 specimens documented from this locality on EarthWonders. - [Kabwe Mine, Zambia Locality Guide](https://earthwonders.com/guides/kabwe-mine_zambia_125128): A collector's guide to Kabwe Mine, Zambia: its geology, mining history and notable minerals, illustrated with the 58 specimens documented from this locality on EarthWonders. - [Kagem Emerald Mine, Zambia Locality Guide](https://earthwonders.com/guides/kagem-emerald-mine_zambia_125237): Kagem Emerald Mine, Zambia — a premier locality yielding saturated green emeralds on quartz, with distinctive African specimens from schist-hosted deposits. - [Kakamunurle Mine, India Locality Guide](https://earthwonders.com/guides/kakamunurle-mine_india_125434): Kakamunurle Mine, India — sculptural scepter and reverse-scepter quartz amethyst from Karur belt; prized for crisp terminations, violet zoning, and miniatures. - [Kakanda deposit, DR Congo Locality Guide](https://earthwonders.com/guides/kakanda-deposit_dr-congo_125435): A collector's guide to Kakanda deposit, DR Congo: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [Kalahari Manganese Fields, South Africa Locality Guide](https://earthwonders.com/guides/kalahari-manganese-fields_south-africa_573319): Kalahari Manganese Fields, South Africa - famed locality for dramatic manganese specimens, including rhodochrosite on black manganite, hematite, hausmannite. - [Kamariza Mines, Greece Locality Guide](https://earthwonders.com/guides/kamariza-mines_greece_125842): A collector's guide to Kamariza Mines, Greece: its geology, mining history and notable minerals, illustrated with the 97 specimens documented from this locality on EarthWonders. - [Kambove, DR Congo Locality Guide](https://earthwonders.com/guides/kambove_dr-congo_125860): Kambove, DR Congo — historic copper-cobalt locality on the Katanga Belt, known for malachite, plancheite, chrysocolla, barite on malachite, and prized cabinet… - [Kami Mine, Bolivia Locality Guide](https://earthwonders.com/guides/kami-mine_bolivia_125985): A collector's guide to Kami Mine, Bolivia: its geology, mining history and notable minerals, illustrated with the 33 specimens documented from this locality on EarthWonders. - [Kamoya South II Mine, DR Congo Locality Guide](https://earthwonders.com/guides/kamoya-south-ii-mine_dr-congo_126062): Kamoya South II Mine, DR Congo - a premier locality for carrollite, producing mirror-bright thiospinels on white carbonate; prized by collectors for contrast,… - [Kangjiawan Pb-Zn-Ag-Au deposit, China Locality Guide](https://earthwonders.com/guides/kangjiawan-pb-zn-ag-au-deposit_china_126285): A collector's guide to Kangjiawan Pb-Zn-Ag-Au deposit, China: its geology, mining history and notable minerals, illustrated with the 31 specimens documented from this locality on EarthWonders. - [Kaokoveld Plateau, Namibia Locality Guide](https://earthwonders.com/guides/kaokoveld-plateau_namibia_126444): Kaokoveld Plateau, Namibia — a classic copper-mineral locality known for vivid dioptase and shattuckite, unique desert matrix, and strong collecting appeal. - [Kara-Oba W deposit, Kazakhstan Locality Guide](https://earthwonders.com/guides/kara-oba-w-deposit_kazakhstan_126702): Kara-Oba W deposit, Kazakhstan - a renowned greisen locality producing wolframite and fluorite, with smoky quartz and octahedral fluorite prized by collectors. - [Karas Region, Namibia Locality Guide](https://earthwonders.com/guides/karas-region_namibia_566380): Karas Region, Namibia — a collector-focused locality highlighting Rosh Pinah and Skorpion zinc districts, Ysterputs blue lace agate, and hematite-included quar… - [Karlovy Vary Region, Czech Republic Locality Guide](https://earthwonders.com/guides/karlovy-vary-region_czech-republic_571479): Karlovy Vary Region, Czech Republic locality guide — historic mining area known for cassiterite, uraninite, and iconic Jáchymov labels prized by collectors. - [Karur District, India Locality Guide](https://earthwonders.com/guides/karur-district_india_568794): Karur District, India — quartz locality famous for hematite-phantom and amethyst-overgrown crystals, with Kattumunnur Mines specimens prized by collectors. - [Katanga Copper Crescent, DR Congo Locality Guide](https://earthwonders.com/guides/katanga-copper-crescent_dr-congo_127140): Katanga Copper Crescent, DR Congo — renowned malachite locality in the copper-cobalt belt; cabinet-grade forms and velvety botryoidal textures. - [Katanga, DR Congo Locality Guide](https://earthwonders.com/guides/katanga_dr-congo_127139): Katanga, DR Congo — historic copper-cobalt province famed for velvety malachite, electric chrysocolla, and rare cobalt minerals; top locality for collectors. - [Katlang, Pakistan Locality Guide](https://earthwonders.com/guides/katlang_pakistan_127254): Katlang, Pakistan: distinctive pink-to-violet-pink topaz from Ghundao Hill, colored by chromium in carbonate-rich veins; prized by collectors despite preservat… - [Kautenbach Mine, Germany Locality Guide](https://earthwonders.com/guides/kautenbach-mine_germany_127403): Kautenbach Mine, Germany — renowned locality for pyromorphite-bearing galena (Blaubleierz), gray-blue pseudomorphs with rare textures, valued by collectors. - [Kavalerovo mining district, Russia Locality Guide](https://earthwonders.com/guides/kavalerovo-mining-district_russia_570769): Kavalerovo mining district, Russia: a premier tin-ore region notable for fluorite, quartz, calcite and a rich collecting scene; striking color contrast. - [Kavanayen, Venezuela Locality Guide](https://earthwonders.com/guides/kavanayen_venezuela_573192): A collector's guide to Kavanayen, Venezuela: its geology, mining history and notable minerals, illustrated with the 21 specimens documented from this locality on EarthWonders. - [Kayes Region, Mali Locality Guide](https://earthwonders.com/guides/kayes-region_mali_127521): Kayes Region, Mali — a notable collector locality famed for Mali garnet and prehnite-epidote skarns, with Diakon and Bendougou diggings prized by collectors. - [Kearsarge Mine, USA Locality Guide](https://earthwonders.com/guides/kearsarge-mine_usa_127624): Kearsarge Mine, USA: a Lake Superior copper locality famed for native copper and notable native silver, prehnite-lined vugs, and striking crystalline silver fo… - [Keeley-Frontier Mine, Canada Locality Guide](https://earthwonders.com/guides/keeley-frontier-mine_canada_127718): Keeley-Frontier Mine, Canada: premier Silver Centre locality producing silver; oxidized veins yield native silver and sulfosalts, with rare chapmanite. - [Kellogg, USA Locality Guide](https://earthwonders.com/guides/kellogg_usa_127921): Kellogg, USA - a premier collector locality at the western Coeur d’Alene district, famed for orange and yellow pyromorphite, cerussite, and mining history. - [Kelly Mine, USA Locality Guide](https://earthwonders.com/guides/kelly-mine_usa_127969): Kelly Mine, USA – premier New Mexico locality for zinc–lead–silver ore and blue to apple-green smithsonite, with notable secondary minerals for collectors. - [Kenticha mine, Kenticha pegmatite field, Sidamo-Borana Province, null Locality Guide](https://earthwonders.com/guides/kenticha-mine-kenticha-pegmatite-field-sidamo-borana-province_null_573325): Kenticha mine, Ethiopia — a renowned rare-element LCT pegmatite yielding tantalum and lithium, with vivid amazonite crystals highly prized by collectors. - [Kenticha, null Locality Guide](https://earthwonders.com/guides/kenticha_null_573288): Kenticha, Ethiopia — a rare-element pegmatite locality yielding emeralds and amazonite; zoned crystals with mica inclusions, prized by collectors. - [Kerch Peninsula, Ukraine Locality Guide](https://earthwonders.com/guides/kerch-peninsula_ukraine_128455): A collector's guide to Kerch Peninsula, Ukraine: its geology, mining history and notable minerals, illustrated with the 27 specimens documented from this locality on EarthWonders. - [Kerr Mcgee Section 17 Mine, USA Locality Guide](https://earthwonders.com/guides/kerr-mcgee-section-17-mine_usa_128620): Kerr McGee Section 17 Mine - cobalt-blue halite in sylvite-rich ore from the Carlsbad evaporite district; a restricted locality prized by collectors. - [Kerrouchene, null Locality Guide](https://earthwonders.com/guides/kerrouchene_null_573282): Kerrouchene, Morocco — a copper‑carbonate locality yielding azurite and malachite, prized for sharp thumbnails and strong historical collector appeal. - [Keweenaw County, USA Locality Guide](https://earthwonders.com/guides/keweenaw-county_usa_128806): Keweenaw County, USA - native copper and silver from the Lake Superior district, with sculptural copper crystals and mineral associations for collectors. - [Keweenaw Peninsula, USA Locality Guide](https://earthwonders.com/guides/keweenaw-peninsula_usa_128808): A collector's guide to Keweenaw Peninsula, USA: its geology, mining history and notable minerals, illustrated with the 209 specimens documented from this locality on EarthWonders. - [Kharan District, Pakistan Locality Guide](https://earthwonders.com/guides/kharan-district_pakistan_129083): Kharan District, Pakistan — brookite on quartz with red-brown to fiery orange blades, phantom zoning, and large Alpine-style crystals prized by collectors. - [Khoroshiv Raion (Volodarsk-Volynskii), Ukraine Locality Guide](https://earthwonders.com/guides/khoroshiv-raion-volodarsk-volynskii_ukraine_129254): Khoroshiv Raion, Ukraine - Volyn pegmatite locality famed for heliodor yellow beryl and topaz; giant gemmy chambers yield crystals prized by collectors. - [Khyber Pakhtunkhwa Province, Pakistan Locality Guide](https://earthwonders.com/guides/khyber-pakhtunkhwa-province_pakistan_129350): A collector's guide to Khyber Pakhtunkhwa Province, Pakistan: its geology, mining history and notable minerals, illustrated with the 57 specimens documented from this locality on EarthWonders. - [Killa Saifullah, Pakistan Locality Guide](https://earthwonders.com/guides/killa-saifullah_pakistan_129620): A collector's guide to Killa Saifullah, Pakistan: its geology, mining history and notable minerals, illustrated with the 98 specimens documented from this locality on EarthWonders. - [Kimbedi, Republic of the Congo Locality Guide](https://earthwonders.com/guides/kimbedi_republic-of-the-congo_129712): Kimbedi, Republic of the Congo — a premier dioptase locality with emerald-green crystals from the Kimbanga prospects, often on plancheite, prized by collectors. - [King County, USA Locality Guide](https://earthwonders.com/guides/king-county_usa_129885): King County, USA, renowned quartz localities around Snoqualmie Pass, featuring sceptered quartz, amethyst, hematite-included raspberries, and rare skarn pocket… - [Klein Spitzkopje Granite Stock, Namibia Locality Guide](https://earthwonders.com/guides/klein-spitzkopje-granite-stock_namibia_131131): Klein Spitzkopje Granite Stock, Namibia — historic topaz locality famed for glassy colorless to pale blue/yellow crystals, often with smoky quartz and feldspar. - [Kohnstein Quarry, Germany Locality Guide](https://earthwonders.com/guides/kohnstein-quarry_germany_131919): Kohnstein Quarry, Germany — a distinctive European collector locality for evaporites, famed for hydroboracite on anhydrite and a diverse borate suite. - [Kokcha Valley, Afghanistan Locality Guide](https://earthwonders.com/guides/kokcha-valley_afghanistan_131960): Kokcha Valley, Afghanistan — lapis lazuli locality with Sar-e-Sang workings yielding royal-blue crystals and associated minerals prized by collectors. - [Kola Peninsula, Russia Locality Guide](https://earthwonders.com/guides/kola-peninsula_russia_132030): Kola Peninsula, Russia — mineral locality with alkali-rich eudialyte-bearing nepheline-syenites, iconic Khibiny/Lovozero finds, and rare peralkaline minerals p… - [Kolwezi, DR Congo Locality Guide](https://earthwonders.com/guides/kolwezi_dr-congo_570609): A collector's guide to Kolwezi, DR Congo: its geology, mining history and notable minerals, illustrated with the 156 specimens documented from this locality on EarthWonders. - [Kombat Mine, Namibia Locality Guide](https://earthwonders.com/guides/kombat-mine_namibia_132208): Kombat Mine, Namibia — renowned for sharp cerussite twins and rare red nambulite among Cu-Pb-Ag ores and Fe-Mn minerals, a standout for collectors. - [Kongsberg, Norway Locality Guide](https://earthwonders.com/guides/kongsberg_norway_132317): Kongsberg, Norway — premier native-silver locality famed for wire silver in Precambrian gneiss veins, diverse sulfoselenides and arsenides, and a rich mining h… - [Kongsberg silver mining district, Norway Locality Guide](https://earthwonders.com/guides/kongsberg-silver-mining-district_norway_132318): Kongsberg silver mining district, Norway - premier native-silver locality, famed for wire-form silver in calcite veins and rich paragenesis for collectors. - [Konso, null Locality Guide](https://earthwonders.com/guides/konso_null_573257): Konso, Ethiopia - amazonite from granitic pegmatites near Konso; blue-green, blocky twinned crystals on feldspar, a modern collector's classic and scarce. - [Kopasz Hill andesite quarry, Hungary Locality Guide](https://earthwonders.com/guides/kopasz-hill-andesite-quarry_hungary_132530): A collector's guide to Kopasz Hill andesite quarry, Hungary: its geology, mining history and notable minerals, illustrated with the 93 specimens documented from this locality on EarthWonders. - [Kop Krom Mine, Türkiye Locality Guide](https://earthwonders.com/guides/kop-krom-mine_trkiye_573207): Kop Krom Mine, Türkiye - famed for chromium-rich kämmererite (electric magenta-to-violet clinochlore) on chromite, with historic pockets prized by collectors. - [Kosovo Locality Guide](https://earthwonders.com/guides/kosovo_132836): A collector's guide to Kosovo: its geology, mining history and notable minerals, illustrated with the 25 specimens documented from this locality on EarthWonders. - [Kounrad Massif, Kazakhstan Locality Guide](https://earthwonders.com/guides/kounrad-massif_kazakhstan_133015): Kounrad Massif, Kazakhstan — bertrandite with rhodochrosite and smoky quartz, plus rare display specimens; collectors prize its limited production window. - [Kouri 1 diggings, Mali Locality Guide](https://earthwonders.com/guides/kouri-1-diggings_mali_133020): Kouri 1 diggings, Mali — a West African locality known for sharp melanite-rich andradite garnets, amber cores, and green prehnite with epidote associations. - [Krushev dol Mine, Bulgaria Locality Guide](https://earthwonders.com/guides/krushev-dol-mine_bulgaria_133760): A collector's guide to Krushev dol Mine, Bulgaria: its geology, mining history and notable minerals, illustrated with the 312 specimens documented from this locality on EarthWonders. - [Kunar, Afghanistan Locality Guide](https://earthwonders.com/guides/kunar_afghanistan_134173): Kunar, Afghanistan — Dara-e-Pech pegmatites, a Nuristan district yielding kunzite, elbaite, morganite, aquamarine and rare crystals prized by collectors. - [Kunzite from Mawi Pegmatite, Nuristan, Afghanistan](https://earthwonders.com/guides/kunzite_from_mawi-pegmatite_afghanistan_159560): Kunzite — from Mawi Pegmatite, Nuristan: large, lustrous pink to purple spodumene crystals with strong pleochroism, color zoning, and high collecting value. - [Kunzite](https://earthwonders.com/guides/kunzite): Kunzite: pink to lilac spodumene with strong pleochroism, glassy crystals on white matrix; prized for color, clarity, and localities like Pala and Nuristan. - [Kunzite from Pala Mining District, San Diego County, USA](https://earthwonders.com/guides/kunzite_from_pala-mining-district_usa_191689): Kunzite from Pala Mining District, San Diego County — lavender to pink bladed crystals, rare historic locality material, and prized collecting quality. - [Kuruktag Mountains, China Locality Guide](https://earthwonders.com/guides/kuruktag-mountains_china_134473): A collector's guide to Kuruktag Mountains, China: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Kyanite](https://earthwonders.com/guides/kyanite): Kyanite - aluminum silicate with sapphire-blue blades and pleochroism; forms in metamorphic rocks and yields gemmy prisms or blade clusters, prized for color. - [Kyaukme District, Myanmar Locality Guide](https://earthwonders.com/guides/kyaukme-district_myanmar_134806): Kyaukme District, Myanmar — a top locality for Palelni mushroom tourmalines and pegmatites, noted for vivid color, sculptural habit, and collecting appeal. - [La Barre Mine, France Locality Guide](https://earthwonders.com/guides/la-barre-mine_france_135080): La Barre Mine, France — a classic fluorite locality in Massif Central, celebrated for blue cubes with yellow cores and phantom bands, prized by collectors. - [La Cabaña, Spain Locality Guide](https://earthwonders.com/guides/la-cabaa_spain_135308): La Cabaña, Spain — renowned Berbes fluorite locality famed for purple cubic crystals on white baryte, with zoning, translucence, and strong collecting appeal. - [La Collada mining area, Spain Locality Guide](https://earthwonders.com/guides/la-collada-mining-area_spain_135715): La Collada, Spain — Asturian fluorite locality famed for blue to violet cubic crystals on calcite, satin to glassy faces, and prized pocket specimens for colle… - [Ladjuar Medam, Afghanistan Locality Guide](https://earthwonders.com/guides/ladjuar-medam_afghanistan_135935): A collector's guide to Ladjuar Medam, Afghanistan: its geology, mining history and notable minerals, illustrated with the 80 specimens documented from this locality on EarthWonders. - [Lady Annabella Mine, UK Locality Guide](https://earthwonders.com/guides/lady-annabella-mine_uk_135992): Lady Annabella Mine, UK — a premier Weardale fluorite locality with pocket-rich cavities, cubic crystals, and daylight-fluorescent colors from green to purple. - [Ladywash Mine, UK Locality Guide](https://earthwonders.com/guides/ladywash-mine_uk_136150): Ladywash Mine, UK - Derbyshire locality famed for distinctive post-war fluorite and calcite specimens with marcasite and sphalerite, prized by collectors. - [La Facciata quarry, Carrara, Italy Locality Guide](https://earthwonders.com/guides/la-facciata-quarry-carrara_italy_573326): La Facciata quarry, Carrara, Italy — a classic collector locality with marble geodes featuring sphalerite, wurtzite, quartz, calcite, fluorite, and sulfides. - [La Gardette Mine, France Locality Guide](https://earthwonders.com/guides/la-gardette-mine_france_136401): La Gardette Mine, France — Alpine quartz locality famed for long, glassy prisms in the Dauphiné habit; prized architectural crystals and collecting appeal. - [Laghman, Afghanistan Locality Guide](https://earthwonders.com/guides/laghman_afghanistan_136474): Laghman, Afghanistan: famed collector locality for gem spodumene (kunzite) and elbaite tourmaline, plus morganite and quartz from high-grade pegmatites. - [Lake George area, USA Locality Guide](https://earthwonders.com/guides/lake-george-area_usa_137119): A collector's guide to Lake George area, USA: its geology, mining history and notable minerals, illustrated with the 78 specimens documented from this locality on EarthWonders. - [Lake George, USA Locality Guide](https://earthwonders.com/guides/lake-george_usa_137113): Lake George, Colorado — classic miarolitic pegmatite district yielding blue-green amazonite and smoky quartz; prized for its status and rare intact crystals. - [Lake Superior Mine, USA Locality Guide](https://earthwonders.com/guides/lake-superior-mine_usa_137371): Lake Superior Mine, USA locality guide: native copper and silver from Keweenaw fissure veins, famed arborescent copper forms and rare minerals. - [Laman celestine deposit, Afghanistan Locality Guide](https://earthwonders.com/guides/laman-celestine-deposit_afghanistan_137682): Laman celestine deposit, Afghanistan - blue, sharp, glassy Celestine crystals on Calcite druse in limestone; a new Afghan locality with collecting appeal. - [La Marina Mine, Colombia Locality Guide](https://earthwonders.com/guides/la-marina-mine_colombia_137707): La Marina Mine, Colombia — a notable locality yielding blue euclase, pink fluorapatite, and calcite on albite; prized for compact, cabinet-grade specimens. - [La Minilla mine, null Locality Guide](https://earthwonders.com/guides/la-minilla-mine_null_573256): La Minilla mine, Extremadura — a notable collector locality yielding vivid blue plumbogummite botryoidal crusts on pale matrix, with rare supergene phosphates. - [La Morita Mine, Mexico Locality Guide](https://earthwonders.com/guides/la-morita-mine_mexico_137931): La Morita Mine, Mexico — a defining wulfenite locality renowned for glassy orange tabular crystals on barite with mimetite accents, prized by collectors. - [Landsberg, Germany Locality Guide](https://earthwonders.com/guides/landsberg_germany_138261): Landsberg, Germany — a historic mercury locality yielding cinnabar, native mercury, calomel, and rare amalgams; Moschellandsbergite is its signature for collec… - [Lane & Son Traprock quarries, USA Locality Guide](https://earthwonders.com/guides/lane-son-traprock-quarries_usa_138347): Lane & Son Traprock quarries, USA, Massachusetts locality famed for jet-black babingtonite on pale green prehnite, datolite, calcite, and quartz. - [Långban Mine, Sweden Locality Guide](https://earthwonders.com/guides/lngban-mine_sweden_138426): A collector's guide to Långban Mine, Sweden: its geology, mining history and notable minerals, illustrated with the 39 specimens documented from this locality on EarthWonders. - [Laohuan Mine, China Locality Guide](https://earthwonders.com/guides/laohuan-mine_china_138862): A collector's guide to Laohuan Mine, China: its geology, mining history and notable minerals, illustrated with the 88 specimens documented from this locality on EarthWonders. - [La Paz County, USA Locality Guide](https://earthwonders.com/guides/la-paz-county_usa_138985): La Paz County, USA — famed for Red Cloud wulfenite and North Geronimo vanadinite, with fluorescent calcite and fluorite; a prize for collectors. - [La Pita Mine, Colombia Locality Guide](https://earthwonders.com/guides/la-pita-mine_colombia_139091): La Pita Mine, Colombia — western emerald belt locality producing velvety green emeralds on calcite matrix, with rare accessory minerals like parisite-(Ce) and… - [Larkin's Quarry, Ireland Locality Guide](https://earthwonders.com/guides/larkins-quarry_ireland_139409): Larkin's Quarry, Ireland — renowned fluorite locality with vivid purple-to-blue cubes, zoned interiors and Celtic-cross habits, prized by serious collectors. - [Las Cruces Mine, Spain Locality Guide](https://earthwonders.com/guides/las-cruces-mine_spain_139720): A collector's guide to Las Cruces Mine, Spain: its geology, mining history and notable minerals, illustrated with the 136 specimens documented from this locality on EarthWonders. - [La Sirena Mine, Mexico Locality Guide](https://earthwonders.com/guides/la-sirena-mine_mexico_139796): La Sirena Mine, Mexico, Guanajuato locality famed for distorted acanthite crystals, aguilarite, amethyst crusts, and pyrite in quartz–calcite. - [Las Vigas de Ramírez Municipality, Mexico Locality Guide](https://earthwonders.com/guides/las-vigas-de-ramrez-municipality_mexico_140211): Las Vigas de Ramírez, Mexico - renowned amethyst locality with slender, glassy quartz crystals from Piedra Parada; prized for open clusters and sculptural form. - [Lavender Pit, USA Locality Guide](https://earthwonders.com/guides/lavender-pit_usa_140803): Lavender Pit, Bisbee, Arizona - a copper-porphyry locality famed for azurite and malachite, copper sulfides, and rare secondary minerals coveted by collectors. - [La Viesca Mine, Spain Locality Guide](https://earthwonders.com/guides/la-viesca-mine_spain_140881): La Viesca Mine, Spain - part of the Asturian fluorite belt; blue to lilac fluorite on quartz, renowned pockets and collector rarity. - [Lavrion Mining District, Greece Locality Guide](https://earthwonders.com/guides/lavrion-mining-district_greece_140973): Lavrion Mining District, Greece - renowned for blue-green smithsonite botryoids, adamite, azurite, fluorite, and rich paragenesis that attracts serious collect… - [Laxey Mine, USA Locality Guide](https://earthwonders.com/guides/laxey-mine_usa_141083): Laxey Mine, USA — a key South Mountain locality yielding sharp ilvaite on quartz with historic skarn; prized by collectors for large, lustrous crystals. - [Lazulite](https://earthwonders.com/guides/lazulite): Lazulite - vivid blue phosphate with sharp prisms; azure to indigo color, scarce, with the Yukon and Graves Mountain localities prized by collectors. - [Lazulite from Graves Mountain, Georgia, USA](https://earthwonders.com/guides/lazulite_from_graves-mountain_usa_99725): Graves Mountain lazulite, Georgia — classic blue lazulite in quartz–kyanite rock; saturated color, sharp crystals, and a storied locality prized by collectors. - [Leadhills, UK Locality Guide](https://earthwonders.com/guides/leadhills_uk_141271): Leadhills, UK — historic lead-zinc locality in Scotland famed as a type locality for minerals like leadhillite, lanarkite, caledonite; prized by collectors. - [Le Beix Mine, France Locality Guide](https://earthwonders.com/guides/le-beix-mine_france_141494): Le Beix Mine, France: renowned for blue fluorite crystals, sharp cubes and rare octahedra on quartz, historic mine significance, prized by collectors. - [Le Bourg-d'Oisans, France Locality Guide](https://earthwonders.com/guides/le-bourg-doisans_france_141564): A collector's guide to Le Bourg-d'Oisans, France: its geology, mining history and notable minerals, illustrated with the 42 specimens documented from this locality on EarthWonders. - [Le Burg Mine, France Locality Guide](https://earthwonders.com/guides/le-burg-mine_france_141598): Le Burg Mine, France — famed modern fluorite locality producing sky-blue to deep blue cubic fluorite on quartz, with brassy gangue and copper-mining history. - [Lechang Mine, null Locality Guide](https://earthwonders.com/guides/lechang-mine_null_573307): Lechang Mine, Guangdong — renowned for quartz–hematite specimens with a China classic look, and with sphalerite, galena and pyrite; a notable collector localit… - [Legrandite from Flor de Peña Mine, Mexico](https://earthwonders.com/guides/legrandite_from_flor-de-pea-mine_mexico_84590): Legrandite from Flor de Peña Mine, Mexico — type locality; golden-yellow prismatic crystals, rosettes in oxidized zinc ore, prized for pedigree. - [Legrandite from Ojuela Mine, Mexico](https://earthwonders.com/guides/legrandite_from_ojuela-mine_mexico_186119): Legrandite from Ojuela Mine, Mexico - lemon to orange-yellow sprays of glassy crystals in oxidized zinc-arsenate zones; prized for color and form. - [Legrandite from Ojuela Mine](https://earthwonders.com/guides/legrandite-from_ojuela-mine_mexico_186119): Ojuela Mine, Durango, Mexico - famed locality yielding legrandite and other rare minerals; prized for vibrant crystals and collecting appeal. - [Legrandite](https://earthwonders.com/guides/legrandite): Legrandite - luminous lemon-yellow crystals with radiating sprays and glassy luster; rare, fragile, and prized from premier Mexican localities like Ojuela. - [Leiping Mine, China Locality Guide](https://earthwonders.com/guides/leiping-mine_china_142369): A collector's guide to Leiping Mine, China: its geology, mining history and notable minerals, illustrated with the 63 specimens documented from this locality on EarthWonders. - [Lengenbach Quarry, Switzerland Locality Guide](https://earthwonders.com/guides/lengenbach-quarry_switzerland_142787): Lengenbach Quarry, Switzerland — renowned type locality in white dolomite, hosting arsenic-rich sulfosalts and micromounts of realgar, pyrite, and sphalerite. - [Leonard Mine, USA Locality Guide](https://earthwonders.com/guides/leonard-mine_usa_142936): Leonard Mine, USA — historic Butte copper locality famed for covellite, enargite, pyrite on quartz, and rare copper-sulfide specimens prized by collectors. - [Lepidolite from Jonas Mine, Brazil](https://earthwonders.com/guides/lepidolite_from_jonas-mine_brazil_123656): Lepidolite from Jonas Mine, Brazil - prized for sharp lilac mica books in a rubellite-rich pocket, with Jonas provenance and strong collector value. - [Lepidolite](https://earthwonders.com/guides/lepidolite): Lepidolite - lilac-purple mica from granitic pegmatites, forming rosettes and ball clusters with silky luster; prized for color, form, and collecting appeal. - [Lepidolite from Cruzeiro Mine, Brazil](https://earthwonders.com/guides/lepidolite_from_cruzeiro-mine_brazil_61348): Cruzeiro Mine lepidolite - lavender lilac lithium mica from a famed Minas Gerais pegmatite, a locality signature prized with tourmaline for collectors. - [Lepidolite from Pala Mining District, USA](https://earthwonders.com/guides/lepidolite_from_pala-mining-district_usa_191689): Lepidolite from the Pala Mining District is one of the classic faces of Southern California pegmatite collecting: lilac, lavender, bluish gray, and deep purple lithium mica sparkling around pink tourm... - [Lepidolite from Paprok, Afghanistan](https://earthwonders.com/guides/lepidolite_from_paprok_afghanistan_192559): Paprok lepidolite: lavender-to-pink mica forming pearly plates in a lithium pegmatite with tourmaline and quartz; prized for authentic Paprok assemblages. - [Lepidolite from Pederneira Mine, Brazil](https://earthwonders.com/guides/lepidolite_from_pederneira-mine_brazil_194601): Lepidolite from Pederneira Mine, Brazil — lavender to pink mica in sparkling rosettes with elbaite tourmaline; Keké’s Pocket and vivid combination specimens. - [Les Dalles Mine, Morocco Locality Guide](https://earthwonders.com/guides/les-dalles-mine_morocco_143488): Les Dalles Mine, Morocco - key Mibladen locality famed for baryte and galena, with pale smoky cerussite twins on baryte and orange wulfenite on galena. - [Les Droites, France Locality Guide](https://earthwonders.com/guides/les-droites_france_143499): Les Droites, France — alpine locality famed for pink to rose fluorite octahedra on smoky quartz, prized for delicate mountaintop specimens and collector appeal. - [Les Farges Mine, France Locality Guide](https://earthwonders.com/guides/les-farges-mine_france_143547): Les Farges Mine, France — renowned lead–pyromorphite locality, producing green to mustard-tipped barrel pyromorphites on baryte and quartz, highly collectible. - [Les Malines District, France Locality Guide](https://earthwonders.com/guides/les-malines-district_france_143666): Les Malines District, France — a renowned Pb-Zn locality in the Cévennes, yielding bournonite cogwheels, barite rosettes, and sphalerite, prized by collectors. - [L'Etoile du Congo Mine, DR Congo Locality Guide](https://earthwonders.com/guides/letoile-du-congo-mine_dr-congo_144038): L'Etoile du Congo Mine, DR Congo — a classic Katanga locality known for cornetite, malachite, and chrysocolla; notable oxide-cap specimens and blue-green druse… - [Levant Mine, UK Locality Guide](https://earthwonders.com/guides/levant-mine_uk_144192): Levant Mine, UK - renowned locality for crystallized chalcocite (black, sharp twins) on quartz; classic Cornish mining history and an undersea lode setting. - [Libethenite from Phoenix United Mine, Cornwall, UK](https://earthwonders.com/guides/libethenite_from_phoenix-united-mine_uk_197190): Libethenite from Phoenix United Mine, Cornwall — dark bottle-green copper phosphate crystals with lustrous pseudo-octahedral forms and Cornish provenance. - [Libethenite](https://earthwonders.com/guides/libethenite): Libethenite: striking bottle-green copper phosphate with sharp, glassy crystals; prized for rarity and top localities like Tsumeb and Shinkolobwe. - [Libethenite from Nchanga Mine, Zambia](https://earthwonders.com/guides/libethenite_from_nchanga-mine_zambia_177156): Libethenite from Nchanga Mine, Zambia — dense drusy green dipyramids on copper matrix with malachite; notable for texture and historic Copperbelt collecting ap… - [Libethenite from Ľubietová, Slovakia](https://earthwonders.com/guides/libethenite_from_ubietov_slovakia_572717): Libethenite from Ľubietová, Slovakia — a type-locality specimen with sharp pseudo-octahedral crystals, preserved cavities, and classic collector appeal. - [Liddicoatite from Madagascar](https://earthwonders.com/guides/liddicoatite_from_madagascar_102): Liddicoatite - cross-sectional tourmaline with star bands and a rainbow palette; Madagascar’s Anjanabonoina source; prized by collectors for form and labeling. - [Liddicoatite](https://earthwonders.com/guides/liddicoatite): Liddicoatite: calcium-dominant tourmaline with kaleidoscopic color zoning and triangular pinwheel patterns; prized as complete crystals from Madagascar. - [Liguria, Italy Locality Guide](https://earthwonders.com/guides/liguria_italy_145121): A collector's guide to Liguria, Italy: its geology, mining history and notable minerals, illustrated with the 28 specimens documented from this locality on EarthWonders. - [Lime Ridge, USA Locality Guide](https://earthwonders.com/guides/lime-ridge_usa_573057): Lime Ridge, USA - renowned wavellite locality in Devonian sandstone, with calcite, fluorite, celestine; prized for color contrast and pocket richness. - [Limonite](https://earthwonders.com/guides/limonite): Limonite - earthy iron oxides famed for textured boxworks and pseudomorphs after pyrite; sculptural stalactites and historic localities attract collectors. - [Limpopo, South Africa Locality Guide](https://earthwonders.com/guides/limpopo_south-africa_145763): Limpopo, South Africa — a trio of collector worlds: Palabora blue brucite and baddeleyite, Murchison antimony and stibnite, and Bushveld Pt-group minerals. - [Linarite from Grand Reef Mine, USA](https://earthwonders.com/guides/linarite_from_grand-reef-mine_usa_98848): Linarite - electric blue crystals from Grand Reef Mine, Arizona: sharp, tabular prismatic forms in quartz-lined cavities, famed for color, size, and locality. - [Linarite from Tsumeb, Namibia](https://earthwonders.com/guides/linarite_from_tsumeb_namibia_261664): Tsumeb linarite: electric blue blades on cerussite or malachite, a rare locality-specific connoisseur mineral prized by collectors for its contrast and history. - [Linarite](https://earthwonders.com/guides/linarite): Linarite - vivid azure-blue prismatic crystals from oxidized PbCu deposits; prized for color, luster, and provenance from Arizona, Greece, and Namibia. - [Linarite from Mammoth-Saint Anthony Mine, USA](https://earthwonders.com/guides/linarite_from_mammoth-saint-anthony-mine_usa_155478): Mammoth-Saint Anthony Mine, Tiger, Arizona — noted locality for electric azure linarite blades; a premier secondary-lead ore assemblage prized by collectors. - [Linarite from Red Gill Mine, England](https://earthwonders.com/guides/linarite_from_red-gill-mine_uk_210727): Red Gill Mine, England — famed for deep azure-blue linarite with sharp crystals, its historic attribution and status as a key British locality for collectors. - [Lincoln County, null Locality Guide](https://earthwonders.com/guides/lincoln-county_null_145822): Lincoln County, New Mexico — Smoky quartz from Sierra Blanca with phantoms and large prisms, plus Capitan Mountains Japan-law twins, prized by collectors. - [Linópolis, Brazil Locality Guide](https://earthwonders.com/guides/linpolis_brazil_146152): Linópolis, Brazil — phosphate-rich pegmatites yielding brazilianite, scorzalite, and souzalite; Córrego Frio and Telírio mines produce brazilianite on muscovit… - [Little Pipestone Mining District, USA Locality Guide](https://earthwonders.com/guides/little-pipestone-mining-district_usa_147242): Little Pipestone Mining District, Montana - a quiet locality famed for amethyst and smoky quartz scepters and tourmalinated crystals; museum-grade pockets. - [Little Three Mine, USA Locality Guide](https://earthwonders.com/guides/little-three-mine_usa_147408): A collector's guide to Little Three Mine, USA: its geology, mining history and notable minerals, illustrated with the 332 specimens documented from this locality on EarthWonders. - [Liufengshan Mine, null Locality Guide](https://earthwonders.com/guides/liufengshan-mine_null_573269): Liufengshan Mine, premier Chinese locality for azurite–malachite, yields lustrous blue druses with vivid green malachite; prized for texture, polish, and colle… - [Live Oak pit, USA Locality Guide](https://earthwonders.com/guides/live-oak-pit_usa_147602): Live Oak pit, Arizona - signature locality for blue-green chrysocolla with malachite and azurite, often with quartz; prized for vivid color and pocket textures. - [Llallagua, Bolivia Locality Guide](https://earthwonders.com/guides/llallagua_bolivia_147785): Llallagua, Bolivia — a premier tin locality in the Andes, yielding jet-black cassiterite, quartz, rare sulfosalts, and a phosphate suite prized by collectors. - [Llamas Quarry, Spain Locality Guide](https://earthwonders.com/guides/llamas-quarry_spain_147790): Llamas Quarry, Spain - a small Asturian locality yielding water-clear fluorite cubes in pale lilac to colorless hues, prized for crisp bevels and strong collec… - [Llano County, USA Locality Guide](https://earthwonders.com/guides/llano-county_usa_147840): Llano County, USA - famed for rare-earth pegmatites at Baringer Hill and diverse quartz, fluorite, topaz and gadolinite specimens; rugged, collectible appeal. - [Lohning quarry, Austria Locality Guide](https://earthwonders.com/guides/lohning-quarry_austria_148406): Lohning quarry, Austria — a classic Rauris locality for rare minerals; tiny crystals of aeschynite-(Y), xenotime-(Y), brookite, and monazite on pale matrix. - [Loliondo, Tanzania Locality Guide](https://earthwonders.com/guides/loliondo_tanzania_148513): Loliondo, Tanzania — renowned for orange spessartine garnets from Nani Hill and rare orange kyanite; manganese-rich metamorphic locality with distinctive cryst… - [Londonite](https://earthwonders.com/guides/londonite): Londonite — cesium-dominant borate with sharp trapezohedra, colorless to pale lemon, a rare mineral from Madagascar and Afghanistan prized by collectors. - [Longyan, China Locality Guide](https://earthwonders.com/guides/longyan_china_149434): Longyan, China - a mineral district famed for pale to canary-yellow calcite on dark limestone, clear drusy quartz, and blue-violet fluorite crystals prized by… - [Los Lamentos Mts, Mexico Locality Guide](https://earthwonders.com/guides/los-lamentos-mts_mexico_149945): Los Lamentos, Mexico — famed wulfenite from the Erupción-Ahumada system; orange-to-caramel crystals on calcite, a district classic prized by collectors. - [Lowell (Eden Mills), USA Locality Guide](https://earthwonders.com/guides/lowell-eden-mills_usa_573248): A collector's guide to Lowell (Eden Mills), USA: its geology, mining history and notable minerals, illustrated with the 38 specimens documented from this locality on EarthWonders. - [Lower Saxony, Germany Locality Guide](https://earthwonders.com/guides/lower-saxony_germany_151024): Lower Saxony, Germany - a premier mineral province led by Rammelsberg and St Andreasberg, home to silver-base-metal ore and unique type-locality minerals. - [Lualaba, DR Congo Locality Guide](https://earthwonders.com/guides/lualaba_dr-congo_151218): Lualaba, DR Congo — renowned copper-cobalt locality with native copper, cuprite on chrysocolla, malachite, cobalt carbonates, and rare uranyl minerals. - [Ľubietová, Slovakia Locality Guide](https://earthwonders.com/guides/ubietov_slovakia_572717): Ľubietová, Slovakia — old copper locality and Libethenite’s type locality; famed for euchroite, pseudomalachite, malachite, and classic European specimens. - [Lubin, Poland Locality Guide](https://earthwonders.com/guides/lubin_poland_151281): Lubin, Poland - copper-silver Kupferschiefer deposit; yields pale green cubic halite, green gypsum, and malachite, highly sought by collectors. - [Luc Yen Mine, Vietnam Locality Guide](https://earthwonders.com/guides/luc-yen-mine_vietnam_151936): Luc Yen Mine, Vietnam — a gem locality producing ruby, spinel, pargasite and tourmaline in marble, known for vivid color contrasts and cobalt-blue spinel. - [Ludlamite](https://earthwonders.com/guides/ludlamite): Ludlamite: vivid emerald-green crystals with glassy luster; prized for color, rarity, and localities like Huanggang, Huanuni, Huanzala for collecting value. - [Ludlamite from Huanuni Mine, Bolivia](https://earthwonders.com/guides/ludlamite_from_huanuni-mine_bolivia_114496): Huanuni Ludlamite — Bolivia: premier locality yielding lustrous green architectural crystals on matrix, with vivianite and pyrite, prized by collectors. - [Lupoto Mine, DR Congo Locality Guide](https://earthwonders.com/guides/lupoto-mine_dr-congo_152473): A collector's guide to Lupoto Mine, DR Congo: its geology, mining history and notable minerals, illustrated with the 39 specimens documented from this locality on EarthWonders. - [Machacamarca Mine, Bolivia Locality Guide](https://earthwonders.com/guides/machacamarca-mine_bolivia_153197): Machacamarca Mine, Bolivia - historic locality famed for cogwheel bournonite twins and first-crystal augelite, with quartz, pyrite, and siderite. - [Machacamarca mining district, Bolivia Locality Guide](https://earthwonders.com/guides/machacamarca-mining-district_bolivia_153198): Machacamarca mining district, Bolivia - premier source of bournonite, with steel-gray cogwheels on quartz and pyrite, prized for locality and rarity. - [Machacamarca subdistrict, Bolivia Locality Guide](https://earthwonders.com/guides/machacamarca-subdistrict_bolivia_153199): Machacamarca subdistrict, Bolivia - a historic locality for augelite-bearing sulfosalts and phosphates, famous for bournonite cogwheels and augelite on quartz. - [Madagascar Locality Guide](https://earthwonders.com/guides/madagascar_102): Madagascar locality guide: central highlands pegmatites yield tourmaline, spodumene, beryl and rarities; prized for color zoning and cross-sections. - [Madan ore field, Bulgaria Locality Guide](https://earthwonders.com/guides/madan-ore-field_bulgaria_153449): A collector's guide to Madan ore field, Bulgaria: its geology, mining history and notable minerals, illustrated with the 224 specimens documented from this locality on EarthWonders. - [Madem-Lakkos mine, Greece Locality Guide](https://earthwonders.com/guides/madem-lakkos-mine_greece_153494): Madem-Lakkos mine, Greece — historic Kassandra locality famed for manganese-rich rhodochrosite in Pb-Zn-Ag deposits; pink botryoidal masses with quartz and sul… - [Madhya Pradesh, India Locality Guide](https://earthwonders.com/guides/madhya-pradesh_india_566116): A collector's guide to Madhya Pradesh, India: its geology, mining history and notable minerals, illustrated with the 157 specimens documented from this locality on EarthWonders. - [Madoc Township, Canada Locality Guide](https://earthwonders.com/guides/madoc-township_canada_153591): Madoc Township, Ontario - premier fluorspar locality known for green, amber, and purple fluorite in banded vuggy veins; old Canadian pedigree and Bailey mine f… - [Magma Mine, USA Locality Guide](https://earthwonders.com/guides/magma-mine_usa_153858): Magma Mine, USA - a renowned underground copper locality yielding barite, pyrite, and calcite on dark matrix; coveted high-grade specimens for collectors. - [Magnesite from Brumado, Brazil](https://earthwonders.com/guides/magnesite_from_brumado_brazil_35493): Brumado magnesite - Brazilian locality in Bahia producing display crystals, often with tourmaline or florencite; prized by collectors for contrast and aestheti… - [Magnesite from Styria, Austria](https://earthwonders.com/guides/magnesite_from_styria_austria_248450): Magnesite - Styrian specimens pair snow-white rhombohedra with pinolite textures and banded forms; formation, appearance, and notable Austrian localities. - [Magnesite](https://earthwonders.com/guides/magnesite): Magnesite: sharp white rhombohedrons and botryoidal/stalactitic forms, plus Alpine pinolite varieties; prized for contrast, texture, and decorative cabinet app… - [Magnet Cove, USA Locality Guide](https://earthwonders.com/guides/magnet-cove_usa_153918): Magnet Cove, USA - classic American locality known for titanium-rich minerals (brookite, rutile, perovskite); striking crystals on quartz attract collectors. - [Magnetite](https://earthwonders.com/guides/magnetite): Magnetite - iconic magnetic iron oxide with crisp octahedral crystals, mirror luster on matrix, and coveted Huanggang (Inner Mongolia) specimens for collectors - [Magnetite from Huanggang Mine, China](https://earthwonders.com/guides/magnetite_from_huanggang-mine_china_114410): Huanggang magnetite sits at the intersection of two collector worlds: robust iron-skarn ore and highly aesthetic Chinese display minerals. The best pieces are not merely heavy black iron-ore specimens... - [Maharashtra, India Locality Guide](https://earthwonders.com/guides/maharashtra_india_154119): A collector's guide to Maharashtra, India: its geology, mining history and notable minerals, illustrated with the 111 specimens documented from this locality on EarthWonders. - [Mahenge, Tanzania Locality Guide](https://earthwonders.com/guides/mahenge_tanzania_154159): Mahenge, Tanzania - marble-hosted spinel in vivid colors (hot pink to cobalt blue) and giant crystals, sculptural specimens prized by collectors. - [Mahodari quarry, India Locality Guide](https://earthwonders.com/guides/mahodari-quarry_india_154184): Mahodari quarry, India, a Deccan Trap locality famed for botryoidal fluorite spheres in quartz, yellow to yellow-green translucent balls; prized by collectors. - [Maine, USA Locality Guide](https://earthwonders.com/guides/maine_usa_154338): Maine, USA — famed pegmatites yield gem tourmaline (elbaite) and vivid purple fluorapatite; a classic locality for collectible thumbnails and cabinet specimens. - [Majuba Placers, USA Locality Guide](https://earthwonders.com/guides/majuba-placers_usa_573128): Majuba Placers, USA - Nevada placer field known for bright native gold nuggets and crisp crystal thumbnails, plus rare copper-arsenate minerals from Majuba Hil… - [Malachite from Bisbee, Arizona, USA](https://earthwonders.com/guides/malachite_from_bisbee_usa_25644): Malachite from Bisbee, Arizona — classic copper-carbonate featuring deep emerald to blue-green botryoidal crusts, velvety chatoyancy, and sculptural vug forms. - [Malachite from Katanga Copper Crescent, DR Congo](https://earthwonders.com/guides/malachite_from_katanga-copper-crescent_dr-congo_127140): Malachite from Katanga Copper Crescent, DR Congo — velvety stalactites, fibrous sprays, and crisp botryoids; notable for surface life and precise locality. - [Malachite from Morenci Mine, Arizona, USA](https://earthwonders.com/guides/malachite_from_morenci-mine_usa_170463): Malachite from Morenci, Arizona: vivid green botryoidal forms and pseudomorphs against a dark matrix; prized for color contrasts with azurite and chrysocolla. - [Malachite from Milpillas Mine, Sonora, Mexico](https://earthwonders.com/guides/malachite_from_milpillas-mine_mexico_165066): Milpillas malachite, from Sonora’s Milpillas Mine, offers azurite-pseudomorph forms, silky green luster, and blue-green color contrasts that collectors prize. - [Malachite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/malachite_from_tsumeb_namibia_261664): Malachite from the Tsumeb Mine, Namibia - azurite-related pseudomorphs, velvety acicular sprays, blue-on-green contrast, highly valued by collectors for form. - [Malachite from Lavrion Mining District, Greece](https://earthwonders.com/guides/malachite_from_lavrion-mining-district_greece_140973): Malachite from Lavrion, Greece — bright green veils with azurite contrast in a historic oxidation-zone district; prized for locality and collector appeal. - [Malachite](https://earthwonders.com/guides/malachite): Malachite - vivid green banded crystals and botryoidal forms from copper deposits; color varieties, formation clues, and identification tips for collectors. - [Malachite from Chessy Copper Mines, France](https://earthwonders.com/guides/malachite_from_chessy-copper-mines_france_49108): Malachite from Chessy Copper Mines, France - sharp pseudomorphs after cuprite, deep green color, often with azurite, a historic European copper-oxide classic. - [Malad Quarry, India Locality Guide](https://earthwonders.com/guides/malad-quarry_india_154723): Malad Quarry, India — Deccan locality famed for zeolite-bearing cavities in altered basalt, exposing prehnite after laumontite, gyrolite, and okenite crystals. - [Malkhan pegmatite field, Russia Locality Guide](https://earthwonders.com/guides/malkhan-pegmatite-field_russia_570005): Malkhan pegmatite field, Russia - Transbaikalia locality yielding gem tourmaline pockets, wine-red rubellite, and crystals on smoky quartz and feldspar. - [Malmberget, Sweden Locality Guide](https://earthwonders.com/guides/malmberget_sweden_155099): Malmberget, Sweden — Kiruna-type ore locality famed for honey-gold calcite, fluorite, and stilbite in pocket environments; historic pockets attract collectors. - [Mammoth mine, USA Locality Guide](https://earthwonders.com/guides/mammoth-mine_usa_155407): Mammoth mine, USA - classic Tintic locality in Utah, yielding dark, dense copper-ores with azurite, malachite, clinoclase and arsenates; prized by collectors. - [Mammoth-Saint Anthony Mine, USA Locality Guide](https://earthwonders.com/guides/mammoth-saint-anthony-mine_usa_155478): A collector's guide to Mammoth-Saint Anthony Mine, USA: its geology, mining history and notable minerals, illustrated with the 255 specimens documented from this locality on EarthWonders. - [Mamuju Regency, Indonesia Locality Guide](https://earthwonders.com/guides/mamuju-regency_indonesia_155513): A collector's guide to Mamuju Regency, Indonesia: its geology, mining history and notable minerals, illustrated with the 53 specimens documented from this locality on EarthWonders. - [Manaoshan Mine, China Locality Guide](https://earthwonders.com/guides/manaoshan-mine_china_155567): Manaoshan Mine, China — Chenzhou locality famed for sea-green fluorite, pastel calcite, and drusy quartz; prized for color, fluorescence, and provenance. - [Mandalay Region, Myanmar Locality Guide](https://earthwonders.com/guides/mandalay-region_myanmar_155641): Mandalay Region, Myanmar — Mogok Stone Tract yields ruby, sapphire, spinel, topaz, beryl, and rare pegmatite minerals; prized for crystal form, color, and loca… - [Mandrosonoro, Madagascar Locality Guide](https://earthwonders.com/guides/mandrosonoro_madagascar_155715): A collector's guide to Mandrosonoro, Madagascar: its geology, mining history and notable minerals, illustrated with the 20 specimens documented from this locality on EarthWonders. - [Manganese](https://earthwonders.com/guides/manganese): Native manganese a rare native-element specimen prized by advanced collectors for its silvery luster, tiny grains, and provenance; misidentifications lower val… - [Manganite](https://earthwonders.com/guides/manganite): Manganite — black metallic MnO(OH) with steel-gray luster and crisp, striated crystals; sought for large, lustrous specimens from Ilfeld and Kalahari Field. - [Manganite from Wessels Mine, South Africa](https://earthwonders.com/guides/manganite_from_wessels-mine_south-africa_289263): Manganite from Wessels Mine, South Africa, with steel-gray blades and platy botryoids; a rare, desirable hydrothermal manganese specimen for collectors. - [Manganite from Ilfeld, Germany](https://earthwonders.com/guides/manganite_from_ilfeld_germany_116736): Manganite from Ilfeld, Germany — type locality and historic benchmark for collectors, featuring jet-black prisms with brilliant luster and striking form. - [Manganite from N’Chwaning Mines, South Africa](https://earthwonders.com/guides/manganite_from_nchwaning-mines_south-africa_177165): Manganite from N’Chwaning Mines, South Africa — a Kalahari manganese locality prized for metallic-black crystals and rhodochrosite and calcite. - [Manuelita Mine, Peru Locality Guide](https://earthwonders.com/guides/manuelita-mine_peru_156254): Manuelita Mine, Peru — premier locality for rhodochrosite on dark sulfide, with quartz and calcite, yielding vivid pink rhombohedra prized by collectors. - [Manyara Region, Tanzania Locality Guide](https://earthwonders.com/guides/manyara-region_tanzania_156276): Manyara Region, Tanzania - Merelani Hills yields tanzanite from blue-violet zoisite, plus tsavorite and diopside, a storied, highly prized collector locality. - [Mapimí, Mexico Locality Guide](https://earthwonders.com/guides/mapim_mexico_156381): Mapimí, Mexico — Ojuela Mine, an oxidized ore system yielding adamite, legrandite, mimetite, wulfenite, and more; a cornerstone locality for collectors. - [Maramureș County, Romania Locality Guide](https://earthwonders.com/guides/maramure-county_romania_156480): Maramureș County, historic mining district yielding stibnite, baryte, galena and rare sulfosalts; Baia Sprie type localities boost collector appeal and value. - [Marcasite](https://earthwonders.com/guides/marcasite): Marcasite - orthorhombic dimorph of pyrite with cockscomb blade clusters, metallic luster and iridescent tarnish; prized for sculptural form yet requires caref… - [Marcasite from Cap Blanc-Nez, France](https://earthwonders.com/guides/marcasite_from_cap-blanc-nez_france_41768): Cap Blanc-Nez, France — a premier locality for marcasite in chalk, prized for sharp bladed crystals and the key distinction from pyrite for collectors. - [Marcasite from Joplin Field, USA](https://earthwonders.com/guides/marcasite_from_joplin-field_usa_123826): Marcasite from Joplin Field — brassy, blade-like crystals often on galena in the Tri-State district, prized for sediment-hosted texture and striking contrast. - [Margabal Mine, France Locality Guide](https://earthwonders.com/guides/margabal-mine_france_157016): Margabal Mine, France: a small uranium phosphate locality famed for torbernite and metatorbernite on smoky quartz, prized for sculptural crystal forms. - [Mariposa County, USA Locality Guide](https://earthwonders.com/guides/mariposa-county_usa_157522): Mariposa County — a premier gold locality with native gold in quartz and rare Trumbull Peak minerals; prized for display-worthy specimens and mining lore. - [Mariquita Mine, Spain Locality Guide](https://earthwonders.com/guides/mariquita-mine_spain_157538): Mariquita Mine, Spain - premier mercury locality in the Ossa-Morena Zone, yielding calomel, eglestonite, cinnabar, and rare mercury minerals in cabinet pieces. - [Marquette County, USA Locality Guide](https://earthwonders.com/guides/marquette-county_usa_157912): Marquette County, USA: Michigan's classic iron-oxide locality, known for specular hematite, martite, goethite and jasper; historic mines and collecting appeal. - [Mashamba West Mine, DR Congo Locality Guide](https://earthwonders.com/guides/mashamba-west-mine_dr-congo_158757): A collector's guide to Mashamba West Mine, DR Congo: its geology, mining history and notable minerals, illustrated with the 432 specimens documented from this locality on EarthWonders. - [Massachusetts, USA Locality Guide](https://earthwonders.com/guides/massachusetts_usa_158868): Massachusetts, USA – diverse mineral belts yield garnets, goshenite, pyromorphite, wulfenite, rhodonite, and iconic Chester/Loudville localities, prized for lo… - [Mauldin Mountain, USA Locality Guide](https://earthwonders.com/guides/mauldin-mountain_usa_159413): A collector's guide to Mauldin Mountain, USA: its geology, mining history and notable minerals, illustrated with the 50 specimens documented from this locality on EarthWonders. - [Mawi pegmatite, Afghanistan Locality Guide](https://earthwonders.com/guides/mawi-pegmatite_afghanistan_159560): A collector's guide to Mawi pegmatite, Afghanistan: its geology, mining history and notable minerals, illustrated with the 269 specimens documented from this locality on EarthWonders. - [Maybee Quarry, USA Locality Guide](https://earthwonders.com/guides/maybee-quarry_usa_159691): Maybee Quarry, Michigan - a Midwest locality prized for lemon-yellow sulfur on celestine and calcite, set in vuggy dolostone and sought after by collectors. - [Medina, Brazil Locality Guide](https://earthwonders.com/guides/medina_brazil_161311): Medina, Brazil — a classic aquamarine locality in the Pedra Azul pegmatites, prized for glassy blue beryl crystals with natural etching and rich color. - [Medina pegmatite field, Brazil Locality Guide](https://earthwonders.com/guides/medina-pegmatite-field_brazil_161315): Medina pegmatite field, Brazil — renowned aquamarine crystals in sea-blue to blue-green beryl, with fluorapatite and topaz; a standout locality for collectors. - [Meigu County, China Locality Guide](https://earthwonders.com/guides/meigu-county_china_161512): A collector's guide to Meigu County, China: its geology, mining history and notable minerals, illustrated with the 55 specimens documented from this locality on EarthWonders. - [Meikle Mine, USA Locality Guide](https://earthwonders.com/guides/meikle-mine_usa_161521): Meikle Mine, USA - Carlin Trend locality in Elko County, Nevada, famed for honey-yellow barite on calcite crystals from active cavities, prized by collectors. - [Melchor Múzquiz, Mexico Locality Guide](https://earthwonders.com/guides/melchor-mzquiz_mexico_566872): Melchor Múzquiz, Mexico — fluorite and celestine locality, famed for violet fluorite cubes on white blades; prized by collectors for architectural crystals. - [Merelani Hills, Tanzania Locality Guide](https://earthwonders.com/guides/merelani-hills_tanzania_162307): A collector's guide to Merelani Hills, Tanzania: its geology, mining history and notable minerals, illustrated with the 806 specimens documented from this locality on EarthWonders. - [Merelani Hills, Tanzania Locality Guide](https://earthwonders.com/guides/merelani-hills_tanzania_573197): A collector's guide to Merelani Hills, Tanzania: its geology, mining history and notable minerals, illustrated with the 77 specimens documented from this locality on EarthWonders. - [Messina Mine, South Africa Locality Guide](https://earthwonders.com/guides/messina-mine_south-africa_162799): Messina Mine, South Africa - renowned for quartz crystals with blue-green ajoite and papagoite, plus shattuckite and native copper; a legendary locality. - [Mexico Locality Guide](https://earthwonders.com/guides/mexico_111): Mexico — a diverse locality with Milpillas azurite and malachite, wulfenite, mimetite, and historic districts like Taxco; prized by collectors for variety and… - [Mexquitic de Carmona Municipality, Mexico Locality Guide](https://earthwonders.com/guides/mexquitic-de-carmona-municipality_mexico_163050): A collector's guide to Mexquitic de Carmona Municipality, Mexico: its geology, mining history and notable minerals, illustrated with the 22 specimens documented from this locality on EarthWonders. - [Mex-Tex Mine, USA Locality Guide](https://earthwonders.com/guides/mex-tex-mine_usa_163051): A collector's guide to Mex-Tex Mine, USA: its geology, mining history and notable minerals, illustrated with the 39 specimens documented from this locality on EarthWonders. - [Mežica, Slovenia Locality Guide](https://earthwonders.com/guides/meica_slovenia_163115): A collector's guide to Mežica, Slovenia: its geology, mining history and notable minerals, illustrated with the 48 specimens documented from this locality on EarthWonders. - [M’Fouati mine, Republic of the Congo Locality Guide](https://earthwonders.com/guides/mfouati-mine_republic-of-the-congo_573249): A collector's guide to M’Fouati mine, Republic of the Congo: its geology, mining history and notable minerals, illustrated with the 77 specimens documented from this locality on EarthWonders. - [Mfouati, Republic of the Congo Locality Guide](https://earthwonders.com/guides/mfouati_republic-of-the-congo_163148): Mfouati, Republic of the Congo — Niari Basin locality known for bright wulfenite, blue hemimorphite, smoky cerussite, and an array of rare secondary minerals p… - [Miandrivazo, Madagascar Locality Guide](https://earthwonders.com/guides/miandrivazo_madagascar_163561): Miandrivazo, Madagascar — a collector locality famed for rock crystal quartz hosting violet-to-blue fluorite octahedra, rare hollow inclusions, and precise loc… - [Miass, Russia Locality Guide](https://earthwonders.com/guides/miass_russia_163610): Miass, Russia — Ilmen Mountains pegmatites yield blue to grey-blue corundum and historic specimens; a protected locality with limited collecting. - [Mibladen Mining District, Morocco Locality Guide](https://earthwonders.com/guides/mibladen-mining-district_morocco_163618): Mibladen Mining District, Morocco — renowned for red vanadinite perched on baryte, with cerussite and wulfenite; a historic, collector-favorite locality. - [Mibladen, Morocco Locality Guide](https://earthwonders.com/guides/mibladen_morocco_574848): Mibladen, Morocco: an arid lead-baryte locality famed for red vanadinite on baryte, with gemmy crystals and striking color making it a standout for collectors. - [Michigan, USA Locality Guide](https://earthwonders.com/guides/michigan_usa_565605): Michigan, USA — renowned for the Keweenaw Peninsula native copper district, with dramatic copper forms and associated minerals; a top pick for collectors. - [Microcline from Shigar Valley, Gilgit-Baltistan, Pakistan](https://earthwonders.com/guides/microcline_from_shigar-valley_pakistan_234601): Microcline from Shigar Valley, Pakistan — white to pale cream crystals in open pockets, creating display-worthy assemblages with aquamarine; prized by collecto… - [Microcline](https://earthwonders.com/guides/microcline): Microcline - classic potassium feldspar with blocky crystals, dramatic twinning (Carlsbad, Manebach) and the vivid amazonite variety, a top Pikes Peak gem. - [Microcline from Erongo Mountains, Namibia](https://earthwonders.com/guides/microcline_from_erongo-mountains_namibia_78994): Microcline - Erongo Mountains, Namibia: pale cream feldspar with blue aquamarine and black schorl; renowned locality and notable for feldspar identification. - [Mid-Continent Mine, USA Locality Guide](https://earthwonders.com/guides/mid-continent-mine_usa_163939): Mid-Continent Mine, USA: Tri-State locality famed for rubyjack sphalerite, metallic galena, chalcopyrite, and amber calcite on chert; prized for vuggy, three-d… - [Middleville, USA Locality Guide](https://earthwonders.com/guides/middleville_usa_164150): A collector's guide to Middleville, USA: its geology, mining history and notable minerals, illustrated with the 46 specimens documented from this locality on EarthWonders. - [Midelt, Morocco Locality Guide](https://earthwonders.com/guides/midelt_morocco_164155): Midelt, Morocco — renowned for Mibladen vanadinite crystals in red to orange-red on barite, within a broad lead-barite province; premier collecting locality. - [Millerite](https://earthwonders.com/guides/millerite): Millerite: gold, needle-like crystals forming delicate sprays; prized for lustrous acicular bundles, fragility, and top localities yielding fine specimens. - [Millerite from Halls Gap, Kentucky, USA](https://earthwonders.com/guides/millerite_from_halls-gap_usa_104421): Millerite from Halls Gap, Kentucky — brassy NiS needle sprays in large geodes with white chalcedony lining; locality prized by collectors. - [Millington Quarry, USA Locality Guide](https://earthwonders.com/guides/millington-quarry_usa_164919): Millington Quarry – New Jersey traprock locality noted for pectolite, prehnite, datolite, calcite, and other Watchung minerals prized by collectors. - [Milpillas, Mexico Locality Guide](https://earthwonders.com/guides/milpillas_mexico_165064): Milpillas, Mexico — defining modern copper locality famed for electric-blue azurite and green malachite, with lustrous crystals and distinctive pseudomorphs. - [Milpillas Mine, Mexico Locality Guide](https://earthwonders.com/guides/milpillas-mine_mexico_165066): Milpillas Mine, Mexico — defining modern locality famed for electric indigo azurite and sculptural malachite, with rare volborthite, dioptase, and cuprite. - [Milpo mine, Peru Locality Guide](https://earthwonders.com/guides/milpo-mine_peru_165067): Milpo mine, Peru — Central Peruvian locality famed for glassy green fluorite atop metallic sulfides (pyrite, sphalerite, galena) and a rich collector assemblag… - [Mimetite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/mimetite_from_tsumeb_namibia_261664): Tsumeb mimetite — glassy, transparent hexagonal prisms with sharp terminations; renowned paragenesis with smithsonite, cerussite, wulfenite; a benchmark locali… - [Mimetite from Mammoth-Saint Anthony Mine, Arizona, USA](https://earthwonders.com/guides/mimetite_from_mammoth-saint-anthony-mine_usa_155478): Mimetite from Mammoth-Saint Anthony Mine, Arizona: bright orange to canary-yellow crystals and crusts in oxidized vein context, prized by collectors. - [Mimetite from Ojuela Mine, Mexico](https://earthwonders.com/guides/mimetite_from_ojuela-mine_mexico_186119): Ojuela Mine, Mexico — famed for green-to-yellow mimetite on iron-rich gossan, often with bright wulfenite; a classic locality prized by mineral collectors. - [Mimetite from Dry Gill Mine, Caldbeck Fells, England](https://earthwonders.com/guides/mimetite_from_dry-gill-mine_uk_71692): Dry Gill Mine, Caldbeck Fells, England - classic home of British campylite; mimetite barrels in quartz-manganese gangue, prized for color, form, and locality. - [Mimetite](https://earthwonders.com/guides/mimetite): Mimetite: lead arsenate chloride crystals from canary yellow to orange; hexagonal prisms and campylite forms showcase color, variety, and localities. - [Mimoso do Sul, Brazil Locality Guide](https://earthwonders.com/guides/mimoso-do-sul_brazil_165137): Mimoso do Sul, Brazil — a classic pegmatite locality renowned for water-clear topaz and sculptural aquamarine, often on matrix, prized by collectors. - [Minas Gerais, Brazil Locality Guide](https://earthwonders.com/guides/minas-gerais_brazil_165247): Minas Gerais, Brazil — premier mineral locality producing imperial topaz, aquamarine, tourmaline, and historic diamonds; highly prized by collectors. - [Mina Tiro Estrella, USA Locality Guide](https://earthwonders.com/guides/mina-tiro-estrella_usa_165252): Mina Tiro Estrella, USA - Capitan Mountains, NM locality famed for Japan-law twin smoky quartz, glassy luster, REE-bearing veins, and small pockets. - [Mindingi Mine, DR Congo Locality Guide](https://earthwonders.com/guides/mindingi-mine_dr-congo_165292): A collector's guide to Mindingi Mine, DR Congo: its geology, mining history and notable minerals, illustrated with the 177 specimens documented from this locality on EarthWonders. - [Mindouli, Republic of the Congo Locality Guide](https://earthwonders.com/guides/mindouli_republic-of-the-congo_165300): Mindouli, Republic of the Congo - type locality for plancheite; prized for emerald-green dioptase on blue plancheite and rare paragenesis with mimetite and wul… - [Mine No. 884, China Locality Guide](https://earthwonders.com/guides/mine-no-884_china_165422): Mine No. 884, China — a Leiping-area locality famous for calcite with hematite, glassy V-shaped butterfly twins, and strong appeal to collectors worldwide. - [Mineral Point Mine, USA Locality Guide](https://earthwonders.com/guides/mineral-point-mine_usa_165634): Mineral Point Mine, USA: Upper Mississippi Valley locality famed for galena, sphalerite, smithsonite, and calcite pseudomorphs; rich history for collectors. - [Mineral Species Categorization Guide](https://earthwonders.com/guides/categorization-guide): Mineral Species Categorization Guide — practical rarity thresholds, collector interest, and stability criteria to help classify species and guide decisions. - [Minerva No. 1 Mine, USA Locality Guide](https://earthwonders.com/guides/minerva-no-1-mine_usa_165731): A collector's guide to Minerva No. 1 Mine, USA: its geology, mining history and notable minerals, illustrated with the 725 specimens documented from this locality on EarthWonders. - [Minggang Mine, China Locality Guide](https://earthwonders.com/guides/minggang-mine_china_165768): A collector's guide to Minggang Mine, China: its geology, mining history and notable minerals, illustrated with the 33 specimens documented from this locality on EarthWonders. - [Minnesota, USA Locality Guide](https://earthwonders.com/guides/minnesota_usa_165882): Minnesota, USA Locality guide to iron-range minerals (groutite, goethite, hematite) in dark specimens, with historic mining heritage and collector appeal. - [Mission complex, USA Locality Guide](https://earthwonders.com/guides/mission-complex_usa_166274): Mission complex, USA — Arizona locality famed for delicate gypsum-hosted hairlike native copper; three dimensional windowpane slabs prized by collectors. - [Mistake Mine, USA Locality Guide](https://earthwonders.com/guides/mistake-mine_usa_166345): Mistake Mine, Arizona — small locality famed for manganese-oxide ramsdellite crystals, their metallic luster, and associations with pyrolusite and romanèchite. - [MMM Mine, Australia Locality Guide](https://earthwonders.com/guides/mmm-mine_australia_573244): MMM Mine, Australia — Broken Hill locality yielding oxidised Pb-Zn-Ag minerals; lime-to-olive pyromorphite and smithsonite botryoids, prized by collectors. - [Mockingbird Mine, USA Locality Guide](https://earthwonders.com/guides/mockingbird-mine_usa_166918): Mockingbird Mine, California — renowned for crystallized native gold in clay-filled pockets, arborescent octahedra, and Mother Lode style specimens. - [Mogok Township, Myanmar Locality Guide](https://earthwonders.com/guides/mogok-township_myanmar_565981): Mogok Township, Myanmar — famed marble-hosted ruby and red spinel among diverse minerals, top-tier display specimens and a storied gem locality. - [Mogok Valley, Myanmar Locality Guide](https://earthwonders.com/guides/mogok-valley_myanmar_571970): Mogok Valley, Myanmar — locality famed for ruby, sapphire, spinel and topaz; metamorphic rocks and strong collector appeal through varied minerals. - [Mohawk mine, Canada Locality Guide](https://earthwonders.com/guides/mohawk-mine_canada_167212): Mohawk Mine, California — a classic Mojave micromount locality famed for tiny arsenate and carbonate crystals (mimetite, beudantite, adamite, smithsonite) priz… - [Molo Village, null Locality Guide](https://earthwonders.com/guides/molo-village_null_573298): A collector's guide to Molo Village, null: its geology, mining history and notable minerals, illustrated with the 36 specimens documented from this locality on EarthWonders. - [Molybdenite](https://earthwonders.com/guides/molybdenite): Molybdenite - sharp hexagonal plates and rosettes with metallic luster, prized for geometry and contrasts on quartz or fluorite; top localities and care tips. - [Mona mine, UK Locality Guide](https://earthwonders.com/guides/mona-mine_uk_573327): Mona Mine, UK - a classic Anglesey locality in Parys Mountain, the type locality for anglesite, renowned gossan specimens with glassy crystals and provenance. - [Monarch Mine, null Locality Guide](https://earthwonders.com/guides/monarch-mine_null_573271): Monarch Mine, Idaho — a rare oxidation-zone cerussite locality in the Murray camp, yielding glassy, flat-twinned crystals on gossan, prized by collectors. - [Monazite](https://earthwonders.com/guides/monazite): Monazite - rare-earth phosphate with monoclinic crystals; resinous to vitreous luster and honey-yellow to orange-brown hues; prized euhedral crystals. - [Mono County, USA Locality Guide](https://earthwonders.com/guides/mono-county_usa_573336): Mono County, USA — renowned for Champion Mine rutile on pyrophyllite, with mirror-bright red to dark crystals and mineralogy prized by collectors. - [Montana, USA Locality Guide](https://earthwonders.com/guides/montana_usa_168510): Montana, USA — a vast mineral province with diverse localities producing parisite-(Ce), tyuyamunite, sapphires, and agates; prized for range, rarity, and type-… - [Mont Blanc Massif northwest flank, France Locality Guide](https://earthwonders.com/guides/mont-blanc-massif-northwest-flank_france_168624): A collector's guide to Mont Blanc Massif northwest flank, France: its geology, mining history and notable minerals, illustrated with the 72 specimens documented from this locality on EarthWonders. - [Monte Cristo mine, USA Locality Guide](https://earthwonders.com/guides/monte-cristo-mine_usa_168908): Monte Cristo mine, USA — iconic Rush Creek zinc locality in Arkansas, producing yellow to orange smithsonite botryoids and saddle-like dolomite replacements. - [Monteponi Mine, Italy Locality Guide](https://earthwonders.com/guides/monteponi-mine_italy_169152): Monteponi Mine, Sardinia — renowned locality for phosgenite, anglesite, cerussite and other Pb-Zn-Ag minerals; classic crystals and mining heritage. - [Montreal Mine, USA Locality Guide](https://earthwonders.com/guides/montreal-mine_usa_169732): A collector's guide to Montreal Mine, USA: its geology, mining history and notable minerals, illustrated with the 285 specimens documented from this locality on EarthWonders. - [Mont Saint-Hilaire, Canada Locality Guide](https://earthwonders.com/guides/mont-saint-hilaire_canada_169814): Mont Saint-Hilaire, Canada — a premier collector locality famed for extreme species diversity and display specimens, from serandite blades to carletonite. - [Moonen Bay, null Locality Guide](https://earthwonders.com/guides/moonen-bay_null_573321): Moonen Bay, Scotland — classic coastal zeolite locality on Skye; yields chabazite, analcime, apophyllite-group, mesolite; prized for fresh, coastal finds. - [Morenci Mine, USA Locality Guide](https://earthwonders.com/guides/morenci-mine_usa_170463): A collector's guide to Morenci Mine, USA: its geology, mining history and notable minerals, illustrated with the 269 specimens documented from this locality on EarthWonders. - [Morenci, USA Locality Guide](https://earthwonders.com/guides/morenci_usa_170461): A collector's guide to Morenci, USA: its geology, mining history and notable minerals, illustrated with the 97 specimens documented from this locality on EarthWonders. - [Morganite from Paprok, Nuristan, Afghanistan](https://earthwonders.com/guides/morganite_from_paprok_afghanistan_192559): Paprok morganite, Nuristan, Afghanistan — pink beryl on a white pegmatite matrix, prized for complete sharp crystals, glassy translucency, and standout display. - [Morganite from Pala Mining District, USA](https://earthwonders.com/guides/morganite_from_pala-mining-district_usa_191689): Pala Morganite - California's pegmatite treasures; soft rose to pinkish hues, glassy tabular crystals, and pocket-mined specimens prized for color and history. - [Morganite from Shigar District, Pakistan](https://earthwonders.com/guides/morganite_from_shigar-district_pakistan_234600): Morganite from Shigar District is best understood as part of northern Pakistan’s broader beryl story: high, cold granitic pegmatites cutting the Karakoram rocks and yielding glassy crystals of aquamar... - [Morganite](https://earthwonders.com/guides/morganite): Morganite - pink to peach beryl with glassy hexagonal prisms; valued for pastel color, sizable crystals on matrix, and classic pegmatite localities. - [Morocco Locality Guide](https://earthwonders.com/guides/morocco_115): A collector's guide to Morocco: its geology, mining history and notable minerals, illustrated with the 178 specimens documented from this locality on EarthWonders. - [Morococala Mine, Bolivia Locality Guide](https://earthwonders.com/guides/morococala-mine_bolivia_170853): Morococala Mine, Bolivia — renowned for large vivianite crystals with deep bottle-green color, glassy luster, and scarcity that boosts collecting appeal. - [Morogoro, Tanzania Locality Guide](https://earthwonders.com/guides/morogoro_tanzania_170858): Morogoro, Tanzania - a gem district famed for marble-hosted ruby, pink sapphire, spinel, and scapolite; diverse localities and collector-grade crystals. - [Morro da Mina mine, Brazil Locality Guide](https://earthwonders.com/guides/morro-da-mina-mine_brazil_171009): Morro da Mina, Brazil — a historic manganese locality in Minas Gerais, renowned for gemmy red rhodonite crystals and a suite of Mn minerals prized by collector… - [Morro Velho mine, Brazil Locality Guide](https://earthwonders.com/guides/morro-velho-mine_brazil_171044): Morro Velho Mine, Brazil — Nova Lima locality famed for siderite, dolomite, pyrrhotite, cubanite, quartz, and scheelite; prized by collectors for its carbonate… - [Moscona Mine, Spain Locality Guide](https://earthwonders.com/guides/moscona-mine_spain_171197): A collector's guide to Moscona Mine, Spain: its geology, mining history and notable minerals, illustrated with the 181 specimens documented from this locality on EarthWonders. - [Mottramite](https://earthwonders.com/guides/mottramite): Mottramite - vivid green to olive botryoidal coatings and striking luster; a popular vanadate prized for color, texture, and key localities. - [Mottramite from Tsumeb, Namibia](https://earthwonders.com/guides/mottramite_from_tsumeb_namibia_261664): Mottramite from Tsumeb, Namibia - mossy, dendritic green masses on calcite, a rare vanadate formed in a supergene deposit; prized for texture and contrast. - [Mottramite from Ojuela Mine, Mexico](https://earthwonders.com/guides/mottramite_from_ojuela-mine_mexico_186119): Ojuela Mine Mottramite from Mexico - velvety olive-green botryoidal crusts on iron-oxide matrix, a famous locality prized by collectors for color and contrast. - [Mount Diablo pit, USA Locality Guide](https://earthwonders.com/guides/mount-diablo-pit_usa_172114): Mount Diablo pit, USA - Nevada oxidized silver deposit in the Candelaria district, prized for vivid micromounts of azurite, olivenite, and malachite. - [Mount Gunson, Australia Locality Guide](https://earthwonders.com/guides/mount-gunson_australia_573202): Mount Gunson, Australia — essential copper locality in South Australia, yielding deep green atacamite, green gypsum, and notable wittichenite crystals. - [Mount Ida Mountain Mine, USA Locality Guide](https://earthwonders.com/guides/mount-ida-mountain-mine_usa_172337): Mount Ida Mountain Mine, Arkansas — Ouachita quartz locality with water-clear, sharply terminated crystals from pocket fissures and old-mine provenance. - [Mount Little Xuebaoding, China Locality Guide](https://earthwonders.com/guides/mount-little-xuebaoding_china_172436): Mount Little Xuebaoding, China: a premier W-Sn-Be locality with large euhedral scheelite, cassiterite, muscovite, and rarer tin minerals prized by collectors. - [Mount Malosa, Malawi Locality Guide](https://earthwonders.com/guides/mount-malosa_malawi_172457): Mount Malosa, Malawi — a premier collector locality famed for large aegirine crystals, smoky quartz, and rare Be, Zr, Nb and REE minerals. - [Mount Malosa, null Locality Guide](https://earthwonders.com/guides/mount-malosa_null_573250): Mount Malosa, Malawi — alkaline-pegmatite locality famed for jet-black aegirine and arfvedsonite, pale feldspar and smoky quartz, plus rare Nb and REE minerals. - [Mount Mica Quarry, Paris, USA Locality Guide](https://earthwonders.com/guides/mount-mica-quarry-paris_usa_573348): Mount Mica Quarry, Maine — classic pegmatite locality famed for elbaite tourmaline pockets, vivid colors, and its historic and ongoing collecting appeal. - [Mount Xuebaoding, China Locality Guide](https://earthwonders.com/guides/mount-xuebaoding_china_172902): Mount Xuebaoding, China — renowned W-Sn-Be vein locality yielding sculptural scheelite, beryl, cassiterite, and other rare minerals prized by collectors. - [Mowbray Mine, UK Locality Guide](https://earthwonders.com/guides/mowbray-mine_uk_173014): Mowbray Mine, UK - historic baryte locality renowned for colored, lustrous BaSO4 blades on dolomite, rare color variants, and classic Frizington-era specimens. - [Mpumalanga, South Africa Locality Guide](https://earthwonders.com/guides/mpumalanga_south-africa_566192): Mpumalanga, South Africa — Boekenhouthoek’s cactus and spirit quartz showcase two-stage growth, vivid amethyst/smoky hues, and standout collecting appeal. - [Mt Antero, USA Locality Guide](https://earthwonders.com/guides/mt-antero_usa_173263): Mt Antero, Colorado — a high-altitude gem locality famed for pale to blue aquamarine in alpine pegmatites, with rare bertrandite, phenakite, and striking pocke… - [Mt. White, Mt. Antero area, Chaffee County, USA Locality Guide](https://earthwonders.com/guides/mt-white-mt-antero-area-chaffee-county_usa_574678): Mt. White — high-alpine pocket locality yielding premier aquamarine and related beryllium minerals; prized by collectors for rarity and precise Mt. White label… - [Mufulira Mine, Zambia Locality Guide](https://earthwonders.com/guides/mufulira-mine_zambia_173720): A collector's guide to Mufulira Mine, Zambia: its geology, mining history and notable minerals, illustrated with the 61 specimens documented from this locality on EarthWonders. - [Muğla Province, Türkiye Locality Guide](https://earthwonders.com/guides/mula-province_trkiye_570013): Muğla Province, Türkiye — renowned for İlbir Mountain gem diaspore crystals, large, clear V-twins, plus corundum and aluminous minerals prized by collectors. - [Mumbai City District, India Locality Guide](https://earthwonders.com/guides/mumbai-city-district_india_174126): A collector's guide to Mumbai City District, India: its geology, mining history and notable minerals, illustrated with the 100 specimens documented from this locality on EarthWonders. - [Mundo Nuevo Mine, Peru Locality Guide](https://earthwonders.com/guides/mundo-nuevo-mine_peru_174203): Mundo Nuevo Mine, Peru – a premier high-Andean tungsten locality famed for lustrous hübnerite, luminous augelite, and quartz pockets for collectors. - [Munster, Ireland Locality Guide](https://earthwonders.com/guides/munster_ireland_174296): Munster, Ireland — Silvermines district and Mogul Mine, home to mirror-bright galena and honey-brown sphalerite; a prized locality for cabinet-quality sulfides… - [Murmansk Oblast, Russia Locality Guide](https://earthwonders.com/guides/murmansk-oblast_russia_174467): Murmansk Oblast, Russia — locality famed for eudialyte, astrophyllite, and rare Zr‑Ti‑Nb‑REE silicates; prized by collectors for displays and micromounts. - [Murray Mine, null Locality Guide](https://earthwonders.com/guides/murray-mine_null_573259): Murray Mine, Nevada — a premier locality for stibnite, barite, and quartz; prized for sugar-cube barite and readable paragenesis, a favorite among collectors. - [Murzinka Mine, Russia Locality Guide](https://earthwonders.com/guides/murzinka-mine_russia_174672): Murzinka Mine, Russia — historic pegmatite locality famed for pale blue topaz, aquamarine beryl, smoky quartz, and cleavelandite; highly prized by collectors. - [Muscovite from Itinga, Minas Gerais, Brazil](https://earthwonders.com/guides/muscovite_from_itinga_brazil_119629): Muscovite from Itinga, Minas Gerais — star, golden-yellow crystals on albite, aggregates prized by collectors; a standout Jenipapo pegmatite specimen. - [Muscovite from Shigar District, Pakistan](https://earthwonders.com/guides/muscovite_from_shigar-district_pakistan_234600): Muscovite from Shigar District, Pakistan - silvery to bronze mica blades on pegmatite matrix, a signature of Shigar pegmatites prized by collectors. - [Muscovite](https://earthwonders.com/guides/muscovite): Muscovite — classic white mica with perfect basal cleavage and pearly luster; elegant rosettes and sheets, with rare, high‑quality pieces for collectors. - [Muscovite from Yaogangxian Mine, China](https://earthwonders.com/guides/muscovite_from_yaogangxian-mine_china_296590): Yaogangxian muscovite, China: a locality signature famed for mica-rich veins, with fluorite and scheelite on silvery mica, prized by collectors. - [Muscovite from Wushan Spessartine Mine, China](https://earthwonders.com/guides/muscovite_from_wushan-spessartine-mine_china_295209): Muscovite from the Wushan Spessartine Mine is not the headline mineral of the locality; that role belongs to the vivid orange spessartine. Yet the mica is one of the accents that gives the best Tongbe... - [Muscovite from Mount Little Xuebaoding, China](https://earthwonders.com/guides/muscovite_from_mount-little-xuebaoding_china_172436): Muscovite from Mount Little Xuebaoding, China - silvery, pearly laminar crystals forming rosettes in a high-altitude granite hydrothermal setting. - [Musonoi Mine, DR Congo Locality Guide](https://earthwonders.com/guides/musonoi-mine_dr-congo_174788): Musonoi Mine, DR Congo - renowned Katangan locality yielding cuprosklodowskite, torbernite, sklodowskite, and malachite; a type locality prized by collectors. - [Mutshatsha, DR Congo Locality Guide](https://earthwonders.com/guides/mutshatsha_dr-congo_174888): Mutshatsha, DR Congo - a premier Copperbelt locality known for malachite and rare uranyl minerals, with museum-worthy specimens and strong collecting appeal. - [Mutuca Mine, Brazil Locality Guide](https://earthwonders.com/guides/mutuca-mine_brazil_573203): Mutuca Mine, Brazil — pegmatite locality famed for large gem-quality blue to blue-green elbaite (indicolite), often with quartz matrix and prized for color, si… - [Muzo Mine, Colombia Locality Guide](https://earthwonders.com/guides/muzo-mine_colombia_174952): A collector's guide to Muzo Mine, Colombia: its geology, mining history and notable minerals, illustrated with the 219 specimens documented from this locality on EarthWonders. - [Myanmar Locality Guide](https://earthwonders.com/guides/myanmar_117): Myanmar - a constellation of gem provinces, home to Mogok's rubies, sapphires, spinel, and rare borates, plus Hpakant jadeite; standout country for collectors. - [Mysore District, India Locality Guide](https://earthwonders.com/guides/mysore-district_india_175137): Mysore District, India — renowned metamorphic corundum (ruby) crystals from southern Karnataka; red-to-pink hues, distinctive matrix, and collector appeal. - [Nadonjukin, Tanzania Locality Guide](https://earthwonders.com/guides/nadonjukin_tanzania_175358): Nadonjukin, Tanzania — vanadium-bearing dravite/uvite tourmaline crystals with vivid green caps, sharp terminations, and scarce matrix pieces prized by collect… - [Nador, Morocco Locality Guide](https://earthwonders.com/guides/nador_morocco_572881): Nador, Morocco — a historic iron district famed for ice-blue barite from Jebel Ouichane and rare mirror-bright hematite blades, prized by collectors. - [Nagar District, Pakistan Locality Guide](https://earthwonders.com/guides/nagar-district_pakistan_175415): Nagar District, Pakistan — Chumar Bakhoor pegmatites yield ice-blue beryl prisms on muscovite from miarolitic pockets, a premier collector locality. - [Nagar, Pakistan Locality Guide](https://earthwonders.com/guides/nagar_pakistan_175412): Nagar, Pakistan — a Karakoram pegmatite locality famed for pale aquamarine on mica, plus fluorite and apatite, prized for crystal form, luster, and rarity. - [Naica, Mexico Locality Guide](https://earthwonders.com/guides/naica_mexico_175533): Naica, Mexico — famed locality for pale fluorite, galena, and gypsum, plus the Cave of the Crystals, a landmark of architectural crystals and science. - [Naica Mine, Mexico Locality Guide](https://earthwonders.com/guides/naica-mine_mexico_175534): A collector's guide to Naica Mine, Mexico: its geology, mining history and notable minerals, illustrated with the 52 specimens documented from this locality on EarthWonders. - [Nakhlak Mine, Iran Locality Guide](https://earthwonders.com/guides/nakhlak-mine_iran_573205): Nakhlak Mine, Iran — desert lead locality famed for cerussite with snowflake twins, orange wulfenite accents, and chromium-rich mimetite; historic mining roots. - [Namaqualand metamorphic complex, South Africa Locality Guide](https://earthwonders.com/guides/namaqualand-metamorphic-complex_south-africa_175709): A collector's guide to Namaqualand metamorphic complex, South Africa: its geology, mining history and notable minerals, illustrated with the 29 specimens documented from this locality on EarthWonders. - [Namibia Locality Guide](https://earthwonders.com/guides/namibia_118): A collector's guide to Namibia: its geology, mining history and notable minerals, illustrated with the 67 specimens documented from this locality on EarthWonders. - [Nancy Hanks Mine, USA Locality Guide](https://earthwonders.com/guides/nancy-hanks-mine_usa_175895): A collector's guide to Nancy Hanks Mine, USA: its geology, mining history and notable minerals, illustrated with the 44 specimens documented from this locality on EarthWonders. - [Nandan County, China Locality Guide](https://earthwonders.com/guides/nandan-county_china_175913): Nandan County, China — Dachang tin-polymetallic district and Nantan iron meteorite field, famed for sharp calcites, stibnite sprays, and limonite gossans. - [Nani, null Locality Guide](https://earthwonders.com/guides/nani_null_573278): Nani Hill, Tanzania — manganese-rich locality yielding orange spessartine garnet and orange kyanite in metamorphic quartz-mica; prized for vivid color, rarity,… - [Nanisivik Mine, Canada Locality Guide](https://earthwonders.com/guides/nanisivik-mine_canada_175967): Nanisivik Mine, Canada — iconic Arctic locality with pyrite pseudomorphs after marcasite, brassy pyrite, amber calcite, and rare sulfides; prized by collectors. - [Nashik District, India Locality Guide](https://earthwonders.com/guides/nashik-district_india_176406): A collector's guide to Nashik District, India: its geology, mining history and notable minerals, illustrated with the 129 specimens documented from this locality on EarthWonders. - [Nashik, India Locality Guide](https://earthwonders.com/guides/nashik_india_176403): Nashik, India — Deccan Trap basalt pockets yield apophyllite, stilbite, scolecite, calcite, powellite; coveted by collectors for sharp, well-formed crystals. - [Natrolite](https://earthwonders.com/guides/natrolite): Natrolite: snowy-white to colorless silky needles forming radiating sprays in basalt cavities; prized for graceful habit, contrast with matrices, and rarity. - [Natrolite from Mont Saint-Hilaire, Quebec, Canada](https://earthwonders.com/guides/natrolite_from_mont-saint-hilaire_canada_169814): Mont Saint-Hilaire, Quebec — famed alkaline-locality yielding natrolite among diverse minerals; sculptural prisms, rare paragenesis, and deep collector appeal. - [Navajún, Spain Locality Guide](https://earthwonders.com/guides/navajn_spain_176725): Navajún, Spain - premier pyrite locality famed for bright brass-yellow cubes from Mina Victoria; sculptural crystals with exact geometry and generous matrix. - [Navegadora claim, Brazil Locality Guide](https://earthwonders.com/guides/navegadora-claim_brazil_176776): Navegadora claim, Brazil: Minas Gerais pegmatite locality famed for lustrous spessartine garnets, deep wine-red color, sculptural forms prized by collectors. - [Navidad Mine, Mexico Locality Guide](https://earthwonders.com/guides/navidad-mine_mexico_176791): Navidad Mine, Mexico — renowned for pink-purple fluorite octahedra and orange creedite balls, with rare lilac creedite on green fluorite, prized by collectors. - [Nchanga Mine, Zambia Locality Guide](https://earthwonders.com/guides/nchanga-mine_zambia_177156): A collector's guide to Nchanga Mine, Zambia: its geology, mining history and notable minerals, illustrated with the 32 specimens documented from this locality on EarthWonders. - [N'Chwaning III Mine, South Africa Locality Guide](https://earthwonders.com/guides/nchwaning-iii-mine_south-africa_177162): A collector's guide to N'Chwaning III Mine, South Africa: its geology, mining history and notable minerals, illustrated with the 184 specimens documented from this locality on EarthWonders. - [N'Chwaning II Mine, South Africa Locality Guide](https://earthwonders.com/guides/nchwaning-ii-mine_south-africa_177163): N'Chwaning II Mine, South Africa — premier manganese locality yielding rare cabinet-scale minerals (hausmannite, rhodochrosite, ettringite) prized for color an… - [N'Chwaning I Mine, South Africa Locality Guide](https://earthwonders.com/guides/nchwaning-i-mine_south-africa_177164): N'Chwaning I Mine, South Africa - legendary Kalahari manganese locality near Hotazel, yielding rhodochrosite, manganite, hausmannite, and rare Mn minerals priz… - [N'Chwaning Mines, South Africa Locality Guide](https://earthwonders.com/guides/nchwaning-mines_south-africa_177165): A collector's guide to N'Chwaning Mines, South Africa: its geology, mining history and notable minerals, illustrated with the 472 specimens documented from this locality on EarthWonders. - [Nentsberry Haggs Mine, UK Locality Guide](https://earthwonders.com/guides/nentsberry-haggs-mine_uk_177732): Nentsberry Haggs Mine, UK — renowned Pennine locality famed for baryte, witherite, barytocalcite and complex zinc–lead assemblages, a key site for collectors. - [Neptunite](https://earthwonders.com/guides/neptunite): Neptunite: jet-black, high-luster prisms with natrolite and benitoite; California State Gem Mine specimens exemplify striking contrast, rarity, and display. - [Neptunite from California State Gem Mine, USA](https://earthwonders.com/guides/neptunite_from_california-state-gem-mine_usa_39978): California State Gem Mine, San Benito County - famed for black neptunite with blue benitoite in natrolite, offering dramatic contrast and collector appeal. - [Neudorf, Germany Locality Guide](https://earthwonders.com/guides/neudorf_germany_178017): A collector's guide to Neudorf, Germany: its geology, mining history and notable minerals, illustrated with the 60 specimens documented from this locality on EarthWonders. - [Neudorf, Germany Locality Guide](https://earthwonders.com/guides/neudorf_germany_178018): Neudorf, Germany: historic European lead-silver locality, famed for argentiferous galena with siderite, quartz, and sculptural crystals prized by collectors. - [Neue Hoffnung Gottes Mine, Germany Locality Guide](https://earthwonders.com/guides/neue-hoffnung-gottes-mine_germany_178030): Neue Hoffnung Gottes Mine, Germany — Freiberg locality and type locality for kermesite, miargyrite, and diaphorite, prized for red kermesite needles and rare s… - [Nevada, USA Locality Guide](https://earthwonders.com/guides/nevada_usa_178330): Nevada, USA - a premier mineral locality with Carlin-type gold and Comstock history, featuring Meikle barite, Round Mountain gold, turquoise, cuprite, and more. - [New Cornelia Mine, USA Locality Guide](https://earthwonders.com/guides/new-cornelia-mine_usa_178764): New Cornelia Mine, USA: Arizona copper locality famed for vivid azurite on malachite, native copper, shattuckite, and type-locality ajoite and papagoite. - [New Cornwall Mine, null Locality Guide](https://earthwonders.com/guides/new-cornwall-mine_null_573314): New Cornwall Mine, Kadina, South Australia — a classic copper-oxide locality famed for emerald-green, lustrous atacamite crystals and its collector prestige. - [New Glencrieff Mine, UK Locality Guide](https://earthwonders.com/guides/new-glencrieff-mine_uk_178935): A collector's guide to New Glencrieff Mine, UK: its geology, mining history and notable minerals, illustrated with the 33 specimens documented from this locality on EarthWonders. - [New Hampshire, USA Locality Guide](https://earthwonders.com/guides/new-hampshire_usa_178953): New Hampshire, USA - pegmatite-rich locality yielding aquamarine beryl, smoky quartz, microcline; Palermo No. 1 and Ruggles Mine are key collector sites. - [New Idria Mining District, USA Locality Guide](https://earthwonders.com/guides/new-idria-mining-district_usa_179024): New Idria Mining District, USA — famous for benitoite with natrolite and neptunite/joaquinite, a distinctive serpentinite locality prized by collectors. - [New Jersey, USA Locality Guide](https://earthwonders.com/guides/new-jersey_usa_179034): New Jersey, USA — renowned Franklin–Sterling Hill zinc district with franklinite, willemite, zincite; famed for UV-fluorescent minerals and cabinet collections. - [New Mexico, USA Locality Guide](https://earthwonders.com/guides/new-mexico_usa_179149): A collector's guide to New Mexico, USA: its geology, mining history and notable minerals, illustrated with the 80 specimens documented from this locality on EarthWonders. - [New Nevada Mine, Mexico Locality Guide](https://earthwonders.com/guides/new-nevada-mine_mexico_179190): New Nevada Mine, Mexico: Batopilas native-silver locality yielding crystalline native silver in calcite; famed for herringbone and spinel-twinned specimens. - [New South Wales, Australia Locality Guide](https://earthwonders.com/guides/new-south-wales_australia_179339): New South Wales — a mineral province with Broken Hill’s vivid azurite and cerussite, Garrawilla orange zeolites, Prospect prehnite, and Lightning Ridge opal. - [New York, USA Locality Guide](https://earthwonders.com/guides/new-york_usa_179518): New York, USA - diverse mineral provinces from Herkimer quartz to Balmat sphalerite; prized for regional varieties, historic specimens, and zinc-rich lodes. - [Niederschlema, Germany Locality Guide](https://earthwonders.com/guides/niederschlema_germany_180040): Niederschlema, Germany — premier European ore locality for ruby-red sulfosalts, native arsenic and bismuth, and a rare U–Se assemblage; a magnet for ore micros… - [Nigeria Locality Guide](https://earthwonders.com/guides/nigeria_125): Nigeria - a mineral province yielding Nigerian emeralds and green beryl from pegmatites and Jos Plateau granites; prized for color zoning and transparency. - [Nikolaevskiy Mine, Russia Locality Guide](https://earthwonders.com/guides/nikolaevskiy-mine_russia_180214): A collector's guide to Nikolaevskiy Mine, Russia: its geology, mining history and notable minerals, illustrated with the 346 specimens documented from this locality on EarthWonders. - [Niobec mine, Canada Locality Guide](https://earthwonders.com/guides/niobec-mine_canada_180400): Niobec mine, Canada — Saint-Honoré carbonatite locality famed for cabinet baryte crystals: broad, tabular bars with pyrite and occasional fluorite or calcite. - [Norrbotten County, Sweden Locality Guide](https://earthwonders.com/guides/norrbotten-county_sweden_181883): Norrbotten County, Sweden — top locality for Kiruna-type magnetite-apatite and Leveäniemi phosphate pieces, prized for color, contrast, and paragenesis. - [North Carolina, USA Locality Guide](https://earthwonders.com/guides/north-carolina_usa_182091): A collector's guide to North Carolina, USA: its geology, mining history and notable minerals, illustrated with the 101 specimens documented from this locality on EarthWonders. - [Northern Belle pit, USA Locality Guide](https://earthwonders.com/guides/northern-belle-pit_usa_182288): Northern Belle pit, USA - Nevada’s micromineralogical locality at Candelaria, yielding colorful phosphates, cacoxenite and turquoise; prized for micromounts. - [Northern Cape, South Africa Locality Guide](https://earthwonders.com/guides/northern-cape_south-africa_182296): Northern Cape, South Africa - manganese-rich localities (N’Chwaning, Wessels, Aggeneys) yield striking rhodochrosite and sugilite, prized for appearance and co… - [Northern Lights Mine, null Locality Guide](https://earthwonders.com/guides/northern-lights-mine_null_573254): Northern Lights Mine - Nevada locality famed for pale honey aragonite with calcite overgrowth on iron-stained carbonate; prized for its striking carbonates. - [Northern Territory, Australia Locality Guide](https://earthwonders.com/guides/northern-territory_australia_182429): A collector's guide to Northern Territory, Australia: its geology, mining history and notable minerals, illustrated with the 126 specimens documented from this locality on EarthWonders. - [North Geronimo Mine, USA Locality Guide](https://earthwonders.com/guides/north-geronimo-mine_usa_182553): North Geronimo Mine, USA - Arizona's renowned vanadinite and wulfenite locality, producing deep red to orange-red crystals prized by collectors. - [North Kivu, DR Congo Locality Guide](https://earthwonders.com/guides/north-kivu_dr-congo_182649): North Kivu, DR Congo — Rubaya gem elbaite crystals: pink to apple-green, sharp prisms; Lueshe offers rare niobate species; prized for beauty and locality diver… - [North Macedonia Locality Guide](https://earthwonders.com/guides/north-macedonia_128): North Macedonia: Prilep ruby in white marble and Allchar thallium minerals; prized for saturated color, crystal form, and historic collecting appeal. - [North Rhine-Westphalia, Germany Locality Guide](https://earthwonders.com/guides/north-rhine-westphalia_germany_182915): North Rhine-Westphalia, Germany — a dense ore province with Siegerland quartz on siderite, Ramsbeck lead–zinc veins, and Meggen/Mechernich textures prized by c… - [North Waziristan District, Pakistan Locality Guide](https://earthwonders.com/guides/north-waziristan-district_pakistan_183225): North Waziristan District, Pakistan, faden quartz from Miram Shah fissures; sculptural, glassy crystals with Alpine-cleft form and rare fluorvesuvianite. - [Norway Locality Guide](https://earthwonders.com/guides/norway_129): A collector's guide to Norway: its geology, mining history and notable minerals, illustrated with the 115 specimens documented from this locality on EarthWonders. - [Nouristan, Afghanistan Locality Guide](https://earthwonders.com/guides/nouristan_afghanistan_574722): Nouristan, Afghanistan - a pegmatite-rich locality famed for elbaite tourmaline, kunzite, morganite, aquamarine and pocket-rich Paprok, sought by collectors. - [Nova Scotia, Canada Locality Guide](https://earthwonders.com/guides/nova-scotia_canada_183732): Nova Scotia, Canada: classic zeolite locality famed for Bay of Fundy cavity minerals (chabazite, stilbite, analcime) and historic Wasson Bluff collections. - [Novello Mine, Zimbabwe Locality Guide](https://earthwonders.com/guides/novello-mine_zimbabwe_573270): Novello Mine, Zimbabwe — a classic chrysoberyl and alexandrite locality near Masvingo, prized for twinned crystals, alexandrite color change, and its old-Afric… - [Novo Horizonte, Brazil Locality Guide](https://earthwonders.com/guides/novo-horizonte_brazil_573151): Novo Horizonte, Brazil - a classic locality for golden rutile in hydrothermal quartz, epitaxial on hematite with starbursts, plus rare-earth associations. - [N'tola Mine, Republic of the Congo Locality Guide](https://earthwonders.com/guides/ntola-mine_republic-of-the-congo_184044): A collector's guide to N'tola Mine, Republic of the Congo: its geology, mining history and notable minerals, illustrated with the 30 specimens documented from this locality on EarthWonders. - [Nugget Pond Mine, null Locality Guide](https://earthwonders.com/guides/nugget-pond-mine_null_573293): Nugget Pond Mine, Newfoundland - notable Canadian gold locality with pockets of visible native gold in albite-rich matrix, prized for cabinet displays. - [Nuristan, Afghanistan Locality Guide](https://earthwonders.com/guides/nuristan_afghanistan_184385): Nuristan, Afghanistan — premier pegmatite locality yielding kunzite, spodumene, tourmaline, beryl and quartz; prized for vivid color, rarity, and collecting hi… - [Oberdorf, Austria Locality Guide](https://earthwonders.com/guides/oberdorf_austria_184970): Oberdorf, Austria — Classic locality for magnesite with world-class strontianite crystals; prized for sculptural display and rare associated minerals. - [Oceanview Mine, USA Locality Guide](https://earthwonders.com/guides/oceanview-mine_usa_185354): Oceanview Mine, USA — Pala pegmatite locality in California, a gem mine renowned for fresh beryl, kunzite, and elbaite specimens prized by collectors. - [Ocna de Fier, Romania Locality Guide](https://earthwonders.com/guides/ocna-de-fier_romania_574956): A collector's guide to Ocna de Fier, Romania: its geology, mining history and notable minerals, illustrated with the 23 specimens documented from this locality on EarthWonders. - [Ojuela Mine, Mexico Locality Guide](https://earthwonders.com/guides/ojuela-mine_mexico_186119): Ojuela Mine, Mexico — renowned locality for vivid adamite, legrandite, mimetite, and wulfenite; prized for color, crystal habit, and mining heritage. - [Oklahoma, USA Locality Guide](https://earthwonders.com/guides/oklahoma_usa_186244): A collector's guide to Oklahoma, USA: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [Okorusu Mine, Namibia Locality Guide](https://earthwonders.com/guides/okorusu-mine_namibia_186283): Okorusu Mine, Namibia — a premier fluorite locality renowned for lustrous cubes in sea-green to cranberry-purple, with phantom interiors and distinct pockets. - [Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, null Locality Guide](https://earthwonders.com/guides/oktyabrsky-mine-talnakh-cu-ni-deposit-norilsk-talnakh-mining-region_null_573349): A collector's guide to Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, null: its geology, mining history and notable minerals, illustrated with the 52 specimens documented from... - [Old Dominion Mine, USA Locality Guide](https://earthwonders.com/guides/old-dominion-mine_usa_186572): A collector's guide to Old Dominion Mine, USA: its geology, mining history and notable minerals, illustrated with the 40 specimens documented from this locality on EarthWonders. - [Olinghouse Mining District, USA Locality Guide](https://earthwonders.com/guides/olinghouse-mining-district_usa_187321): Olinghouse Mining District — Nevada locality famed for specimen gold, pale-yellow to bright wires and leaves in calcite and quartz, prized by collectors. - [Olivenite](https://earthwonders.com/guides/olivenite): Olivenite, copper arsenate hydroxide; olive to yellow-green crystals with varied habits, prized by collectors from Cornwall to Tsumeb and Cap Garonne. - [Olivenite from Wheal Gorland, Cornwall, UK](https://earthwonders.com/guides/olivenite_from_wheal-gorland_uk_290708): Olivenite - olive-green, acicular and botryoidal crystals from Wheal Gorland, Cornwall; a classic Cornish collector's mineral with copper-ore associations. - [Olivenite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/olivenite_from_tsumeb_namibia_261664): Olivenite from Tsumeb Mine, Namibia — connoisseur’s arsenate prized for olive- to forest-green crystals, dramatic habit, and valuable provenance. - [Olmiite](https://earthwonders.com/guides/olmiite): Olmiite from South Africa’s Kalahari Manganese Field is a manganese silicate prized for warm apricot hues, ember glow, and radial clusters on dark matrix. - [Olmiite from N'Chwaning II Mine, South Africa](https://earthwonders.com/guides/olmiite_from_nchwaning-ii-mine_south-africa_177163): Olmiite - orange-pink radial clusters from N'Chwaning II, the type locality manganese silicate prized for color, architecture, and cabinet-worthy specimens. - [Omaue Mine, Namibia Locality Guide](https://earthwonders.com/guides/omaue-mine_namibia_187641): Omaue Mine, Namibia — emerald-green dioptase in copper-silicate vugs with blue planchéite and shattuckite; a flagship Kaokoveld locality prized by collectors. - [Onderra Mine, null Locality Guide](https://earthwonders.com/guides/onderra-mine_null_573289): A collector's guide to Onderra Mine, null: its geology, mining history and notable minerals, illustrated with the 29 specimens documented from this locality on EarthWonders. - [Ongaing, null Locality Guide](https://earthwonders.com/guides/ongaing_null_573272): Ongaing, Mogok Stone Tract - painite type locality; rare red-brown crystals with ruby-associated paragenesis, highly prized by serious collectors. - [Onganja Mine, South Africa Locality Guide](https://earthwonders.com/guides/onganja-mine_south-africa_187857): Onganja Mine, Namibia — a copper locality famed for cuprite crystals, often with malachite; yields gem-quality cuprite prized by collectors. - [Ontario, Canada Locality Guide](https://earthwonders.com/guides/ontario_canada_187952): A collector's guide to Ontario, Canada: its geology, mining history and notable minerals, illustrated with the 143 specimens documented from this locality on EarthWonders. - [Ontonagon County, USA Locality Guide](https://earthwonders.com/guides/ontonagon-county_usa_187983): Ontonagon County, USA - famed for native copper and silver, diverse mineral styles from Keweenawan lodes to White Pine, and a Lake Superior palette. - [Opal from Ethiopia](https://earthwonders.com/guides/opal_from_ethiopia_57): Opal from Ethiopia — Wollo/Welo opal from Wegel Tena, prized for vivid play-of-color in milky to clear bodies and a distinctive volcanic-hosted origin. - [Opal](https://earthwonders.com/guides/opal): Opal — amorphous silica with water and a spectacular play-of-color; black, boulder, and fire opal varieties capture brightness, color, and collecting appeal. - [Opongguwe Prospect, Kaokoveld Plateau, Namibia Locality Guide](https://earthwonders.com/guides/opongguwe-prospect-kaokoveld-plateau_namibia_573334): A collector's guide to Opongguwe Prospect, Kaokoveld Plateau, Namibia: its geology, mining history and notable minerals, illustrated with the 40 specimens documented from this locality on EarthWonders... - [Oppu Mine, Japan Locality Guide](https://earthwonders.com/guides/oppu-mine_japan_188254): A collector's guide to Oppu Mine, Japan: its geology, mining history and notable minerals, illustrated with the 68 specimens documented from this locality on EarthWonders. - [Orange River, Namibia Locality Guide](https://earthwonders.com/guides/orange-river_namibia_568274): A collector's guide to Orange River, Namibia: its geology, mining history and notable minerals, illustrated with the 218 specimens documented from this locality on EarthWonders. - [Oregon, USA Locality Guide](https://earthwonders.com/guides/oregon_usa_188559): Oregon, USA — a premier mineral province known for thundereggs and agates, type-locality minerals like priceite and josephinite, and diverse collecting culture… - [Orpiment from Shimen Mine, Hunan, China](https://earthwonders.com/guides/orpiment_from_shimen-mine_china_234703): Orpiment from Shimen Mine, Hunan; bright yellow to orange prismatic crystals with calcite and realgar, rare worldwide, a notable arsenic-sulfide classic. - [Orpiment](https://earthwonders.com/guides/orpiment): Orpiment — lemon-yellow arsenic sulfide with silky luster and foliated crystals; prized for color and dramatic display, with notable localities in Nevada, Huna… - [Orpiment from Twin Creeks Mine, Nevada, USA](https://earthwonders.com/guides/orpiment_from_twin-creeks-mine_usa_262985): Orpiment Twin Creeks Mine, Nevada: iconic orange-to-honey yellow crystals with luster, rescued from mining, prized for color, translucency, and quality. - [Orpiment from Quiruvilca District, La Libertad, Peru](https://earthwonders.com/guides/orpiment_from_quiruvilca-district_peru_566937): Orpiment — Quiruvilca, Peru: vivid orange to honey-yellow As2S3 with translucent crystals and chisel terminations, a Peruvian locality prized by collectors. - [Orthoclase](https://earthwonders.com/guides/orthoclase): Orthoclase - classic potassium feldspar with colors from colorless to pink; famed for Carlsbad, Baveno and Manebach twins and Alpine adularia in clefts. - [Orthoclase from Baveno, Italy](https://earthwonders.com/guides/orthoclase_from_baveno_italy_570472): Orthoclase from Baveno, Italy: cream to pink crystals with crisp twins and porcelain luster, prized for architectural geometry and quarry heritage. - [Osceola Mine, USA Locality Guide](https://earthwonders.com/guides/osceola-mine_usa_189431): A collector's guide to Osceola Mine, USA: its geology, mining history and notable minerals, illustrated with the 22 specimens documented from this locality on EarthWonders. - [Otjikotu, Kaokoveld, null Locality Guide](https://earthwonders.com/guides/otjikotu-kaokoveld_null_573337): A collector's guide to Otjikotu, Kaokoveld, null: its geology, mining history and notable minerals, illustrated with the 21 specimens documented from this locality on EarthWonders. - [Otjozondjupa Region, Namibia Locality Guide](https://earthwonders.com/guides/otjozondjupa-region_namibia_189917): Otjozondjupa Region — premier collector locality for vanadates and Zn-Pb deposits, yielding iconic descloizite, vanadinite, and Okorusu fluorite crystals. - [Otjua Mine, Namibia Locality Guide](https://earthwonders.com/guides/otjua-mine_namibia_189919): Otjua Mine, Namibia — a defining tourmaline locality famed for pocket elbaite with polychrome colors and smoky-quartz associations, prized by collectors. - [Oumjrane mining area, Morocco Locality Guide](https://earthwonders.com/guides/oumjrane-mining-area_morocco_190267): Oumjrane mining area, Morocco - a copper district famed for vivid azurite and malachite, and rare native copper pockets, a prized collector locality. - [Ouray County, USA Locality Guide](https://earthwonders.com/guides/ouray-county_usa_190288): Ouray County, USA is a constellation of classic districts with distinctive quartz, sulfides, and rhodochrosite, renowned for mining lore and collecting appeal. - [Ouray Mining District, USA Locality Guide](https://earthwonders.com/guides/ouray-mining-district_usa_190289): A collector's guide to Ouray Mining District, USA: its geology, mining history and notable minerals, illustrated with the 56 specimens documented from this locality on EarthWonders. - [Ouro Preto, Brazil Locality Guide](https://earthwonders.com/guides/ouro-preto_brazil_190306): Ouro Preto, Brazil — world-class imperial topaz from an iron district, plus hematite rose plates and fine euclase crystals, a top collector locality. - [Pachapaqui mining district, Peru Locality Guide](https://earthwonders.com/guides/pachapaqui-mining-district_peru_191143): A collector's guide to Pachapaqui mining district, Peru: its geology, mining history and notable minerals, illustrated with the 115 specimens documented from this locality on EarthWonders. - [Pachapaqui, Peru Locality Guide](https://earthwonders.com/guides/pachapaqui_peru_191142): A collector's guide to Pachapaqui, Peru: its geology, mining history and notable minerals, illustrated with the 27 specimens documented from this locality on EarthWonders. - [Pachigram pegmatite field, Afghanistan Locality Guide](https://earthwonders.com/guides/pachigram-pegmatite-field_afghanistan_191146): Pachigram pegmatite field, Afghanistan — a rare-metal locality famed for pink tourmaline and spodumene in Li-Be-Sn-Nb dykes; prized by collectors for crystals. - [Pack Rat Mine, USA Locality Guide](https://earthwonders.com/guides/pack-rat-mine_usa_191236): Pack Rat Mine, USA - a small, collectible pegmatite near Jacumba, famed for wine-red spessartine on albite, aquamarine and goshenite, and purpurite pockets. - [Padre Paraíso, Brazil Locality Guide](https://earthwonders.com/guides/padre-paraso_brazil_570726): Padre Paraíso, Brazil — a Minas Gerais pegmatite locality famed for aquamarine, heliodor, goshenite, topaz, and quartz; prized glassy prisms and historic gems. - [Pakistan Locality Guide](https://earthwonders.com/guides/pakistan_131): Pakistan - alpine pegmatites yield icy aquamarine on muscovite, Stak Nala tourmaline, and emeralds from Swat, offering dramatic, collectible mineral specimens. - [Palabanda quarries, Republic of the Congo Locality Guide](https://earthwonders.com/guides/palabanda-quarries_republic-of-the-congo_191660): A collector's guide to Palabanda quarries, Republic of the Congo: its geology, mining history and notable minerals, illustrated with the 80 specimens documented from this locality on EarthWonders. - [Pala Chief Mine, USA Locality Guide](https://earthwonders.com/guides/pala-chief-mine_usa_191666): A collector's guide to Pala Chief Mine, USA: its geology, mining history and notable minerals, illustrated with the 91 specimens documented from this locality on EarthWonders. - [Pala Mining District, USA Locality Guide](https://earthwonders.com/guides/pala-mining-district_usa_191689): Pala Mining District, USA — premier gem pegmatite locality in California, known for pink-to-cranberry tourmaline, blue-capped elbaite, morganite, and kunzite. - [Palelni Mine, Myanmar Locality Guide](https://earthwonders.com/guides/palelni-mine_myanmar_191741): A collector's guide to Palelni Mine, Myanmar: its geology, mining history and notable minerals, illustrated with the 100 specimens documented from this locality on EarthWonders. - [Pallaflat Mine, UK Locality Guide](https://earthwonders.com/guides/pallaflat-mine_uk_191848): Pallaflat Mine, UK - West Cumberland hematite locality known for glassy calcite crystals and rare barite, with butterfly twins, prized by collectors. - [Palomo mines, Peru Locality Guide](https://earthwonders.com/guides/palomo-mines_peru_192041): Palomo mines, Peru: a high-altitude epithermal locality famed for red realgar and anorpiment, with orpiment, stibnite, quartz and sulfides prized by collectors. - [Pampa Blanca, Peru Locality Guide](https://earthwonders.com/guides/pampa-blanca_peru_192118): Pampa Blanca, Peru - renowned locality for sculptural epidote on quartz and Japan-law quartz twins; prized by collectors for epidote fans and rare pockets. - [Panasqueira Mines, Portugal Locality Guide](https://earthwonders.com/guides/panasqueira-mines_portugal_192203): Panasqueira Mines, Portugal — premier locality yielding tungsten, ferberite, arsenopyrite, fluorapatite, and colorful quartz associations prized by collectors. - [Panasqueira, Portugal Locality Guide](https://earthwonders.com/guides/panasqueira_portugal_574843): Panasqueira, Portugal, a premier European mineral locality and historic tungsten mine, yields cabinet-quality ferberite in quartz, arsenopyrite rosettes, sider… - [Panjshir, Afghanistan Locality Guide](https://earthwonders.com/guides/panjshir_afghanistan_192341): Panjshir, Afghanistan — emerald-bearing veins yield saturated green emerald prisms set in quartz and altered rock; a classic, collectible alpine locality. - [Papachacra, Argentina Locality Guide](https://earthwonders.com/guides/papachacra_argentina_192486): Papachacra, Argentina - pocket miarolitic pegmatite yielding smoky quartz on microcline, albite, fluorite, and topaz; noted for Nb-Ta-REE minerals and topaz po… - [Paprok, Afghanistan Locality Guide](https://earthwonders.com/guides/paprok_afghanistan_192559): Paprok, Afghanistan - a premier gem pegmatite locality known for color-zoned elbaite tourmalines and a wealth of rare minerals, prized by collectors worldwide. - [Paraíba, Brazil Locality Guide](https://earthwonders.com/guides/paraba_brazil_192717): Paraíba, Brazil - renowned for cuprian elbaite tourmaline of electric blue to blue-green hues, scarce complete crystals, and legendary provenance. - [Pashan quarries, India Locality Guide](https://earthwonders.com/guides/pashan-quarries_india_193467): Pashan quarries, India — classic Pune-area zeolite locality famed for green apophyllite and mesolite on stilbite, prized by collectors for color and form. - [Pasto Bueno, Peru Locality Guide](https://earthwonders.com/guides/pasto-bueno_peru_193578): A collector's guide to Pasto Bueno, Peru: its geology, mining history and notable minerals, illustrated with the 89 specimens documented from this locality on EarthWonders. - [Paterson, USA Locality Guide](https://earthwonders.com/guides/paterson_usa_193668): Paterson, USA — historic New Jersey trap-rock locality yielding prehnite, datolite, pectolite, calcite and zeolites; a classic destination for collectors. - [Payun volcano, null Locality Guide](https://earthwonders.com/guides/payun-volcano_null_573260): Payún Matrú, Argentina - a modern classic locality yielding skeletal martite (hematite) pseudomorphs after magnetite formed in fumaroles; prized by collectors. - [Pea Ridge Mine, USA Locality Guide](https://earthwonders.com/guides/pea-ridge-mine_usa_194394): Pea Ridge Mine, USA - Kiruna-type iron oxide-apatite locality known for smoky calcite, grape-purple fluorite, and rare REE minerals, prized by collectors. - [Pederneira mine, Brazil Locality Guide](https://earthwonders.com/guides/pederneira-mine_brazil_194601): Pederneira mine, Brazil — a lithium-rich tourmaline pegmatite famed for gemmy elbaite pockets, vivid colors, rare sub-localities, and coveted collector pieces. - [Pedra Azul pegmatite district, Brazil Locality Guide](https://earthwonders.com/guides/pedra-azul-pegmatite-district_brazil_568752): Pedra Azul, Brazil — premier aquamarine pegmatite district in Minas Gerais, with saturated blue crystals and fluorapatite and rare herderite; collector favorit… - [Pein-Pyit, Myanmar Locality Guide](https://earthwonders.com/guides/pein-pyit_myanmar_194951): Pein-Pyit, Myanmar — Mogok locality famed for red to purplish-red spinel on calcite and as the type-locality for johnkoivulaite-(Cs), delivering high-contrast… - [Peña Blanca Mine, Colombia Locality Guide](https://earthwonders.com/guides/pea-blanca-mine_colombia_195162): Peña Blanca Mine, Colombia - western emerald belt locality famed for emerald prisms in calcite with quartz, historic trapiche emeralds, and rare fluorite. - [Pendelton Quarry, USA Locality Guide](https://earthwonders.com/guides/pendelton-quarry_usa_195258): Pendelton Quarry, Indiana — renowned for golden to orange-yellow calcite twins from Devonian Jeffersonville Limestone; gemmy amber crystals prized by collector… - [Penfield Quarry, USA Locality Guide](https://earthwonders.com/guides/penfield-quarry_usa_195320): A collector's guide to Penfield Quarry, USA: its geology, mining history and notable minerals, illustrated with the 68 specimens documented from this locality on EarthWonders. - [Penfield, USA Locality Guide](https://earthwonders.com/guides/penfield_usa_195316): Penfield, USA — a classic Lockport Group locality famous for blue, glassy fluorite cubes on white saddle-dolomite, with diverse carbonate minerals in vugs. - [Pennsylvania, USA Locality Guide](https://earthwonders.com/guides/pennsylvania_usa_195495): Pennsylvania, USA locality guide: diverse Appalachian minerals—from pyromorphite to magnetite—historic mines and classic specimens prized by collectors. - [Peridot from Sapat Gali, Pakistan](https://earthwonders.com/guides/peridot_from_sapat-gali_pakistan_228460): Peridot from Sapat Gali, Pakistan — benchmark forsterite crystals with lime-green color, natural terminations, and a prized Himalayan locality. - [Peridot](https://earthwonders.com/guides/peridot): Peridot — olive-green olivine crystals with vivid color and sharp terminations; prized by collectors from mantle xenoliths, Pakistan and Myanmar. - [Peru Locality Guide](https://earthwonders.com/guides/peru_137): A collector's guide to Peru: its geology, mining history and notable minerals, illustrated with the 183 specimens documented from this locality on EarthWonders. - [Pestsovye Keivy, Kol'skiy poluostrov, Russia Locality Guide](https://earthwonders.com/guides/pestsovye-keivy-kolskiy-poluostrov_russia_573328): Pestsovye Keivy, Kol'skiy poluostrov, Russia — renowned metamorphic locality famed for cross-shaped staurolite twins and kyanite-rich schists, highly prized by… - [Pfaffenberg Mine, Germany Locality Guide](https://earthwonders.com/guides/pfaffenberg-mine_germany_196784): Pfaffenberg Mine, Germany - historic Harz locality famed for Neudorf-habit galena on siderite and quartz, with classic cabinet specimens and prized provenance. - [Phenakite](https://earthwonders.com/guides/phenakite): Phenakite - rare Be2SiO4 boasting brilliant luster, high clarity, and gem-like crystals; forms in pegmatites/miarolitic cavities, prized by connoisseurs. - [Phenakite from Mount Antero, USA](https://earthwonders.com/guides/phenakite_from_mt-antero_usa_173263): Mount Antero phenakite - rare, glassy to translucent crystals from Colorado's high-alpine pegmatites; prized for altitude and its collector appeal. - [Phenakite from Mogok Township, Myanmar](https://earthwonders.com/guides/phenakite_from_mogok-township_myanmar_565981): Phenakite from Mogok, Myanmar: colorless, glassy crystals with sharp twinning and drill-bit terminations; provenance from Khetchel–Momeik pegmatites boosts col… - [Phoenix mine, USA Locality Guide](https://earthwonders.com/guides/phoenix-mine_usa_197136): Phoenix mine, USA - a premier locality for native copper, analcime and zeolites; prized for sculptural copper forms and classic Lake Superior associations. - [Phoenix Mine, USA Locality Guide](https://earthwonders.com/guides/phoenix-mine_usa_197141): Phoenix Mine, USA — a premier Michigan locality for sharp native copper and analcime, with copper-included calcite and quartz on basalt, collector favorite. - [Phoenix United Mine, UK Locality Guide](https://earthwonders.com/guides/phoenix-united-mine_uk_197190): Phoenix United Mine, UK - Cornish copper-tin lode yielding chalcosiderite, libethenite, cuprite, malachite; a key type locality with collectible specimens. - [Phosphate Stope, USA Locality Guide](https://earthwonders.com/guides/phosphate-stope_usa_197296): A collector's guide to Phosphate Stope, USA: its geology, mining history and notable minerals, illustrated with the 23 specimens documented from this locality on EarthWonders. - [Phosphophyllite](https://earthwonders.com/guides/phosphophyllite): Phosphophyllite: rare sea-green to mint-blue crystals with glassy luster; fragile (hardness 3.5, perfect cleavage), prized Bolivian specimens and micromounts. - [Phosphophyllite from Cerro de Potosí, Bolivia](https://earthwonders.com/guides/phosphophyllite_from_cerro-de-potos_bolivia_46080): Cerro de Potosí phosphophyllite, Bolivian locality famed for intense sea-green, transparent crystals, classic butterfly twin, old provenance, and rarity. - [Piaotang Mine, China Locality Guide](https://earthwonders.com/guides/piaotang-mine_china_197430): A collector's guide to Piaotang Mine, China: its geology, mining history and notable minerals, illustrated with the 46 specimens documented from this locality on EarthWonders. - [Picher Field, USA Locality Guide](https://earthwonders.com/guides/picher-field_usa_197537): Picher Field, USA - premier lead-zinc locality in the Tri-State District; resinous sphalerite on chert, sharp galena, and prized paragenesis for collectors. - [Picher Field, USA Locality Guide](https://earthwonders.com/guides/picher-field_usa_197536): A collector's guide to Picher Field, USA: its geology, mining history and notable minerals, illustrated with the 32 specimens documented from this locality on EarthWonders. - [Piedmont, Italy Locality Guide](https://earthwonders.com/guides/piedmont_italy_197690): A collector's guide to Piedmont, Italy: its geology, mining history and notable minerals, illustrated with the 84 specimens documented from this locality on EarthWonders. - [Piedmont mine, USA Locality Guide](https://earthwonders.com/guides/piedmont-mine_usa_197700): Piedmont mine, Arizona - famed for azurite-to-malachite specimens with quartz druse; rarity and contrast make it a legend among copper-oxide localities. - [Piedmont Mine, USA Locality Guide](https://earthwonders.com/guides/piedmont-mine_usa_197704): Piedmont Mine, Arizona — famed for malachite pseudomorphs after azurite, coated with quartz; prized for rarity, striking color, and its scarce specimens. - [Piedra Parada, Mexico Locality Guide](https://earthwonders.com/guides/piedra-parada_mexico_197722): Piedra Parada, Mexico - source of Veracruz amethyst; high-mountain pockets yield open lilac to purple quartz with phantoms and scepters against matrix. - [Pierrepont Mine, null Locality Guide](https://earthwonders.com/guides/pierrepont-mine_null_573308): Pierrepont Mine - an eastern high-grade zinc locality in St. Lawrence County, noted for gemmy sphalerite crystals, pale calcite pockets, and rare provenance. - [Pikes Peak, Teller County, USA Locality Guide](https://earthwonders.com/guides/pikes-peak-teller-county_usa_573350): A collector's guide to Pikes Peak, Teller County, USA: its geology, mining history and notable minerals, illustrated with the 76 specimens documented from this locality on EarthWonders. - [Pine Canyon deposit, USA Locality Guide](https://earthwonders.com/guides/pine-canyon-deposit_usa_198352): Pine Canyon, USA — classic fluorite locality renowned for octahedral rose-purple to wine-red crystals on quartz, with green zoning and strong collector appeal. - [Pingtouling Mine, China Locality Guide](https://earthwonders.com/guides/pingtouling-mine_china_573211): Pingtouling Mine, China - Guangdong oxidized lead-zinc locality famed for orange mimetite crystals and scorodite, a prized collecting site. - [Pingwu beryl mine, China Locality Guide](https://earthwonders.com/guides/pingwu-beryl-mine_china_198682): Pingwu beryl mine, China - alpine locality yielding scheelite, cassiterite, aquamarine and goshenite with sharp display crystals; famed Xuebaoding assemblages. - [Pingwu Co., China Locality Guide](https://earthwonders.com/guides/pingwu-co_china_198683): A collector's guide to Pingwu Co., China: its geology, mining history and notable minerals, illustrated with the 370 specimens documented from this locality on EarthWonders. - [Pitorra claim, Brazil Locality Guide](https://earthwonders.com/guides/pitorra-claim_brazil_199392): Pitorra claim, Brazil - defining locality for rose quartz, with gemmy pink prisms, sharp terminations, and specimen-rich clusters prized by collectors. - [Placer County, USA Locality Guide](https://earthwonders.com/guides/placer-county_usa_573167): Placer County, USA: crystallized native gold from Michigan Bluff and Eagle's Nest; sculptural specimens with strong locality character and collectible appeal. - [Planggenstock, Switzerland Locality Guide](https://earthwonders.com/guides/planggenstock_switzerland_199838): Planggenstock, Switzerland — Alpine fissure locality famed for giant quartz and smoky quartz, with rare pink fluorite perched on quartz, prized by collectors. - [Plateau, Nigeria Locality Guide](https://earthwonders.com/guides/plateau_nigeria_199929): Plateau, Nigeria - Jos Plateau locality yielding phenakite, aquamarine, beryl, topaz, cassiterite; prized for gem rough aesthetics, rarity, and provenance. - [Plumbogummite from Yangshuo Mine, China](https://earthwonders.com/guides/plumbogummite_from_yangshuo-mine_china_296443): Plumbogummite — pale sky-blue crystals and pyromorphite cores, sculptural replacements from the Guilin–Gongcheng district; notable locality notes for collector… - [Plumbogummite](https://earthwonders.com/guides/plumbogummite): Plumbogummite — sky-blue to turquoise botryoidal coatings and pseudomorphs after pyromorphite; prized for sharp blue pseudomorphs and vivid botryoidal forms. - [Poggio Balate, Italy Locality Guide](https://earthwonders.com/guides/poggio-balate_italy_200760): Poggio Balate, Italy — fluorite-barite locality producing cobalt-blue to blue-green cubic fluorite with zoning and baryte rosettes, prized by collectors. - [Pöhla, Germany Locality Guide](https://earthwonders.com/guides/phla_germany_200814): Pöhla, Germany — Western Erzgebirge locality famed for honey-yellow barite and fluorite-barite veins, native silver and arsenic, plus historic tin-skarn and ur… - [Pöhla-Tellerhäuser Mine, Germany Locality Guide](https://earthwonders.com/guides/phla-tellerhuser-mine_germany_200815): A collector's guide to Pöhla-Tellerhäuser Mine, Germany: its geology, mining history and notable minerals, illustrated with the 105 specimens documented from this locality on EarthWonders. - [Pohndorf Mine, USA Locality Guide](https://earthwonders.com/guides/pohndorf-mine_usa_200819): Pohndorf Mine, USA: iconic gem pegmatite yielding scepter amethyst atop tourmalinated quartz; prized for rare, visually dramatic crystals. - [Poland Locality Guide](https://earthwonders.com/guides/poland_139): Poland - a key locality guide highlighting Wieliczka halite, Machów celestine, sulfur minerals, and Upper Silesia zincite, with collecting appeal and diversity. - [Pomba Pit, Serra das Éguas, Brazil Locality Guide](https://earthwonders.com/guides/pomba-pit-serra-das-guas_brazil_573212): Pomba Pit, Serra das Éguas, Brazil — classic magnesite locality and collector landmark, with white to colorless magnesite rhombohedra and gemmy tourmaline. - [Porco, Bolivia Locality Guide](https://earthwonders.com/guides/porco_bolivia_202009): Porco, Bolivia — historic high-altitude silver locality famed for native silver wires and crystalline curls, with acanthite, pyrargyrite, stephanite, and dense… - [Porcupine Pocket, Pederneira Mine, São José da Safira, Brazil Locality Guide](https://earthwonders.com/guides/porcupine-pocket-pederneira-mine-so-jos-da-safira_brazil_573351): A collector's guide to Porcupine Pocket, Pederneira Mine, São José da Safira, Brazil: its geology, mining history and notable minerals, illustrated with the 20 specimens documented from this locality... - [Portland Mine, USA Locality Guide](https://earthwonders.com/guides/portland-mine_usa_202406): Portland Mine, USA - Cripple Creek locality known for high-grade gold-telluride ore with telluride blades on quartz and purple fluorite. - [Portugal Locality Guide](https://earthwonders.com/guides/portugal_140): Portugal - diverse mineral localities from Panasqueira's black ferberite and fluorapatite to uranium-bearing crystals, offering rare, collectible specimens. - [Poteryaevskoe Mine, null Locality Guide](https://earthwonders.com/guides/poteryaevskoe-mine_null_573262): Poteryaevskoe Mine, Altai Krai, Russia – renowned oxidation-zone deposit yielding cuprite, native copper, azurite, malachite, and iodides, prized by collectors. - [Potosí, Bolivia Locality Guide](https://earthwonders.com/guides/potos_bolivia_202817): Potosí, Bolivia — famed silver-tin polymetallic locality, home to luminous blue-green phosphophyllite crystals, mining history, and strong collecting appeal. - [Potosí Mine, Mexico Locality Guide](https://earthwonders.com/guides/potos-mine_mexico_202831): Potosí Mine, Mexico - classic West Camp locality famed for rose-pink rhodochrosite, sharp pyrrhotite, and rich hemimorphite pockets, sought by collectors. - [Potosi Mine, USA Locality Guide](https://earthwonders.com/guides/potosi-mine_usa_202824): Potosi Mine, USA — Nevada locality known for arsenopyrite-rich ore oxidized to scorodite, carminite, and jarosite; sought for fine microcrystals and color. - [Poudrette Quarry, Canada Locality Guide](https://earthwonders.com/guides/poudrette-quarry_canada_202934): Poudrette Quarry, Canada — Mont Saint-Hilaire locality famed for diverse rare minerals (serandite, carletonite, analcime) from pegmatites, prized by collectors. - [Poudrette Quarry, null Locality Guide](https://earthwonders.com/guides/poudrette-quarry_null_573261): Poudrette Quarry, Mont Saint-Hilaire, Québec: defining mineral locality with diverse alkaline rocks, yielding world-class serandite, analcime, carletonite. - [Powellite](https://earthwonders.com/guides/powellite): Powellite (CaMoO4) - sharp tetragonal crystals colorless to honey amber, famed for yellow-green fluorescence under shortwave UV; prized by collectors. - [Powellite from Pandulena Hills, Nashik District, India](https://earthwonders.com/guides/powellite_from_pandulena-hills_india_192266): Powellite from Pandulena Hills, Nashik, India; signature Deccan Trap crystals, yellow to amber tetragonal forms, strong fluorescence, prized by collectors. - [Power's Farm, USA Locality Guide](https://earthwonders.com/guides/powers-farm_usa_203170): Power's Farm, USA, Pierrepont's black tourmaline locality with jet-black, lustrous crystals from calcite veins; prized for sculptural form and collecting appea… - [Prehnite from Merelani Hills, Tanzania](https://earthwonders.com/guides/prehnite_from_merelani-hills_tanzania_162307): Merelani Hills prehnite, Tanzania: glossy translucent crystals on black graphite, lemon-to-mint colors, and a prized locality with context for collectors. - [Prehnite](https://earthwonders.com/guides/prehnite): Prehnite — apple- to mint-green crystals and sculptural botryoidal/rosette forms; a calcium aluminum silicate formed in low-temp hydrothermal environments. - [Prehnite from Prospect Park Quarry, New Jersey, USA](https://earthwonders.com/guides/prehnite_from_prospect-park-quarry_usa_204689): Prospect Park Quarry, New Jersey, USA - prehnite famed for apple- to mint-green, translucent botryoidal forms, hollow casts, and standout collector appeal. - [Příbram, Czech Republic Locality Guide](https://earthwonders.com/guides/pbram_czech-republic_203885): Příbram, Czech Republic — historic mining locality famed for silver-base metal veins and a uranium district yielding uraninite, coffinite, and rare selenides. - [Prince of Wales Island, USA Locality Guide](https://earthwonders.com/guides/prince-of-wales-island_usa_204144): A collector's guide to Prince of Wales Island, USA: its geology, mining history and notable minerals, illustrated with the 146 specimens documented from this locality on EarthWonders. - [Proaño Mine, Mexico Locality Guide](https://earthwonders.com/guides/proao-mine_mexico_204376): A collector's guide to Proaño Mine, Mexico: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [Prospect Park Quarry, USA Locality Guide](https://earthwonders.com/guides/prospect-park-quarry_usa_204689): Prospect Park Quarry, USA — renowned for green prehnite with hollow epimorphs, rich basalt cavities, and a key collector locality in Paterson–Passaic County. - [Proustite](https://earthwonders.com/guides/proustite): Proustite: ruby-silver trigonal prisms with deep crimson color and gemmy glow; photosensitive, prized for backlit cherry-red interiors and hydrothermal deposit… - [Proustite from Uchucchacua Mine, Peru](https://earthwonders.com/guides/proustite_from_uchucchacua-mine_peru_263450): Proustite from the Uchucchacua Mine occupies a special place among modern “ruby silver” specimens: it is not usually the biggest proustite in the world, but the best pieces have a unmistakable Uchucch... - [Pugh Quarry, USA Locality Guide](https://earthwonders.com/guides/pugh-quarry_usa_205211): A collector's guide to Pugh Quarry, USA: its geology, mining history and notable minerals, illustrated with the 27 specimens documented from this locality on EarthWonders. - [Puiva Mount, Russia Locality Guide](https://earthwonders.com/guides/puiva-mount_russia_205255): Puiva Mount, Russia — alpine-cleft locality in the Subpolar Urals, famed for axinite-(Fe) crystals on quartz, with historic large pockets up to 20 cm. - [Pulsifer Quarry, Auburn, null Locality Guide](https://earthwonders.com/guides/pulsifer-quarry-auburn_null_573366): Pulsifer Quarry, Auburn, Maine — classic American locality for royal-purple fluorapatite; famed miarolitic pockets and a storied collecting pedigree. - [Pumpkin Hollow Mine, Yerington, Lyon County, USA Locality Guide](https://earthwonders.com/guides/pumpkin-hollow-mine-yerington-lyon-county_usa_574683): A collector's guide to Pumpkin Hollow Mine, Yerington, Lyon County, USA: its geology, mining history and notable minerals, illustrated with the 25 specimens documented from this locality on EarthWonde... - [Pune District, India Locality Guide](https://earthwonders.com/guides/pune-district_india_205513): A collector's guide to Pune District, India: its geology, mining history and notable minerals, illustrated with the 445 specimens documented from this locality on EarthWonders. - [Pyingyi Taung, Myanmar Locality Guide](https://earthwonders.com/guides/pyingyi-taung_myanmar_206021): Pyingyi Taung, Myanmar - rare-element pegmatite locality famed for stocky rubellite and elbaite tourmalines, plus lepidolite, beryl, and cesium-rich minerals. - [Pyrargyrite](https://earthwonders.com/guides/pyrargyrite): Pyrargyrite - ruby-silver with deep red color in transmitted light, dark reflective surface, and sharp trigonal prisms on matrix; scarce, highly collectible. - [Pyrargyrite from Fresnillo Municipality, Zacatecas, Mexico](https://earthwonders.com/guides/pyrargyrite_from_fresnillo-municipality_mexico_87924): Fresnillo pyrargyrite: dark, lustrous trigonal crystals from steel-black to red backlit; cabinet-quality habit and a key Mexican silver-ore history. - [Pyrargyrite from St Andreasberg Mining District, Germany](https://earthwonders.com/guides/pyrargyrite_from_st-andreasberg-mining-district_germany_244763): St Andreasberg pyrargyrite, Harz Mountains, Germany; famed for dark ruby-silver crystals, sharp forms, and historic cabinet pieces prized by collectors. - [Pyrite from Huanzala Mine, Peru](https://earthwonders.com/guides/pyrite_from_huanzala-mine_peru_94627): Huanzala Mine, Peru - premier pyrite locality, producing bright brass crystals in cubes and pyritohedrons; abundant yet sculptural pieces prized by collectors. - [Pyrite from Navajn, Spain](https://earthwonders.com/guides/pyrite_from_navajun_spain_176725): Navajún pyrite, La Rioja, Spain - iconic cubic crystals with sharp edges and mirror-bright luster from marlstone; prized for geometry and the famed locality. - [Pyrite](https://earthwonders.com/guides/pyrite): Pyrite: brilliant metallic luster, perfect cubes, and golden color; collectors prize affordable pieces to top specimens, with Navajún and Huanzala localities. - [Pyrite from Sparta, USA](https://earthwonders.com/guides/pyrite_from_sparta_usa_243405): Sparta pyrite, Illinois - renowned sunburst disks from Pennsylvanian shales; multi-inch, display-quality radiating crystals, prized for locality and size. - [Pyrite from Spain](https://earthwonders.com/guides/pyrite-from_spain): Navajún pyrite — renowned cubed crystals from Spain, valued for perfect facets, large interlocking cubes up to 15 cm, and careful collection and restoration. - [Pyrite from Huanzala Mine](https://earthwonders.com/guides/pyrite-from_huanzala-mine_peru_94627): Huanzala pyrite from Peru's Huallanca yields cube forms and pyritohedrons with metallic luster; prized for interpenetrant twins, display, and care guidance. - [Pyrite from Sparta](https://earthwonders.com/guides/pyrite-from_sparta_usa_243405): Pyrite suns - Illinois, Sparta, Randolph County disc-shaped pyrite with sun radiating patterns and golden luster; rare discs; store to prevent oxidation. - [Pyrolusite](https://earthwonders.com/guides/pyrolusite): Pyrolusite - jet-black crystals and dramatic pseudomorphs with steel luster; prized display pieces from storied Mn deposits, Ilfeld and the Kalahari Field. - [Pyrolusite from Ilfeld, Thuringia, Germany](https://earthwonders.com/guides/pyrolusite_from_ilfeld_germany_116736): Ilfeld pyrolusite: classic European manganese locality in Thuringia, famed for steel-gray fibrous and acicular crystals, cabinet pieces, and collector appeal. - [Pyromorphite from Minas del Horcajo, Spain](https://earthwonders.com/guides/pyromorphite_from_minas-del-horcajo_spain_165241): Minas del Horcajo, Spain — Pyromorphite from a mining locality, famed for green hexagonal prisms, color zoning, and historic collector provenance. - [Pyromorphite from Les Farges Mine, France](https://earthwonders.com/guides/pyromorphite_from_les-farges-mine_france_143547): Pyromorphite from Les Farges Mine, France - olive to yellow-green barrel prisms with sculptural crusts; prized for rarity and its brief collecting window. - [Pyromorphite from Bad Ems, Germany](https://earthwonders.com/guides/pyromorphite_from_bad-ems_germany_14911): Pyromorphite from Bad Ems, Germany — European lead mineral, squat lustrous prisms in olive to brown hues, famed old-mine locality and collector appeal. - [Pyromorphite from Wheatley Mines, USA](https://earthwonders.com/guides/pyromorphite_from_wheatley-mines_usa_291014): Wheatley Mines pyromorphite - classic eastern U.S. locality with grass-green crystals on iron-stained matrix; sharp hexagonal barrels and collector appeal. - [Pyromorphite from Roughton Gill Mine, England](https://earthwonders.com/guides/pyromorphite_from_roughton-gill-mine_uk_217916): Roughton Gill Mine, England - Classic Lake District locality yielding pyromorphite with yellow-green to oil-green crystals and long-standing collector appeal. - [Pyromorphite](https://earthwonders.com/guides/pyromorphite): Pyromorphite - neon apple-green to olive crystals with resinous luster, in pipe-organ clusters; prized for color, texture, and European to Chinese localities. - [Pyromorphite from Daoping Mine, China](https://earthwonders.com/guides/pyromorphite_from_daoping-mine_china_63946): Pyromorphite from Daoping Mine, China: vivid lime-green prisms, hopper terminations, and architectural clusters; a modern, sought-after source for collectors. - [Pyrrhotite](https://earthwonders.com/guides/pyrrhotite): Pyrrhotite - bronze lustre sulfide with sharp hex plates and magnetism; prized by collectors for dramatic aesthetics, notable localities, and care tips. - [Pyrrhotite from Huanzala Mine, Peru](https://earthwonders.com/guides/pyrrhotite_from_huanzala-mine_peru_114500): Huanzala Mine, Peru — a premier locality for pyrite, fluorite, sphalerite, galena, and quartz; pyrrhotite is rare, often preserved as pseudomorphs. - [Pyrrhotite from Nikolaevskiy Mine, Dal’negorsk, Russia](https://earthwonders.com/guides/pyrrhotite_from_nikolaevskiy-mine_russia_180214): Pyrrhotite from Nikolaevskiy Mine, Dal’negorsk, Russia — brassy luster with sharp pseudohex plates, notable Dal’negorsk specimens, collector-scale crystals. - [Pyrrhotite from Trepča Stari Trg Mine, Kosovo](https://earthwonders.com/guides/pyrrhotite_from_trepca-stari-trg-mine_kosovo_260391): Pyrrhotite from Trepča Stari Trg Mine, Kosovo — bronze to yellow-brown plates with pseudo-hexagonal crystals, prized for locality context and dramatic display. - [Qala e Naw District, Afghanistan Locality Guide](https://earthwonders.com/guides/qala-e-naw-district_afghanistan_567740): Qala e Naw District, Afghanistan — Laman celestine deposit yields blue celestine on calcite, an architectural, color-rich locality prized by collectors for rar… - [Qalat Payeen, Iran Locality Guide](https://earthwonders.com/guides/qalat-payeen_iran_573217): Qalat Payeen, Iran - a modern locality famed for zunyite crystals: red-brown tetrahedra set in a hematite-rich matrix from a Hormuz salt-dome near Bandar Abbas. - [Qinglong County, China Locality Guide](https://earthwonders.com/guides/qinglong-county_china_206365): Qinglong County, China - antimony-gold district famed for stibnite blades, barcode-fluorite cubes, quartz, and diverse secondary minerals across Dachang mines. - [Qinglong Mine, China Locality Guide](https://earthwonders.com/guides/qinglong-mine_china_206369): A collector's guide to Qinglong Mine, China: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Qinglong Mine, China Locality Guide](https://earthwonders.com/guides/qinglong-mine_china_206370): A collector's guide to Qinglong Mine, China: its geology, mining history and notable minerals, illustrated with the 62 specimens documented from this locality on EarthWonders. - [Quanzhou, China Locality Guide](https://earthwonders.com/guides/quanzhou_china_206590): Quanzhou, China locality guide: blue-violet fluorite on quartz from Yongchun and Dehua, with saturated violet-blue crystals, glassy faces, and clear labeling n… - [Quartz from Herkimer County, USA](https://earthwonders.com/guides/quartz_from_herkimer-county_usa_108885): Herkimer Quartz, Herkimer County, New York - iconic doubly terminated crystals, glassy and water-clear, prized for locality variety and collector appeal. - [Quartz from Goboboseb Mountains, Namibia](https://earthwonders.com/guides/quartz_from_goboboseb-mountains_namibia_94627): Quartz from Goboboseb Mountains, Namibia — glassy color-zoned crystals with amethyst and smoky zones, plus phantoms and fluid inclusions prized by collectors. - [Quartz from Hallelujah Junction, USA](https://earthwonders.com/guides/quartz_from_hallelujah-junction_usa_196454): Quartz from Hallelujah Junction, USA - smoky scepters with caps, phantoms, and color zoning from granodiorite pockets; a sculptural, collector-favorite localit… - [Quartz from Grimsel area, Switzerland](https://earthwonders.com/guides/quartz_from_grimsel-area_switzerland_101249): Grimsel quartz — Alpine classic from Grimsel, Bern: sharp, glassy rock crystals and smoky varieties, famed for gwindel growth and collector appeal. - [Quartz from Yaogangxian Mine, China](https://earthwonders.com/guides/quartz_from_yaogangxian-mine_china_296590): Yaogangxian Mine quartz, China — famed for pale quartz with purple fluorite cubes set in a tungsten-tin hydrothermal system; a premier locality for collectors. - [Quartz](https://earthwonders.com/guides/quartz): Quartz - a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine. - [Quartz from Orange River, Southern Africa](https://earthwonders.com/guides/quartz_from_orange-river_namibia_568274): Orange River quartz - hematite-bearing quartz with red phantoms, brick-red cores, and clear overgrowths; a district-wide classic with amethyst variants. - [Quartz from Brandberg Area, Namibia](https://earthwonders.com/guides/quartz_from_brandberg-area_namibia_33199): Brandberg quartz from Namibia features glassy luster, transparent trigonal crystals, and dramatic color zoning; prized for locality and collector appeal. - [Quartz from Cavradi Gorge, Switzerland](https://earthwonders.com/guides/quartz_from_cavradi-gorge_switzerland_44808): Cavradi Gorge quartz, Switzerland - clear, glassy crystals with hematite and red rutile on gneiss, a famed Alpine locality prized by serious collectors. - [Quartz from Dalnegorsk, Russia](https://earthwonders.com/guides/quartz_from_dalnegorsk_russia_63378): Quartz from Dalnegorsk, Russia: pale lavender amethyst and clear prisms in skarn, with fluorite and sulfides; prized for locality character and dramatic beauty. - [Quartz from Mount Ida Mountain Mine, Arkansas, USA](https://earthwonders.com/guides/quartz_from_mount-ida-mountain-mine_usa_172337): Quartz from Mount Ida Mountain Mine, Arkansas - classic, glassy rock crystals with sharp prisms and icy luster from a historic Ouachita pocket-rich locality. - [Quartzite Mountain, USA Locality Guide](https://earthwonders.com/guides/quartzite-mountain_usa_207002): Quartzite Mountain, USA locality: andradite garnets in skarn near Stanley Butte; olive-green to bronze crystals in quartz, prized for rarity and provenance. - [Québec, Canada Locality Guide](https://earthwonders.com/guides/qubec_canada_207146): A collector's guide to Québec, Canada: its geology, mining history and notable minerals, illustrated with the 103 specimens documented from this locality on EarthWonders. - [Queen of Green Pocket, UK Locality Guide](https://earthwonders.com/guides/queen-of-green-pocket_uk_207309): Queen of Green Pocket, UK - a Diana Maria fluorite pocket in Rogerley Quarry, yielding gemmy green fluorite with daylight fluorescence and sharp twins. - [Queensland, Australia Locality Guide](https://earthwonders.com/guides/queensland_australia_207372): A collector's guide to Queensland, Australia: its geology, mining history and notable minerals, illustrated with the 143 specimens documented from this locality on EarthWonders. - [Quincy Mine, USA Locality Guide](https://earthwonders.com/guides/quincy-mine_usa_207641): Quincy Mine, USA — Keweenaw locality famed for native copper in glassy calcite, peach-to-orange inclusions, arborescent copper, and datolite nodules prized by… - [Quiruvilca Mine, Peru Locality Guide](https://earthwonders.com/guides/quiruvilca-mine_peru_207770): Quiruvilca Mine, Peru - a high, cold Cu-Pb-Zn-Ag-Au vein locality famed for orange orpiment on barite, black hutchinsonite needles, and sulfide associations. - [Quỳ Châu District, Vietnam Locality Guide](https://earthwonders.com/guides/qu-chu-district_vietnam_571978): Quỳ Châu District, Vietnam — a gem belt famed for ruby and sapphire, yet collectors prize pegmatite aquamarine and etched beryl crystals from Deo Sen. - [Racalmuto, Italy Locality Guide](https://earthwonders.com/guides/racalmuto_italy_207955): Racalmuto, Italy — famed Sicilian sulfur locality in evaporite beds; bright yellow sulfur on aragonite and calcite, with rare melanophlogite and provenance. - [Rahuri, India Locality Guide](https://earthwonders.com/guides/rahuri_india_573218): Rahuri, India — Deccan Traps locality yielding green fluorapophyllite-(K) rosettes on stilbite; historic 2001 finds and striking disco-ball crystals for collec… - [R. A. Kosnar claim, USA Locality Guide](https://earthwonders.com/guides/r-a-kosnar-claim_usa_208717): R. A. Kosnar claim, USA — Lake George area locality yielding amazonite and smoky quartz; prized old Colorado stock pieces with strong color and provenance. - [Rampgill Mill, UK Locality Guide](https://earthwonders.com/guides/rampgill-mill_uk_208946): A collector's guide to Rampgill Mill, UK: its geology, mining history and notable minerals, illustrated with the 70 specimens documented from this locality on EarthWonders. - [Rancho Coyamito Chihuahua, Mexico Locality Guide](https://earthwonders.com/guides/rancho-coyamito-chihuahua_mexico_573120): Rancho Coyamito, Chihuahua, Mexico; renowned agate locality featuring Coyamito Agate: banded nodular chalcedony, vivid color zones, and dramatic pseudomorphs. - [Rapid Creek, Canada Locality Guide](https://earthwonders.com/guides/rapid-creek_canada_573273): Rapid Creek, Canada — a remote sediment-hosted phosphate locality famed for saturated blue lazulite crystals and the type locality for rare phosphate species. - [Ras Koh Mountains, Pakistan Locality Guide](https://earthwonders.com/guides/ras-koh-mountains_pakistan_209512): Ras Koh Mountains, Pakistan - remote locality famed for brookite from Zard Mountain and Maldin Koh epidote, prized for sharp crystals and magnetic inclusions. - [Ratnapura, Sri Lanka Locality Guide](https://earthwonders.com/guides/ratnapura_sri-lanka_573153): Ratnapura, Sri Lanka — classic collector locality for sapphires, corundum, spinel and chrysoberyl from ancient placer gravels; historic and productive. - [Rayas, Mexico Locality Guide](https://earthwonders.com/guides/rayas_mexico_209966): Rayas, Mexico — Guanajuato silver locality famed for acanthite and other silver sulfides on pale gangue, with mining lore and strong collector appeal. - [Ray Mine, USA Locality Guide](https://earthwonders.com/guides/ray-mine_usa_209997): Ray Mine, USA — Arizona copper locality famed for bladed native copper twins, chrysocolla, cuprite, and desert-copper specimens prized by collectors. - [Realgar](https://earthwonders.com/guides/realgar): Realgar collectors guide: fiery red, glassy crystals prized for color and rarity; fragile, light-sensitive, and toxic—preserve quality with care. - [Red Cloud Mine, USA Locality Guide](https://earthwonders.com/guides/red-cloud-mine_usa_210568): Red Cloud Mine, USA - Arizona wulfenite locality famed for glassy red-orange crystals, photogenic pockets, and historic collector-focused significance. - [Red Lead Mine, Australia Locality Guide](https://earthwonders.com/guides/red-lead-mine_australia_210916): Red Lead Mine, Australia - Tasmanian crocoite hub famed for gemmy scarlet-red prisms on dark gossan, rare associated minerals, and strong collecting appeal. - [Red Ledge Mine, USA Locality Guide](https://earthwonders.com/guides/red-ledge-mine_usa_210921): Red Ledge Mine, USA, gold locality famed for bright leaf gold in quartz pockets; rare chromite ore and redledgeite type locality, prized by collectors. - [Red River Floodway, null Locality Guide](https://earthwonders.com/guides/red-river-floodway_null_573267): Red River Floodway, Manitoba: gypsum rosettes (selenite) from glacial Lake Agassiz clays; amber blades, gem-like transparency, and limited pockets. - [Reel Mine, USA Locality Guide](https://earthwonders.com/guides/reel-mine_usa_211454): Reel Mine, USA — NC amethyst locality famed for cabinet-quality amethyst sprays, smoky quartz, and sharp three-dimensional clusters prized by collectors. - [Remedios Mine, Mexico Locality Guide](https://earthwonders.com/guides/remedios-mine_mexico_211969): Remedios Mine, Mexico: Taxco locality famed for pink rhodochrosite on quartz, rare paragenesis with ilvaite and galena, and old-mine specimens for collectors. - [Renéville, Republic of the Congo Locality Guide](https://earthwonders.com/guides/renville_republic-of-the-congo_572534): Renéville, Republic of the Congo — renowned dioptase locality with emerald crystals in dark copper-silicate matrix, often with chrysocolla and cuprite. - [Rensselaer Quarry, USA Locality Guide](https://earthwonders.com/guides/rensselaer-quarry_usa_212194): Rensselaer Quarry, USA — famed for brassy pyrite and marcasite in oil-stained dolostone, with epitaxial marcasite overgrowths on pyrite. - [Resplendor, Brazil Locality Guide](https://earthwonders.com/guides/resplendor_brazil_212386): Resplendor, Brazil — classic pegmatite locality yielding gem spodumene, goshenite, aquamarine/beryl, elbaite, quartz; renowned for pale, color-zoned crystals. - [Resuperferolitica Mine, Spain Locality Guide](https://earthwonders.com/guides/resuperferolitica-mine_spain_212423): A collector's guide to Resuperferolitica Mine, Spain: its geology, mining history and notable minerals, illustrated with the 31 specimens documented from this locality on EarthWonders. - [Reward Mine, USA Locality Guide](https://earthwonders.com/guides/reward-mine_usa_568904): Reward Mine, California, a premier oxidized lead-copper locality famed for electric blue caledonite in quartz pockets, with linarite, cerussite, and rare arsen… - [Rex Mine, Gold Hill, Gold Hill District, Boulder County, USA Locality Guide](https://earthwonders.com/guides/rex-mine-gold-hill-gold-hill-district-boulder-county_usa_574674): A collector's guide to Rex Mine, Gold Hill, Gold Hill District, Boulder County, USA: its geology, mining history and notable minerals, illustrated with the 34 specimens documented from this locality o... - [Rhineland-Palatinate, Germany Locality Guide](https://earthwonders.com/guides/rhineland-palatinate_germany_212857): Rhineland-Palatinate, Germany — a collector’s province famed for Landsberg cinnabar and native mercury, Bad Ems lead-zinc-silver veins, and the Eifel’s blue ha… - [Rhodochrosite](https://earthwonders.com/guides/rhodochrosite): Rhodochrosite: deep pink to rich red manganese carbonate with vitreous crystals, diverse crystal habits, and renowned localities prized by collectors. - [Rhodochrosite from Nchwaning Mines, South Africa](https://earthwonders.com/guides/rhodochrosite_from_nchwaning-mines_south-africa_177165): Rhodochrosite from N'Chwaning Mines, South Africa: intensely colored, gemmy crystals on manganite, renowned among collectors for form and rarity. - [Rhodonite from Broken Hill, Australia](https://earthwonders.com/guides/rhodonite_from_broken-hill_australia_34725): Broken Hill rhodonite, Australia — vivid red crystals in a famed silver-lead-zinc ore system, often with galena and spessartine; a premier locality for collect… - [Rhodonite](https://earthwonders.com/guides/rhodonite): Rhodonite—a manganese silicate famed for rose-pink color with black manganese oxide veining, prized crystals, notable localities, and strong collecting appeal. - [Riemvasmaak, South Africa Locality Guide](https://earthwonders.com/guides/riemvasmaak_south-africa_213645): Riemvasmaak, South Africa - a remote Northern Cape locality famous for emerald to lime green octahedral fluorite on quartz, prized by collectors for color, siz… - [Rio Grande do Sul, Brazil Locality Guide](https://earthwonders.com/guides/rio-grande-do-sul_brazil_214176): Rio Grande do Sul, Brazil - famed for amethyst in basalt geodes and classic agate geodes, with dark rinds, pale chalcedony bands, and strong lapidary appeal. - [Rio Marina, Italy Locality Guide](https://earthwonders.com/guides/rio-marina_italy_214231): Rio Marina, Italy — a classic Elba iron locality famed for lustrous hematite crystals, pyrite on dark matrix, and ilvaite type locality, prized by collectors. - [Roata Mine, Romania Locality Guide](https://earthwonders.com/guides/roata-mine_romania_215176): Roata Mine, Romania — Cavnic-area locality in Maramureș, with native gold in quartz/calcite, yellow/blue barite, and stibnite pockets, prized for gangue. - [Rock Candy Mine, Canada Locality Guide](https://earthwonders.com/guides/rock-candy-mine_canada_215722): A collector's guide to Rock Candy Mine, Canada: its geology, mining history and notable minerals, illustrated with the 29 specimens documented from this locality on EarthWonders. - [Rogerley Mine, UK Locality Guide](https://earthwonders.com/guides/rogerley-mine_uk_216344): Rogerley Mine, UK — a defining modern fluorite locality in Weardale, yielding emerald-green daylight-fluorescent cubes, often twinned on quartz. - [Rogerley Quarry, UK Locality Guide](https://earthwonders.com/guides/rogerley-quarry_uk_216345): Rogerley Quarry, UK: emerald-green fluorite crystals with glassy cubes and blue daylight fluorescence; a historic, collector-favored Pennine locality. - [Romania Locality Guide](https://earthwonders.com/guides/romania_143): Romania — classic European ore fields, with Baia Mare–Gutâi and Apuseni riches like tellurides, stibnite, and gold-silver specimens, prized for parageneses. - [Ron Coleman Mine, USA Locality Guide](https://earthwonders.com/guides/ron-coleman-mine_usa_573302): Ron Coleman Mine, USA, a Ouachita quartz locality known for water-clear, glassy prisms from large veins, with WWII production history and collecting appeal. - [Rosasite from Ojuela Mine, Mexico](https://earthwonders.com/guides/rosasite_from_ojuela-mine_mexico_186119): Rosasite from the Ojuela Mine, Mexico - blue-green botryoidal crystals in iron-oxide vugs, vivid color and velvety textures, a standout oxidized carbonate. - [Rosasite](https://earthwonders.com/guides/rosasite): Rosasite — copper-zinc carbonate hydroxide with vivid blue-green, velvety botryoids; prized for color, texture, and classic localities like Laurion and Ojuela. - [Rosasite from Tsumeb, Namibia](https://earthwonders.com/guides/rosasite_from_tsumeb_namibia_261664): Tsumeb, Namibia - rosasite from this famed locality, prized for silky blue-green coatings, complex paragenesis with azurite and malachite, and collector appeal. - [Rosenberg Mine, Germany Locality Guide](https://earthwonders.com/guides/rosenberg-mine_germany_217288): Rosenberg Mine, Germany — a historic locality famed for pyromorphite crystals in brown to green hues; prized for dense druses, barrel-like forms, and provenanc… - [Rose Quartz from Galiléia, Minas Gerais, Brazil](https://earthwonders.com/guides/rose-quartz_from_galilia_brazil_89655): Rose Quartz from Galiléia, Minas Gerais, Brazil — rare euhedral pink crystals with glassy faces, prized for crystallization, color, and Brazilian locality. - [Rose Quartz from Ilha claim, Minas Gerais, Brazil](https://earthwonders.com/guides/rose-quartz_from_ilha-claim_brazil_116745): Rose Quartz, Ilha claim, Minas Gerais, Brazil: pink, translucent crystals in pegmatite pockets, often with eosphorite; a collectible locality for rose quartz. - [Roşia Montană, Rosia Montana, Romania Locality Guide](https://earthwonders.com/guides/roia-montan-rosia-montana_romania_217384): Roşia Montană, Romania — classic European gold locality known for Au-Ag epithermal veins, native gold and electrum specimens, and historic mining landscapes. - [Roșia Poieni Mine, Romania Locality Guide](https://earthwonders.com/guides/roia-poieni-mine_romania_573222): Roșia Poieni Mine, Romania - a large porphyry Cu-Au system in the Apuseni; rare vivianite prisms, enargite, and gold-bearing sulfides appeal to collectors. - [Rotherhope Fell Mine, UK Locality Guide](https://earthwonders.com/guides/rotherhope-fell-mine_uk_217725): Rotherhope Fell Mine, UK - a notable North Pennines fluorite locality yielding elegant purple cubes on quartz with galena and calcite, prized by collectors. - [Roughton Gill Mine, UK Locality Guide](https://earthwonders.com/guides/roughton-gill-mine_uk_217916): Roughton Gill Mine, UK — locality famed for pyromorphite crystals and blue plumbogummite; world-class specimens from its oxidized zone attract collectors. - [Roughton Gill, UK Locality Guide](https://earthwonders.com/guides/roughton-gill_uk_564758): Roughton Gill, UK - Caldbeck Fells locality famed for a rich supergene system producing pyromorphite, plumbogummite and blue hemimorphite, highly prized by col… - [Round Mountain Mine, USA Locality Guide](https://earthwonders.com/guides/round-mountain-mine_usa_217989): Round Mountain Mine, USA — Nevada’s classic modern gold locality famed for crystallized gold specimens, electrum-rich coloration, and strong collector appeal. - [Round Mountain Mine, USA Locality Guide](https://earthwonders.com/guides/round-mountain-mine_usa_217986): Round Mountain Mine, USA; a Nevada locality famed for crystallized native gold: leaves, wires, herringbone growths, spinel-law twins, and electrum-rich pieces. - [Roundu District, Pakistan Locality Guide](https://earthwonders.com/guides/roundu-district_pakistan_218018): Roundu District, Pakistan — renowned miarolitic pegmatites yielding aquamarine, tourmaline, topaz, rare phosphates and elbaite; a premier collector locality. - [Rowley Mine, USA Locality Guide](https://earthwonders.com/guides/rowley-mine_usa_218287): Rowley Mine, Arizona’s premier wulfenite locality, yields orange to honey-yellow plates with baryte and mimetite; a cabinet classic and mineralogical laborator… - [Rubaya, DR Congo Locality Guide](https://earthwonders.com/guides/rubaya_dr-congo_218615): Rubaya, DR Congo: renowned for elbaite tourmaline from rare-metal pegmatites; transparent, color-zoned crystals with glassy luster, prized by collectors. - [Rubellite from Cruzeiro Mine, Brazil](https://earthwonders.com/guides/rubellite_from_cruzeiro-mine_brazil_61348): Rubellite from Cruzeiro Mine, Brazil: raspberry to deep rose-red elbaite with lustrous prisms, notable for sustained production and strong collector appeal. - [Rubellite](https://earthwonders.com/guides/rubellite): Rubellite - red-to-deep pink tourmaline prized for saturated color, high clarity, and brilliant luster; top localities include Jonas Mine Brazil, Malkhan, Russ… - [Rubellite from Malkhan Pegmatite Field, Russia](https://earthwonders.com/guides/rubellite_from_malkhan-pegmatite-field_russia_570005): Rubellite from the Malkhan Pegmatite Field, Russia - deep wine-red to purple-red tourmaline crystals with prisms; prized for color and pocket aesthetics. - [Rubellite from Malkhan pegmatite field](https://earthwonders.com/guides/rubellite-from_malkhan-pegmatite-field_russia_570005): Rubellite from the Malkhan pegmatite, Siberia — large, gemmy, cranberry-red tourmaline crystals on white albite and smoky quartz; highly prized by collectors. - [Rubellite from Paprok, Nuristan, Afghanistan](https://earthwonders.com/guides/rubellite_from_paprok_afghanistan_192559): Paprok rubellite is one of the defining modern tourmalines of the Hindu Kush: bright pink to raspberry-red elbaite, often so clean and glassy that even cabinet-size crystals keep a gemmy glow. The loc... - [Rubellite from Jonas Mine, Brazil](https://earthwonders.com/guides/rubellite_from_jonas-mine_brazil_123656): Rubellite from Jonas Mine, Brazil, renowned for saturated cranberry-red crystals with glassy luster, bold prisms on matrix, and top-tier collector appeal. - [Rubellite from Himalaya Mine, USA](https://earthwonders.com/guides/rubellite_from_himalaya-mine_usa_110589): Rubellite from Himalaya Mine — pink to cranberry elbaite tourmaline with glassy prisms and distinct color zoning; a historic, prolific pegmatite locality prize… - [Rubtsovsk Mine, Russia Locality Guide](https://earthwonders.com/guides/rubtsovsk-mine_russia_218672): Rubtsovsk Mine, Russia — renowned locality for red cuprite octahedra on native copper with silver and iodides; modern classic for collectors of oxidized ores. - [Ruby from Luc Yen, Vietnam](https://earthwonders.com/guides/ruby_from_luc-yen-mine_vietnam_151936): Luc Yen ruby, Vietnam — marble-hosted pink-red to purplish corundum in white marble, famed for crystal form, luster, and matrix prized by collectors. - [Ruby from Mogok Valley, Myanmar](https://earthwonders.com/guides/ruby_from_mogok-valley_myanmar_571970): Mogok ruby — marble-hosted corundum famed for pigeon’s-blood red crystals, intact gems, and a legendary mining district treasured by collectors. - [Ruby from Winza, Tanzania](https://earthwonders.com/guides/ruby_from_winza_tanzania_293740): Winza ruby, Tanzania - gemmy rhombohedral corundum with vivid red hues, rare color zoning, and distinctive crystals for collectors. - [Ruby](https://earthwonders.com/guides/ruby): Ruby - red corundum known for vivid pigeon-blood color, 9 Mohs hardness, and dramatic matrix on marble or zoisite; prized for rarity and notable localities. - [Ruby from Jegdalek Ruby Deposit, Afghanistan](https://earthwonders.com/guides/ruby_from_jegdalek-ruby-deposit_afghanistan_121638): Jegdalek Ruby Deposit, Afghanistan — marble-hosted corundum yielding vivid rubies and pink sapphires; prized for blue zoning, backlit glow, and collector appea… - [Rudabánya, Hungary Locality Guide](https://earthwonders.com/guides/rudabnya_hungary_218840): A collector's guide to Rudabánya, Hungary: its geology, mining history and notable minerals, illustrated with the 46 specimens documented from this locality on EarthWonders. - [Russia Locality Guide](https://earthwonders.com/guides/russia_144): Russia - a vast locality guide highlighting Dalnegorsk calcite, Mir and Udachnaya diamonds, Kamchatka fumaroles, and rare minerals prized by collectors. - [Rutile from Graves Mountain, Georgia, USA](https://earthwonders.com/guides/rutile_from_graves-mountain_usa_99725): Graves Mountain rutile — Georgia’s renowned locality for large dark red-brown to black twin prisms with mirror luster, prized by collectors for size and form. - [Rutile](https://earthwonders.com/guides/rutile): Rutile: sharp tetragonal prisms with mirror luster, diverse twinning, and rutilated quartz; prized for sculptural form, color variety, and display value. - [Rutile from Cavradi Gorge, Tujetsch, Switzerland](https://earthwonders.com/guides/rutile_from_cavradi-gorge_switzerland_44808): Cavradi Gorge, Switzerland — Rutile on hematite with red glassy needles in Alpine fissures; celebrated for crystallographic order and Swiss collecting heritage. - [Ruyuan fluorite mine, China Locality Guide](https://earthwonders.com/guides/ruyuan-fluorite-mine_china_219626): Ruyuan fluorite mine, China — famous green, translucent fluorite on quartz with stepped cube forms; prized for color, luster, and provenance. - [Săcărâmb, Romania Locality Guide](https://earthwonders.com/guides/scrmb_romania_220019): Săcărâmb, Romania — a classic European locality famed for a telluride-rich ore suite (nagyágite, sylvanite, petzite) and historic mining, prized by collectors. - [Sacramento mine, USA Locality Guide](https://earthwonders.com/guides/sacramento-mine_usa_220087): Sacramento mine, USA - Bisbee copper-carbonate locale: azurite blades with malachite on goethite matrix; open-pit and shaft workings prized by collectors. - [Sadiola Hill, Mali Locality Guide](https://earthwonders.com/guides/sadiola-hill_mali_573274): Sadiola Hill, Mali — Kayes Region locality famed for prehnite-epidote specimens: translucent prehnite spheres with epidote prisms, prized by collectors. - [Sahatany Pegmatite Field, Madagascar Locality Guide](https://earthwonders.com/guides/sahatany-pegmatite-field_madagascar_220430): Sahatany Pegmatite Field, Madagascar — famed for tourmalines and rare-element pegmatites; zoned crystals of tourmaline, rubellite and spodumene. - [Sahatany Valley, Madagascar Locality Guide](https://earthwonders.com/guides/sahatany-valley_madagascar_564939): Sahatany Valley, Madagascar - classic pegmatite district and premier collector locality famed for color-zoned tourmaline, rare borates, and lithium minerals. - [Saint-Salvy Mine, France Locality Guide](https://earthwonders.com/guides/saint-salvy-mine_france_223295): A collector's guide to Saint-Salvy Mine, France: its geology, mining history and notable minerals, illustrated with the 35 specimens documented from this locality on EarthWonders. - [Sakavalana mine, Madagascar Locality Guide](https://earthwonders.com/guides/sakavalana-mine_madagascar_573148): Sakavalana mine, Madagascar - famed for pezzottaite-(Cs) raspberry-pink beryl-group crystals from a tiny pocket, a locality prized by collectors. - [Sakoany deposit, Madagascar Locality Guide](https://earthwonders.com/guides/sakoany-deposit_madagascar_223745): Sakoany, Madagascar — a sedimentary celestine locality renowned for ice-blue geode crystals, strong collecting appeal, and lasting rarity. - [Salinas de Otuma, Peru Locality Guide](https://earthwonders.com/guides/salinas-de-otuma_peru_223984): Salinas de Otuma, Peru — evaporite locality yielding golden to orange gypsum on halite; renowned for glassy, twinned crystals set in desert-salt matrix. - [Saline County, USA Locality Guide](https://earthwonders.com/guides/saline-county_usa_573329): Saline County, USA — famed for lemon-yellow wavellite from Crystal Baron Mine and distinctive Paron quartz, with bauxite districts prized by collectors. - [Salzburg, Austria Locality Guide](https://earthwonders.com/guides/salzburg_austria_224531): Salzburg, Austria — Alpine locality famed for Knappenwand epidote crystals; diverse minerals from emerald to scheelite, prized by collectors and museums. - [Sambava District, Madagascar Locality Guide](https://earthwonders.com/guides/sambava-district_madagascar_224599): Sambava District, Madagascar - Ambariomiambana basalt quarry yields amber calcite twins on basalt with quartz and white zeolites; a modern classic. - [Samson Mine, Germany Locality Guide](https://earthwonders.com/guides/samson-mine_germany_224788): Samson Mine, Germany - a classic European silver locality known for ruby silver and samsonite; prized for provenance, rarity, and historic specimens. - [San Andrés Mine, Spain Locality Guide](https://earthwonders.com/guides/san-andrs-mine_spain_224884): San Andrés Mine, Spain - a renowned pyromorphite locality in Sierra Morena, producing vivid green crystals and pocket specimens prized by collectors. - [San Antonio Mine, Mexico Locality Guide](https://earthwonders.com/guides/san-antonio-mine_mexico_224942): A collector's guide to San Antonio Mine, Mexico: its geology, mining history and notable minerals, illustrated with the 188 specimens documented from this locality on EarthWonders. - [San Bartolo mine, Charcas, Mexico Locality Guide](https://earthwonders.com/guides/san-bartolo-mine-charcas_mexico_573339): A collector's guide to San Bartolo mine, Charcas, Mexico: its geology, mining history and notable minerals, illustrated with the 21 specimens documented from this locality on EarthWonders. - [San Benito County, USA Locality Guide](https://earthwonders.com/guides/san-benito-county_usa_225035): San Benito County, USA - classic type locality for benitoite, with electric-blue benitoite, black neptunite, and natrolite in blueschist; prized by collectors. - [San Bernardino County, USA Locality Guide](https://earthwonders.com/guides/san-bernardino-county_usa_225041): San Bernardino County, USA — a varied locality with Searles Lake evaporites, Mountain Pass carbonatites, and Blue Bell micro-crystals that collectors seek. - [San Carlos District, Mexico Locality Guide](https://earthwonders.com/guides/san-carlos-district_mexico_225092): San Carlos District, Mexico — renowned for vanadinite on calcite from the Apex mine, with rare wulfenite; oxidized lead-zone crystals prized by collectors. - [San Carlos Mine, Mexico Locality Guide](https://earthwonders.com/guides/san-carlos-mine_mexico_225100): San Carlos Mine, Mexico - Chihuahua locality notable for caramel vanadinite, glassy calcite, and rare wulfenite, prized for distinctive oxidized minerals. - [Sanda Hills occurrences, Republic of the Congo Locality Guide](https://earthwonders.com/guides/sanda-hills-occurrences_republic-of-the-congo_225226): Sanda Hills, Republic of the Congo - a key collector locality, source of type-local plancheite and Congo dioptase, with emerald-green dioptase on quartz. - [Sandare, null Locality Guide](https://earthwonders.com/guides/sandare_null_573294): Sandaré, Mali — Mali skarn locality yielding translucent prehnite on epidote with vesuvianite and garnet; prized for high-quality specimens and label history. - [San Diego County, USA Locality Guide](https://earthwonders.com/guides/san-diego-county_usa_225391): San Diego County, USA - gem-pegmatite locality yielding pink/green elbaite tourmaline, kunzite, aquamarine, and smoky quartz, highly prized by collectors. - [San Francisco Mine, Mexico Locality Guide](https://earthwonders.com/guides/san-francisco-mine_mexico_225809): San Francisco Mine, Mexico - classic wulfenite locality in Sonora, yielding transparent yellow-orange wulfenite, mimetite, and barite; prized for gemmy crystal… - [San Genaro Mine, Peru Locality Guide](https://earthwonders.com/guides/san-genaro-mine_peru_225895): San Genaro Mine, Peru - famed for pyrargyrite and miargyrite, a historic epithermal silver deposit and key collector locality, plus rare type minerals. - [San Jose Mine, Bolivia Locality Guide](https://earthwonders.com/guides/san-jose-mine_bolivia_226160): A collector's guide to San Jose Mine, Bolivia: its geology, mining history and notable minerals, illustrated with the 230 specimens documented from this locality on EarthWonders. - [San Juan County, USA Locality Guide](https://earthwonders.com/guides/san-juan-county_usa_226222): San Juan County, USA — famed for azurite and malachite from Lisbon Valley, plus notable uranium minerals; a rare copper and uranium collecting destination. - [San Juan de Rayas Mine, Mexico Locality Guide](https://earthwonders.com/guides/san-juan-de-rayas-mine_mexico_226249): A collector's guide to San Juan de Rayas Mine, Mexico: its geology, mining history and notable minerals, illustrated with the 66 specimens documented from this locality on EarthWonders. - [San Luis Potosí, Mexico Locality Guide](https://earthwonders.com/guides/san-luis-potos_mexico_226537): San Luis Potosí, Mexico — a mineral province famed for Oligocene topaz in rhyolite cavities and Charcas’ dense calcite and rare borates; prized by collectors. - [San Manuel Mine, USA Locality Guide](https://earthwonders.com/guides/san-manuel-mine_usa_226554): A collector's guide to San Manuel Mine, USA: its geology, mining history and notable minerals, illustrated with the 49 specimens documented from this locality on EarthWonders. - [San Martin Mine, Mexico Locality Guide](https://earthwonders.com/guides/san-martin-mine_mexico_226595): San Martin Mine, Zacatecas, Mexico — skarn locality yielding native silver on bornite, stibnite with berthierite, quartz and calcite; prized by collectors. - [San Martín Mine, Mexico Locality Guide](https://earthwonders.com/guides/san-martn-mine_mexico_226602): San Martín Mine, Mexico — Zacatecas locality famed for native silver sheets and wires on iridescent bornite, with apophyllite pockets and bold skarn specimens. - [San Martín Mine, Peru Locality Guide](https://earthwonders.com/guides/san-martn-mine_peru_226601): San Martín Mine, Peru: famed for rose-pink rhodonite blades set in calcite and quartz, in a high Andean skarn belt; a modern classic for collectors. - [San Pedro Corralitos, Mexico Locality Guide](https://earthwonders.com/guides/san-pedro-corralitos_mexico_226803): San Pedro Corralitos, Mexico — famed for luminous mimetite crusts and botryoids on rusty gossan, a classic carbonate-replacement locality prized by collectors. - [San Pedro Mine, USA Locality Guide](https://earthwonders.com/guides/san-pedro-mine_usa_226831): San Pedro Mine, USA — Santa Fe County locality noted for large chalcopyrite crystals, garnet skarn, calcite and quartz; a top North American collector site. - [San Piero in Campo, Italy Locality Guide](https://earthwonders.com/guides/san-piero-in-campo_italy_226883): San Piero in Campo, Italy Elba’s classic tourmaline locality, famed for elbaite-bearing pegmatites and historic diggings, producing sought-after color varietie… - [Santa Elena de Uairén, Venezuela Locality Guide](https://earthwonders.com/guides/santa-elena-de-uairn_venezuela_573171): Santa Elena de Uairén, Venezuela - a famed placer locality for native gold crystals (leafy, skeletal) and alluvial diamonds, set in Proterozoic shield geology. - [Santa Eulalia Mining District, Mexico Locality Guide](https://earthwonders.com/guides/santa-eulalia-mining-district_mexico_227363): Santa Eulalia Mining District, Mexico — historic Ag-Pb-Zn locality prized for classic rhodochrosite, calcite, hemimorphite, creedite, fluorite and more. - [Santa Rosa district, null Locality Guide](https://earthwonders.com/guides/santa-rosa-district_null_573300): Santa Rosa district, Brazil — famed elbaite tourmaline, especially watermelon crystals and blue indicolite, from historic pegmatites prized by collectors. - [Santa Rosalia Mine, Mexico Locality Guide](https://earthwonders.com/guides/santa-rosalia-mine_mexico_227747): Santa Rosalia Mine, Mexico — famed for boleite, cumengeite, and pseudoboleite; blue halide crystals from oxidized deposits, a cornerstone for collectors. - [Santa Rosa Mine, Brazil Locality Guide](https://earthwonders.com/guides/santa-rosa-mine_brazil_573226): Santa Rosa Mine, Brazil: renowned tourmaline locality known for watermelon elbaite, bicolored crystals, and green-to-blue rims on quartz. - [São Geraldo do Baixio, Brazil Locality Guide](https://earthwonders.com/guides/so-geraldo-do-baixio_brazil_228252): São Geraldo do Baixio, Brazil: pegmatite locality in Minas Gerais yielding sculptural smoky quartz and rare cassiterite and wodginite, prized by collectors. - [São José da Safira, Brazil Locality Guide](https://earthwonders.com/guides/so-jos-da-safira_brazil_228298): São José da Safira, Brazil — renowned pegmatite district yielding elbaite, tourmaline varieties and euclase; a premier site for Brazilian gem crystals. - [Sapat Gali, Pakistan Locality Guide](https://earthwonders.com/guides/sapat-gali_pakistan_228460): A collector's guide to Sapat Gali, Pakistan: its geology, mining history and notable minerals, illustrated with the 149 specimens documented from this locality on EarthWonders. - [Sapo Mine, Brazil Locality Guide](https://earthwonders.com/guides/sapo-mine_brazil_228499): A collector's guide to Sapo Mine, Brazil: its geology, mining history and notable minerals, illustrated with the 219 specimens documented from this locality on EarthWonders. - [Sapphire](https://earthwonders.com/guides/sapphire): Sapphire - blue to fancy-colored corundum with hexagonal prisms and rare matrix specimens; prized for color saturation, historic localities, and crystal form. - [Sapphire from Luc Yen Mine, Vietnam](https://earthwonders.com/guides/sapphire_from_luc-yen-mine_vietnam_151936): Luc Yen Sapphire - pink to purple corundum from marble-hosted deposits in northern Vietnam, prized for hexagonal crystals, translucency, and gem rush. - [Sapphire from Sri Lanka](https://earthwonders.com/guides/sapphire_from_sri-lanka_167): Sapphire — Sri Lanka's classic Ceylon sapphire: luminous blue hues, high transparency, and distinctive crystal forms from gem gravels in Ratnapura and beyond. - [Sapphire from Mogok Valley, Myanmar](https://earthwonders.com/guides/sapphire_from_mogok-valley_myanmar_571970): Sapphire from Mogok Valley, Myanmar - renowned for velvety royal blue corundum, old Burmese provenance, and a metamorphic-geology heritage prized by collectors. - [Sapucaia do Norte, Brazil Locality Guide](https://earthwonders.com/guides/sapucaia-do-norte_brazil_228536): A collector's guide to Sapucaia do Norte, Brazil: its geology, mining history and notable minerals, illustrated with the 48 specimens documented from this locality on EarthWonders. - [Saranovskii Mine, Russia Locality Guide](https://earthwonders.com/guides/saranovskii-mine_russia_228578): Saranovskii Mine, Russia — classic Urals chromium locality and the type locality for uvarovite; green crystals on dark chromite, prized for sparkle and rarity. - [Sarbai Deposit, Kazakhstan Locality Guide](https://earthwonders.com/guides/sarbai-deposit_kazakhstan_228615): Sarbai Deposit, Kazakhstan - famed for golden calcite twins, orange stellerite balls, pink chabazite, and rare silver-bearing veins, a top collector locality. - [Sardinia, Italy Locality Guide](https://earthwonders.com/guides/sardinia_italy_228649): A collector's guide to Sardinia, Italy: its geology, mining history and notable minerals, illustrated with the 47 specimens documented from this locality on EarthWonders. - [Sar-e-Sang, Afghanistan Locality Guide](https://earthwonders.com/guides/sar-e-sang_afghanistan_567734): Sar-e-Sang, Afghanistan — renowned lapis lazuli locality in the Hindu Kush, prized for ultramarine lazurite crystals and rare blue feldspathoid assemblages for… - [Saurüssel, Austria Locality Guide](https://earthwonders.com/guides/saurssel_austria_229196): Saurüssel, Austria — Alpine amethyst locality in the Zillertal Alps, famed for scepters and skeletal terminations in architectural quartz, prized by collectors. - [Sawtooth Mountains, USA Locality Guide](https://earthwonders.com/guides/sawtooth-mountains_usa_28660): Sawtooth Mountains, USA — renowned for blue aquamarine from pink Eocene granite pockets, plus smoky quartz and rare minerals, a top locality for collectors. - [Saxony, Germany Locality Guide](https://earthwonders.com/guides/saxony_germany_229513): A collector's guide to Saxony, Germany: its geology, mining history and notable minerals, illustrated with the 31 specimens documented from this locality on EarthWonders. - [Scapolite from Mogok Valley, Myanmar](https://earthwonders.com/guides/scapolite_from_mogok-valley_myanmar_571970): Scapolite from Mogok Valley, Myanmar, glassy colorless to pale yellow crystals with lavender and pink hues; valued as gem material and locality specimens. - [Scapolite from Badakhshan, Afghanistan](https://earthwonders.com/guides/scapolite_from_badakhshan_afghanistan_14867): Scapolite from Badakhshan, Afghanistan: lilac to violet prismatic crystals from Kokcha Valley–Sar-e-Sang, notable for fluorescence and tenebrescence, highly pr… - [Scapolite](https://earthwonders.com/guides/scapolite): Scapolite: tetragonal crystals in a broad color range (purple, yellow, pink, gray); notable for color varieties, UV fluorescence, and Grenville localities. - [Scheelite from Huanggang Mine, Inner Mongolia, China](https://earthwonders.com/guides/scheelite_from_huanggang-mine_china_114410): Scheelite from Huanggang Mine, Inner Mongolia: pale, sculptural tetragonal crystals with magnetite and arsenopyrite, UV fluorescence and molybdenite inclusions. - [Scheelite from Mount Xuebaoding, China](https://earthwonders.com/guides/scheelite_from_mount-xuebaoding_china_172902): Mount Xuebaoding scheelite, China — renowned for large, euhedral yellow-orange crystals against silver muscovite, a flagship locality prized by collectors. - [Scheelite](https://earthwonders.com/guides/scheelite): Scheelite (CaWO4) – a fluorescent mineral with sky-blue to icy color, sharp tetragonal crystals on diverse matrices, and vivid UV glow in top localities. - [Schlema-Hartenstein mining district, Germany Locality Guide](https://earthwonders.com/guides/schlema-hartenstein-mining-district_germany_230058): A collector's guide to Schlema-Hartenstein mining district, Germany: its geology, mining history and notable minerals, illustrated with the 48 specimens documented from this locality on EarthWonders. - [Schneckenstein Cliff, Germany Locality Guide](https://earthwonders.com/guides/schneckenstein-cliff_germany_230176): A collector's guide to Schneckenstein Cliff, Germany: its geology, mining history and notable minerals, illustrated with the 27 specimens documented from this locality on EarthWonders. - [Schneeberg, Germany Locality Guide](https://earthwonders.com/guides/schneeberg_germany_230179): A collector's guide to Schneeberg, Germany: its geology, mining history and notable minerals, illustrated with the 199 specimens documented from this locality on EarthWonders. - [Schorl from Erongo Mountains, Namibia](https://earthwonders.com/guides/schorl_from_erongo-mountains_namibia_78994): Schorl from Erongo Mountains, Namibia - glossy, architectural black tourmaline with sharp trigonal prisms; a top collector locality for striking specimens. - [Schorl from Pala Mining District, California, USA](https://earthwonders.com/guides/schorl_from_pala-mining-district_usa_191689): Schorl from the Pala Mining District, California — jet-black, striated tourmaline prisms in pegmatite pockets; prized for contrast, form, and locality history. - [Schorl](https://earthwonders.com/guides/schorl): Schorl - iron-rich black tourmaline with glassy luster and sharp terminations; prized for museum-grade specimens and top localities like Erongo and Stak Nala. - [Schorl from Stak Nala, Pakistan](https://earthwonders.com/guides/schorl_from_stak-nala_pakistan_244585): Schorl from Stak Nala, Pakistan — dark tourmaline with prisms grading into green, blue, or pink elbaite; prized for sharp terminations and vivid color zoning. - [Schwaz - Brixlegg mining district, Austria Locality Guide](https://earthwonders.com/guides/schwaz-brixlegg-mining-district_austria_230591): A collector's guide to Schwaz - Brixlegg mining district, Austria: its geology, mining history and notable minerals, illustrated with the 40 specimens documented from this locality on EarthWonders. - [Scolecite](https://earthwonders.com/guides/scolecite): Scolecite: a calcium zeolite famed for acicular sprays and starburst clusters, pinkish hues; formed in volcanic basalts, prized by zeolite collectors. - [Scolecite from Jalgaon District, India](https://earthwonders.com/guides/scolecite_from_jalgaon-district_india_120652): Scolecite from Jalgaon District, India: glassy colorless-to-white acicular crystals forming radiating sprays in basalt vesicles, prized for locality beauty. - [Scorodite from Ojuela Mine, Mexico](https://earthwonders.com/guides/scorodite_from_ojuela-mine_mexico_186119): Scorodite: blue to blue-green crystals from the Ojuela Mine, notable for sharp forms in goethite/limonite gossan, a rare arsenate prized by collectors. - [Scorodite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/scorodite_from_tsumeb_namibia_261664): Scorodite - blue to violet crystals from Tsumeb Mine, famed for alexandrite-like color shifts, blade-like habits, and rarity in the mine's oxidation zones. - [Scorodite](https://earthwonders.com/guides/scorodite): Scorodite: blue-green arsenate crystals with luster; prized for color, gemmy clarity, and prisms/rosettes on gossan; brittle, handle with care. - [Scotland, UK Locality Guide](https://earthwonders.com/guides/scotland_uk_230754): Scotland, UK — classic zeolite localities yielding analcime, stilbite, prehnite and more; prized for historic labels, type localities, and collecting pedigree. - [Seabra, Brazil Locality Guide](https://earthwonders.com/guides/seabra_brazil_573309): Seabra, Brazil: blue azurite rosettes with malachite replacements from Chapada Diamantina, offering oxidized copper specimens for collectors. - [Searles Lake, USA Locality Guide](https://earthwonders.com/guides/searles-lake_usa_231031): Searles Lake, USA — a dramatic Mojave evaporite locality famed for rose-pink halite, hanksite, borax and trona crystals, prized by collectors and researchers. - [Selenite](https://earthwonders.com/guides/selenite): Selenite — transparent gypsum with water-clear blades and fishtail twins; Naica and Oklahoma localities; prized for beauty, affordability, and delicacy. - [Seneca Mine, USA Locality Guide](https://earthwonders.com/guides/seneca-mine_usa_566196): Seneca Mine, USA, a Keweenaw copper locality near Mohawk, Michigan, notable for native copper, amygdaloidal copper, and minerals prized by collectors. - [Sepon Mine, Laos Locality Guide](https://earthwonders.com/guides/sepon-mine_laos_232432): Sepon Mine, Laos — a modern copper-gold locality notable for vivid azurite, malachite, cuprite, and native copper from the Khanong oxidized zone. - [Septemvri Mine, Bulgaria Locality Guide](https://earthwonders.com/guides/septemvri-mine_bulgaria_232448): Septemvri Mine, Bulgaria — classic Madan locality famed for sharp galena and sphalerite crystals, quartz and calcite, with rare manganilvaite. - [Serandite](https://earthwonders.com/guides/serandite): Serandite - manganese-rich pectolite analogue with pink crystals, glassy luster, varied habits, and localities such as Mont Saint-Hilaire and Wessels. - [Serandite from Poudrette Quarry, Mont Saint-Hilaire, Canada](https://earthwonders.com/guides/serandite_from_poudrette-quarry_canada_202934): Serandite from Poudrette Quarry, Mont Saint-Hilaire, Canada — iconic salmon-pink crystals, sculptural forms, and locality-first appeal prized by collectors. - [Serandite from Mont Saint-Hilaire, Canada](https://earthwonders.com/guides/serandite_from_mont-saint-hilaire_canada_169814): Mont Saint-Hilaire serandite: salmon-pink to orange crystals with glassy luster, iconic open-space growth; a signature Canadian locality prized by collectors. - [Serpieri Mine, Greece Locality Guide](https://earthwonders.com/guides/serpieri-mine_greece_232673): Serpieri Mine, Greece - Lavrion’s Kamariza area famed for vivid blue secondary sulfates (serpierite, glaucocerinite, ktenasite) whose tiny crystals attract col… - [Serra do Caldeirão claims, Brazil Locality Guide](https://earthwonders.com/guides/serra-do-caldeiro-claims_brazil_573144): Serra do Caldeirão, Brazil — notable gold locality producing crystallized native gold with vivid luster and sculptural forms, prized as a brief, iconic collect… - [Settlingstones Mine, UK Locality Guide](https://earthwonders.com/guides/settlingstones-mine_uk_232978): Settlingstones Mine, UK - renowned for witherite crusts and baryte crystals, twinned pseudohexagonal forms, a historic British locality prized by collectors. - [Shangbao Mine, China Locality Guide](https://earthwonders.com/guides/shangbao-mine_china_233678): A collector's guide to Shangbao Mine, China: its geology, mining history and notable minerals, illustrated with the 493 specimens documented from this locality on EarthWonders. - [Shangulowé Mine, DR Congo Locality Guide](https://earthwonders.com/guides/shangulow-mine_dr-congo_233725): Shangulowé Mine, DR Congo — a distinctive collector locality with baryte on malachite and plancheite, prized for texture, color contrast, and associations. - [Shattuckite from Shattuck Mine, Bisbee, Arizona, USA](https://earthwonders.com/guides/shattuckite_from_shattuck-mine_usa_233932): Shattuckite from the Shattuck Mine, Bisbee, Arizona — pale blue, porous copper silicate replacing malachite; prized for locality identity and historic labels. - [Shattuckite](https://earthwonders.com/guides/shattuckite): Shattuckite — vibrant blue copper silicate with silky fibrous sprays and rare pseudomorphs; prized for dramatic color, texture, and Bisbee–Kaokoveld localities. - [Shengus, Pakistan Locality Guide](https://earthwonders.com/guides/shengus_pakistan_234336): A collector's guide to Shengus, Pakistan: its geology, mining history and notable minerals, illustrated with the 375 specimens documented from this locality on EarthWonders. - [Sherlova Gora, Russia Locality Guide](https://earthwonders.com/guides/sherlova-gora_russia_234445): Sherlova Gora, Russia — historic greisen locality yielding topaz and smoky quartz, blue-green beryl, fluorite; dual gem-ore heritage and zavaritskite locality. - [Sherman Mine, USA Locality Guide](https://earthwonders.com/guides/sherman-mine_usa_234464): A collector's guide to Sherman Mine, USA: its geology, mining history and notable minerals, illustrated with the 51 specimens documented from this locality on EarthWonders. - [Sheshodonnell East Mine, Ireland Locality Guide](https://earthwonders.com/guides/sheshodonnell-east-mine_ireland_234518): Sheshodonnell East Mine, Ireland — famed for lemon-yellow smithsonite on purple fluorite in the Burren, a classic small locality prized by collectors. - [Shigar District, Pakistan Locality Guide](https://earthwonders.com/guides/shigar-district_pakistan_234600): Shigar District, Pakistan — pegmatite locality yielding blue aquamarine, topaz, garnet and fluorite; prized for color, terminations, and pocket integrity. - [Shigar Valley, Pakistan Locality Guide](https://earthwonders.com/guides/shigar-valley_pakistan_573229): A collector's guide to Shigar Valley, Pakistan: its geology, mining history and notable minerals, illustrated with the 379 specimens documented from this locality on EarthWonders. - [Shigar Valley, Pakistan Locality Guide](https://earthwonders.com/guides/shigar-valley_pakistan_234601): Shigar Valley, Pakistan — premier pegmatite locality yielding blue aquamarine and pocket-quality minerals; prized for provenance and collectible diversity. - [Shijiangshan Mine, China Locality Guide](https://earthwonders.com/guides/shijiangshan-mine_china_234621): A collector's guide to Shijiangshan Mine, China: its geology, mining history and notable minerals, illustrated with the 55 specimens documented from this locality on EarthWonders. - [Shilu mine, China Locality Guide](https://earthwonders.com/guides/shilu-mine_china_573125): Shilu mine, Guangdong, China — a locality for secondary copper carbonates; azurite rosettes and malachite from oxidized skarn ore prized by collectors. - [Shimen Mine, China Locality Guide](https://earthwonders.com/guides/shimen-mine_china_234703): A collector's guide to Shimen Mine, China: its geology, mining history and notable minerals, illustrated with the 106 specimens documented from this locality on EarthWonders. - [Shinkolobwe Mine, DR Congo Locality Guide](https://earthwonders.com/guides/shinkolobwe-mine_dr-congo_234803): Shinkolobwe Mine, DR Congo: renowned uranium locality with a rich uranyl-oxide suite and historic Manhattan Project ties, prized by collectors for rarity. - [Shuikoushan Mine, China Locality Guide](https://earthwonders.com/guides/shuikoushan-mine_china_235365): Shuikoushan Mine, China — southern Hunan locality renowned for brilliant sphalerite crystals in honey-yellow to ruby-red on quartz, with calcite and galena; pr… - [Shullsburg area, USA Locality Guide](https://earthwonders.com/guides/shullsburg-area_usa_235403): Shullsburg area, Wisconsin — classic Upper Mississippi zinc-lead locality, famed for lustrous calcite crystals, often with sphalerite and galena; prized. - [Siberia, Russia Locality Guide](https://earthwonders.com/guides/siberia_russia_235551): Siberia, Russia: a vast mineral locality renowned for diamond-bearing kimberlites, rare wiluite and green grossular, and its historic role in mineralogy. - [Sichuan, China Locality Guide](https://earthwonders.com/guides/sichuan_china_235591): Sichuan, China — a premier mineral locality with orange scheelite, Meigu epidote-quartz, and quartz-barite; sought for cabinet-size specimens and diverse local… - [Sicily, Italy Locality Guide](https://earthwonders.com/guides/sicily_italy_235594): Sicily, Italy — renowned sulfur locality with sharp, lemon-yellow native sulfur on aragonite, calcite, or gypsum; famed old zolfare and collectible cavities. - [Siderite from Neudorf, Germany](https://earthwonders.com/guides/siderite_from_neudorf_germany_178018): Neudorf siderite — classic Harz example with lustrous translucent rhombs in brown tones, often on quartz; valued for the Neudorf habit and ore associations. - [Siderite](https://earthwonders.com/guides/siderite): Siderite — warm-toned iron carbonate with sharp rhombohedra and occasional gemmy crystals; prized for luster, classic localities Harz, Panasqueira, Dal’negorsk. - [Siderite from Dal’negorsk, Russia](https://earthwonders.com/guides/siderite_from_dalnegorsk_russia_63378): Dal’negorsk, Russia — siderite from the Nikolaevskiy Mine, famed for warm-brown spheres and pseudomorphs after calcite or aragonite, set in a renowned skarn di… - [Siderite from Herja Mine, Romania](https://earthwonders.com/guides/siderite_from_herja-mine_romania_108882): Herja Mine, Romania — renowned for siderite in late carbonate growth, sulfosalt-rich vugs, and striking black calcite spheres, a top locality for collectors. - [Siderite from Panasqueira Mines, Portugal](https://earthwonders.com/guides/siderite_from_panasqueira-mines_portugal_192203): Siderite from Panasqueira, Portugal — lustrous tan to cream rhombohedra in rosettes and masses; a world-class, modern classic from a magmatic-hydrothermal vein. - [Sidi Ayed, Morocco Locality Guide](https://earthwonders.com/guides/sidi-ayed_morocco_235651): A collector's guide to Sidi Ayed, Morocco: its geology, mining history and notable minerals, illustrated with the 116 specimens documented from this locality on EarthWonders. - [Siegerland, Germany Locality Guide](https://earthwonders.com/guides/siegerland_germany_235735): Siegerland, Germany: historic ore district known for classic siderite veins with galena, sphalerite, and chalcopyrite; prized specimens and mining heritage. - [Sierra County, USA Locality Guide](https://earthwonders.com/guides/sierra-county_usa_235799): Sierra County, USA - diverse mineralizing systems yield rare collector specimens from Hillsboro and Lake Valley, including ramsdellite, fluorite, and wulfenite. - [Sierra de Cruces, Mexico Locality Guide](https://earthwonders.com/guides/sierra-de-cruces_mexico_235825): Sierra de Cruces, Mexico locality guide - famed for raspberry-red grossular (rosolite) and vesuvianite in skarn, with distinctive zoning and collector appeal. - [Sierra Mojada, Mexico Locality Guide](https://earthwonders.com/guides/sierra-mojada_mexico_235930): Sierra Mojada, Mexico - Coahuila ore district, famed for silver-lead-zinc ores and Sierra de Cruces grossular-vesuvianite, prized for color, form, and provenan… - [Siete Suyos mine, Bolivia Locality Guide](https://earthwonders.com/guides/siete-suyos-mine_bolivia_235993): Siete Suyos mine, Bolivia - historic tin-belt locality known for gemmy greenish-brown siderite on pyrite and rich polymetallic textures prized by collectors. - [Siglo Veinte Mine, Bolivia Locality Guide](https://earthwonders.com/guides/siglo-veinte-mine_bolivia_236034): Siglo Veinte Mine, Bolivia — a famed locality uniting tin ore bodies, historic camp status, and delicate hydrated phosphates prized by collectors. - [Silius, Italy Locality Guide](https://earthwonders.com/guides/silius_italy_236320): Silius, Italy – a premier Sardinian vein locality known for banded fluorite-barite-galena veins, sharp fluorite cubes, baryte, calcite, and rare REE minerals. - [Sils, Spain Locality Guide](https://earthwonders.com/guides/sils_spain_236380): Sils, Spain — Catalan locality famed for smoky quartz and amethyst from Massabè pegmatites; architectural quartz with microcline matrix prized by collectors. - [Silver from Freiberg Mining District, Germany](https://earthwonders.com/guides/silver_from_freiberg-mining-district_germany_87627): Freiberg Mining District, Germany — native silver with arborescent, wiry forms in calcite or sulfide matrices; prized for provenance and historic mines. - [Silver from Keweenaw Peninsula, Michigan, USA](https://earthwonders.com/guides/silver_from_keweenaw-peninsula_usa_128808): Silver from Keweenaw Peninsula, Michigan — native Ag with arborescent and herringbone forms, brilliant sheen, and copper-rich locality appeal for collectors. - [Silver from Kongsberg Silver Mining District, Norway](https://earthwonders.com/guides/silver_from_kongsberg-silver-mining-district_norway_132318): Kongsberg silver, Norway — sculptural native silver with wire/feather forms from hydrothermal veins; a historic locality prized by collectors for old pieces an… - [Silver from Batopilas, Chihuahua, Mexico](https://earthwonders.com/guides/silver_from_batopilas_mexico_18886): Batopilas, Chihuahua, Mexico — iconic native-silver district famed for wires, herringbone dendrites, and stark calcite, a sought locality for collectors. - [Silver](https://earthwonders.com/guides/silver): Silver — native silver with wire, leaf, and dendritic forms, bright luster and patina; prized for rare isometric crystals and iconic localities in collections. - [Silverband Mine, UK Locality Guide](https://earthwonders.com/guides/silverband-mine_uk_236426): Silverband Mine, UK - premier English baryte locality on Great Dun Fell, producing glassy, honey-yellow baryte crystals; famed for architectural blades. - [Silver Bell Mine, USA Locality Guide](https://earthwonders.com/guides/silver-bell-mine_usa_236483): Silver Bell Mine, USA — notable Arizona oxide locality known for rosasite, wulfenite, smithsonite, azurite and malachite; prized pockety specimens. - [Silver City, USA Locality Guide](https://earthwonders.com/guides/silver-city_usa_236579): Silver City, USA - a classic Grant County locality yielding copper carbonates and native copper, cuprite, azurite, malachite, magnetite, prized by collectors. - [Silver King mine, USA Locality Guide](https://earthwonders.com/guides/silver-king-mine_usa_236919): Silver King mine, USA — a classic native-silver locality near Superior, AZ, producing curled filiform and dense silver in dark ore with acanthite, stromeyerite… - [Silver Plume, USA Locality Guide](https://earthwonders.com/guides/silver-plume_usa_574926): Silver Plume, Colorado — classic silver-lead-zinc district famed for galena, sphalerite, and ruby-silver minerals; prized ore-mineral specimens with proven pro… - [Silverton, USA Locality Guide](https://earthwonders.com/guides/silverton_usa_237473): A collector's guide to Silverton, USA: its geology, mining history and notable minerals, illustrated with the 141 specimens documented from this locality on EarthWonders. - [Simplon Railway Tunnel, Switzerland Locality Guide](https://earthwonders.com/guides/simplon-railway-tunnel_switzerland_237672): Simplon Railway Tunnel, Switzerland - Alpine locality famed for pale lilac anhydrite crystals on dolomite, a rare closed occurrence prized by collectors. - [Sinerechenskoe Skarn Occurrence, Russia Locality Guide](https://earthwonders.com/guides/sinerechenskoe-skarn-occurrence_russia_237778): Sinerechenskoe Skarn Occurrence, Russia - a renowned locality for lustrous andradite garnet and green quartz-prase in a garnet skarn, prized by collectors. - [Skardu District, Pakistan Locality Guide](https://earthwonders.com/guides/skardu-district_pakistan_238458): A collector's guide to Skardu District, Pakistan: its geology, mining history and notable minerals, illustrated with the 593 specimens documented from this locality on EarthWonders. - [Skookumchuck Dam, USA Locality Guide](https://earthwonders.com/guides/skookumchuck-dam_usa_238684): Skookumchuck Dam, USA — a fleeting Pacific Northwest zeolite locality yielding stilbite, mesolite needles, analcime, and thomsonite, prized by collectors. - [Skutterudite from Bou Azzer Mining District, Morocco](https://earthwonders.com/guides/skutterudite_from_bou-azzer-mining-district_morocco_31847): Bou Azzer skutterudite from Morocco’s cobalt district — metallic crystals in cubic, octahedral, and dodecahedral forms with mirror luster, prized by collectors. - [Skutterudite](https://earthwonders.com/guides/skutterudite): Bou Azzer, Morocco — premier locality for skutterudite crystals: mirror-bright cubic forms, dramatic luster, vivid erythrite contrast, prized by collectors. - [Smallcleugh Mine, UK Locality Guide](https://earthwonders.com/guides/smallcleugh-mine_uk_239390): Smallcleugh Mine, UK - a classic Nenthead locality famed for galena, sphalerite, and calcite-rich flats; distinctive, vuggy ore bodies prized by collectors. - [Smithsonite from Santa Eulalia Mining District, Mexico](https://earthwonders.com/guides/smithsonite_from_santa-eulalia-mining-district_mexico_227363): Smithsonite - Santa Eulalia, Mexico: mint-green to blue-green botryoidal and rice-grain forms; renowned CRD district material tied to the San Antonio Mine. - [Smithsonite from Ojuela Mine, Mexico](https://earthwonders.com/guides/smithsonite_from_ojuela-mine_mexico_186119): Smithsonite from Ojuela Mine, Mexico: silvery botryoidal forms on limonite, olive-green crusts, rare blue botryoids; prized, scarce specimen from locality. - [Smithsonite](https://earthwonders.com/guides/smithsonite): Smithsonite: ZnCO3 with botryoidal and crystalline forms, silky to vitreous luster, pastel hues from cobalt to yellow; localities boost collecting appeal. - [Smithsonite from Kelly Mine, New Mexico, USA](https://earthwonders.com/guides/smithsonite_from_kelly-mine_usa_127969): Smithsonite from Kelly Mine, New Mexico, USA: vivid blue-green botryoidal forms, a defining American classic prized for color, luster, and locality. - [Smithsonite from 79 Mine, Arizona, USA](https://earthwonders.com/guides/smithsonite_from_79-mine_usa_426): Smithsonite from 79 Mine, Arizona — apple to green botryoidal and crusted specimens prized for color, texture, and oxidized-zone locality in Gila County. - [Smithsonite from Tsumeb, Namibia](https://earthwonders.com/guides/smithsonite_from_tsumeb_namibia_261664): Smithsonite from Tsumeb, Namibia — varied rhombohedral and botryoidal forms, pink to green colors, and mineral associations; a prized locality for collectors. - [Smithsonite from Lavrion Mining District, Greece](https://earthwonders.com/guides/smithsonite_from_lavrion-mining-district_greece_140973): Smithsonite from Lavrion Mining District, Greece — pastel blue to sea-green botryoidal forms with a wet, silky glow; historic provenance and collecting appeal. - [Smoky Hawk claim, USA Locality Guide](https://earthwonders.com/guides/smoky-hawk-claim_usa_239789): A collector's guide to Smoky Hawk claim, USA: its geology, mining history and notable minerals, illustrated with the 200 specimens documented from this locality on EarthWonders. - [Smoky Quartz from Crystal Peak, Colorado, USA](https://earthwonders.com/guides/smoky-quartz_from_crystal-peak_usa_61521): Crystal Peak smoky quartz – dark, sharply terminated crystals with satin luster, often paired with amazonite; a Colorado classic from the Pikes Peak batholith. - [Smoky Quartz from Hallelujah Junction, USA](https://earthwonders.com/guides/smoky-quartz_from_hallelujah-junction_usa_196454): Smoky Quartz - Hallelujah Junction, USA: dramatic scepter crystals, sharp terminations, internal zoning, multi-stage growth from Petersen Mountain. - [Smoky Quartz from Val Giuv, Switzerland](https://earthwonders.com/guides/smoky-quartz_from_val-giuv_switzerland_280060): Val Giuv, Switzerland - Smoky Quartz from a premier Alpine locality famed for glassy, deep smoky color and iconic twisted gwindel crystals prized by collectors. - [Smoky Quartz from Goboboseb Mountains, Namibia](https://earthwonders.com/guides/smoky-quartz_from_goboboseb-mountains_namibia_94627): Goboboseb Mountains, Namibia — smoky quartz with glassy luster, zoning, amethyst phantoms, and floater crystals from basalt cavities; prized by collectors. - [Snoqualmie Mining District, USA Locality Guide](https://earthwonders.com/guides/snoqualmie-mining-district_usa_240108): Snoqualmie Mining District, USA — renowned for quartz-pyrite specimens on alpine-breccia textures, amethyst scepters, and Japan-law twins, prized by collectors. - [Sobral da Adiça, Portugal Locality Guide](https://earthwonders.com/guides/sobral-da-adia_portugal_240460): A collector's guide to Sobral da Adiça, Portugal: its geology, mining history and notable minerals, illustrated with the 64 specimens documented from this locality on EarthWonders. - [Socorro County, USA Locality Guide](https://earthwonders.com/guides/socorro-county_usa_240524): A collector's guide to Socorro County, USA: its geology, mining history and notable minerals, illustrated with the 27 specimens documented from this locality on EarthWonders. - [Sokolovskoe Iron Mine, Kazakhstan Locality Guide](https://earthwonders.com/guides/sokolovskoe-iron-mine_kazakhstan_240738): A collector's guide to Sokolovskoe Iron Mine, Kazakhstan: its geology, mining history and notable minerals, illustrated with the 20 specimens documented from this locality on EarthWonders. - [Somma-Vesuvius Complex, Italy Locality Guide](https://earthwonders.com/guides/somma-vesuvius-complex_italy_241152): Somma-Vesuvius Complex, Italy - a historic locality yielding vesuvianite, leucite, and diverse skarn/marble assemblages; famed type-locality value and classic… - [Sonora, Mexico Locality Guide](https://earthwonders.com/guides/sonora_mexico_241378): Sonora, Mexico: a premier locality with Milpillas azurite and malachite, and Moctezuma tellurites; prized for color, rarity, and locality diversity. - [Sosedka pegmatite vein, Russia Locality Guide](https://earthwonders.com/guides/sosedka-pegmatite-vein_russia_241657): Sosedka, Russia — premier Malkhan pegmatite locality; wine-red to purplish tourmaline on albite, famed miarolitic pockets, and rare boron-rich minerals for col… - [Soudan Mine, USA Locality Guide](https://earthwonders.com/guides/soudan-mine_usa_241731): Soudan Mine, USA - premier Vermilion Range locality, bluish hematite with quartz-filled vugs, historic Minnesota iron-ore site prized by collectors. - [Sounion, Greece Locality Guide](https://earthwonders.com/guides/sounion_greece_241811): Sounion, Greece — Lavrion locality famed for supergene smithsonite, aurichalcite, malachite and aragonite; notable for named workings and kapellasite’s type lo… - [Sounion mine no. 6, Lavrion, Greece Locality Guide](https://earthwonders.com/guides/sounion-mine-no-6-lavrion_greece_573115): Sounion no. 6, Lavrion, Greece — noted for vivid copper-bearing smithsonite and blue aurichalcite, with a diverse range of supergene minerals prized by collect… - [Souss-Massa Region, Morocco Locality Guide](https://earthwonders.com/guides/souss-massa-region_morocco_241876): A collector's guide to Souss-Massa Region, Morocco: its geology, mining history and notable minerals, illustrated with the 30 specimens documented from this locality on EarthWonders. - [South Africa Locality Guide](https://earthwonders.com/guides/south-africa_163): A collector's guide to South Africa: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [South Australia, Australia Locality Guide](https://earthwonders.com/guides/south-australia_australia_241940): A collector's guide to South Australia, Australia: its geology, mining history and notable minerals, illustrated with the 164 specimens documented from this locality on EarthWonders. - [South Dakota, USA Locality Guide](https://earthwonders.com/guides/south-dakota_usa_242101): South Dakota, USA — Black Hills pegmatites yield a rich paragenesis (spodumene, beryl, hureaulite) and historic mines, a must for serious collectors. - [South Fowey Consols, UK Locality Guide](https://earthwonders.com/guides/south-fowey-consols_uk_242487): A collector's guide to South Fowey Consols, UK: its geology, mining history and notable minerals, illustrated with the 34 specimens documented from this locality on EarthWonders. - [South Orebody, USA Locality Guide](https://earthwonders.com/guides/south-orebody_usa_242757): South Orebody, USA - premier Missouri locality for amber calcite, galena, chalcopyrite, and dolomite specimens; famed for paragenesis and galena study. - [South Rift Valley, Kenya Locality Guide](https://earthwonders.com/guides/south-rift-valley_kenya_242880): South Rift Valley, Kenya — premier locality for cinnamon to peach grossular garnets on blue calcite, with calc-silicate context and Lake Magadi ties. - [Southwest Mine, USA Locality Guide](https://earthwonders.com/guides/southwest-mine_usa_243093): A collector's guide to Southwest Mine, USA: its geology, mining history and notable minerals, illustrated with the 61 specimens documented from this locality on EarthWonders. - [South Wollo Zone, Ethiopia Locality Guide](https://earthwonders.com/guides/south-wollo-zone_ethiopia_243148): South Wollo Zone, Ethiopia opal — hydrophane precious opal from weathered rhyolitic ignimbrite, vivid play-of-color and notable production shaping the market. - [Špania Dolina, Slovakia Locality Guide](https://earthwonders.com/guides/pania-dolina_slovakia_243277): Špania Dolina, Slovakia — historic copper-silver locality famed for devilline rosettes and azurite/malachite in oxidation zones, a European copper source. - [Spessartine from Tongbei, China](https://earthwonders.com/guides/spessartine_from_tongbei_china_258391): Tongbei spessartine, China — orange to red-orange garnet crystals with smoky quartz and microcline; gemmy luster, elegant pockets, collector appeal. - [Spessartine](https://earthwonders.com/guides/spessartine): Spessartine (Mn3Al2Si3O12) is the vivid orange garnet prized for gemmy, sharp crystals and brilliant luster; forms with smoky quartz and feldspar. - [Spessartine from Shigar District, Pakistan](https://earthwonders.com/guides/spessartine_from_shigar-district_pakistan_234600): Spessartine from Shigar District, Pakistan — deep red, manganese-rich garnets with almandine-spessartine chemistry, prized for color and locality. - [Spessartine from Little Three Mine, USA](https://earthwonders.com/guides/spessartine_from_little-three-mine_usa_147408): Spessartine from Little Three Mine, USA — gem-quality orange garnet on cleavelandite with tourmaline; prized for locality signature and Ramona pegmatite pocket… - [Spessartine from Wushan Spessartine Mine, China](https://earthwonders.com/guides/spessartine_from_wushan-spessartine-mine_china_295209): Wushan Spessartine Mine, Tongbei Yunxiao, Fujian - famed for saturated orange spessartine with smoky quartz, a landmark locality prized by collectors. - [Sphalerite from Naica Mine, Mexico](https://earthwonders.com/guides/sphalerite_from_naica_mexico_175533): Naica Mine, Chihuahua, Mexico - famed for black, lustrous sphalerite crystals (often twinned) with galena, pyrite, and fluorite, a key locality for collectors. - [Sphalerite from Huanggang Mine, Inner Mongolia, China](https://earthwonders.com/guides/sphalerite_from_huanggang-mine_china_114410): Sphalerite from Huanggang Mine, Inner Mongolia: lemon-gold gem crystals with strong backlighting and a rare skarn-hydrothermal association for collectors. - [Sphalerite from Áliva Mine, Spain](https://earthwonders.com/guides/sphalerite_from_liva-mine_spain_4700): Áliva Mine sphalerite, Spain — caramel-blende with honey-yellow to cherry-red color, resinous luster, and benchmark gem-quality specimens prized by collectors. - [Sphalerite from Trepča Stari Trg Mine, Kosovo](https://earthwonders.com/guides/sphalerite_from_trepca-stari-trg-mine_kosovo_260391): Trepča Stari Trg Mine, Kosovo - black, iron-rich sphalerite with strong luster and dramatic twinning, signaling skarn-hosted specimens prized by collectors. - [Sphalerite from Madan Ore Field, Bulgaria](https://earthwonders.com/guides/sphalerite_from_madan-ore-field_bulgaria_153449): Madan Ore Field, Bulgaria: sphalerite specimens in dark resinous forms contrasting with galena and quartz, a premier European sulfide-collection locality. - [Sphalerite from Elmwood Mine, Tennessee, USA](https://earthwonders.com/guides/sphalerite_from_elmwood-mine_usa_76987): Sphalerite from Elmwood Mine, Tennessee — lustrous, dark reddish-brown crystals with ruby-fire edges; iconic Elmwood pockets with calcite, fluorite, baryte. - [Sphalerite from Huanzala Mine, Peru](https://earthwonders.com/guides/sphalerite_from_huanzala-mine_peru_114500): Sphalerite from Huanzala Mine, Peru — brass-yellow to black crystals, often with pyrite and quartz; a striking Andean sulfide specimen with paragenetic history. - [Sphalerite from Dal’negorsk, Russia](https://earthwonders.com/guides/sphalerite_from_dalnegorsk_russia_63378): Sphalerite from Dal’negorsk, Russia — black, glassy ZnS crystals from a famed district; prized for sharp twinned forms and striking contrasts with galena and c… - [Sphalerite](https://earthwonders.com/guides/sphalerite): Sphalerite — a spectrum of colors and crystal forms, resinous to adamantine luster, gemmy on matrix; prized by collectors for iconic localities and displays. - [Spinel from Mahenge, Tanzania](https://earthwonders.com/guides/spinel_from_mahenge_tanzania_154159): Spinel from Mahenge, Tanzania — neon pink-red, marble-hosted crystals with sharp octahedra and gemmy zones, prized for color, form, and locality. - [Spinel from Luc Yen Mine, Vietnam](https://earthwonders.com/guides/spinel_from_luc-yen-mine_vietnam_151936): Luc Yen spinel, Vietnam — marble-hosted red to cobalt-blue crystals; paragenesis with calcite and clinohumite, making this locality prized by collectors. - [Spinel](https://earthwonders.com/guides/spinel): Spinel, color range from ruby red to cobalt blue, sharp octahedral form, hardness 8, rare gemmy crystals on marble, prized by collectors for rarity and luster. - [Spinel from Mogok Valley, Myanmar](https://earthwonders.com/guides/spinel_from_mogok-valley_myanmar_571970): Spinel from Mogok Valley, Myanmar - glassy octahedra in pink to red hues set in marble, famed for Star of David twins, fluorescence, and top collector appeal. - [Spodumene from Pala Mining District, USA](https://earthwonders.com/guides/spodumene_from_pala-mining-district_usa_191689): Spodumene from the Pala Mining District, USA - kunzite colors from rose to lilac, strong pleochroism, sharp bladed crystals, and pocket-pegmatite allure. - [Spodumene from Paprok, Afghanistan](https://earthwonders.com/guides/spodumene_from_paprok_afghanistan_192559): Paprok, Afghanistan: renowned for gem spodumene with kunzite, triphane, and hiddenite; a lithium-rich pegmatite locality prized by collectors for refined cryst… - [Spodumene from Mawi Pegmatite, Afghanistan](https://earthwonders.com/guides/spodumene_from_mawi-pegmatite_afghanistan_159560): Spodumene from Mawi, Afghanistan: kunzite pink-to-lilac plus green, blue, yellow, and colorless crystals, valued for sharp prisms and strong pleochroism. - [Spodumene](https://earthwonders.com/guides/spodumene): Spodumene — kunzite, hiddenite, and triphane varieties; vivid colors and pleochroism, formed in granitic pegmatites, with gem and specimen appeal and fragility. - [Spruce Ridge, USA Locality Guide](https://earthwonders.com/guides/spruce-ridge_usa_244248): Spruce Ridge, USA - signature Snoqualmie locality yielding quartz with brassy to silvery pyrite, display-quality crystals in rugged pockets. - [Sri Lanka Locality Guide](https://earthwonders.com/guides/sri-lanka_167): Sri Lanka: Ratnapura’s gem gravels yield corundum sapphires (blue, fancy, padparadscha) with chrysoberyl, spinel, zircon—one of the world’s premier collector l… - [Stak Nala, Pakistan Locality Guide](https://earthwonders.com/guides/stak-nala_pakistan_244585): A collector's guide to Stak Nala, Pakistan: its geology, mining history and notable minerals, illustrated with the 396 specimens documented from this locality on EarthWonders. - [St Andreasberg, Germany Locality Guide](https://earthwonders.com/guides/st-andreasberg_germany_244762): St Andreasberg, Germany - historic Harz locality yielding ruby pyrargyrite, native silver, arsenic and calcite varieties; prized by collectors for classic Euro… - [St Andreasberg Mining District, Germany Locality Guide](https://earthwonders.com/guides/st-andreasberg-mining-district_germany_244763): St Andreasberg Mining District, Germany - renowned for rare noble calcite and rich silver minerals; type-locality minerals include samsonite and harmotome. - [Stank Mine, UK Locality Guide](https://earthwonders.com/guides/stank-mine_uk_244827): Stank Mine, UK — a Furness hematite locality prized for calcite crystals zoned by hematite, sharp scalenohedra on iron-ore matrix, sought by collectors. - [Stanley Butte, USA Locality Guide](https://earthwonders.com/guides/stanley-butte_usa_244853): A collector's guide to Stanley Butte, USA: its geology, mining history and notable minerals, illustrated with the 29 specimens documented from this locality on EarthWonders. - [Stannite](https://earthwonders.com/guides/stannite): Stannite — copper-iron-tin sulfide with dark steel-gray to black metallic crystals and iridescent tarnish; rare on matrix, from Panasqueira and Dachang. - [Stan Terg mine, Trepca Complex, null Locality Guide](https://earthwonders.com/guides/stan-terg-mine-trepca-complex_null_573340): Stan Terg mine, Trepca Complex, Kosovo - premier European sulfide locality with vivid galena-sphalerite-pyrite associations and the Trepča look. - [Starnitsa deposit, Bulgaria Locality Guide](https://earthwonders.com/guides/starnitsa-deposit_bulgaria_245220): A collector's guide to Starnitsa deposit, Bulgaria: its geology, mining history and notable minerals, illustrated with the 28 specimens documented from this locality on EarthWonders. - [Stellerite from Jalgaon District, India](https://earthwonders.com/guides/stellerite_from_jalgaon-district_india_120652): Stellerite from Jalgaon District, India: pearly, sculptural zeolite crystals with balls and pinwheels; identity-sensitive, prized by collectors for display. - [Stellerite](https://earthwonders.com/guides/stellerite): Stellerite - radiating star-like blades in white to peach; hemispheres in basalt with apophyllite and stilbite, prized by collectors for form Indian localities. - [Stephanite](https://earthwonders.com/guides/stephanite): Stephanite (Ag5SbS4) — metallic-black crystals with sharp edges and signature twinning; rare, historic specimens from famed silver camps appeal to collectors. - [Sterling Hill Mine, USA Locality Guide](https://earthwonders.com/guides/sterling-hill-mine_usa_246301): Sterling Hill Mine, USA — premier locality for serious collectors; iconic franklinite-willemite-zincite assemblages, vivid UV fluorescence, and a rich mining h… - [Sterling Mine, USA Locality Guide](https://earthwonders.com/guides/sterling-mine_usa_246308): Sterling Mine, USA — Colorado’s classic blue barite locality, with aquamarine-blue prisms on calcite, noted for beauty, rarity, and collector history. - [Steward Mine, USA Locality Guide](https://earthwonders.com/guides/steward-mine_usa_246436): Steward Mine, USA — classic Butte locality; enargite, pyrite, bornite, and copper-sulfosalts, with mine-labels and sharp terminations prized by collectors. - [Stewart Mine, USA Locality Guide](https://earthwonders.com/guides/stewart-mine_usa_246461): Stewart Mine, USA - Pala lithium-pegmatite locality famed for lilac lepidolite and gem elbaite tourmaline, plus rare phosphates and rich pocket specimens. - [St Gotthard pass road, Switzerland Locality Guide](https://earthwonders.com/guides/st-gotthard-pass-road_switzerland_246561): St Gotthard pass road, Switzerland — Alpine fissure locality yielding quartz, smoky quartz, and pink fluorite; prized for glassy octahedra and cleft specimens. - [Stibnite from Xikuangshan Sb Deposit, China](https://earthwonders.com/guides/stibnite_from_xikuangshan-sb-deposit_china_295783): Stibnite from Xikuangshan Sb Deposit, China — world’s largest antimony ore field; lustrous blade-like crystals and dramatic sprays prized by collectors. - [Stibnite from Ichinokawa Mine, Japan](https://earthwonders.com/guides/stibnite_from_ichinokawa-mine_japan_116079): Ichinokawa Mine, Japan — stibnite famed for large prismatic crystals, metallic luster, and historic Meiji-era provenance; a landmark locality for collectors. - [Stibnite from Herja Mine, Romania](https://earthwonders.com/guides/stibnite_from_herja-mine_romania_108882): Herja Mine, Romania - a classic European stibnite locality famed for radiating sprays, dark gunmetal luster, and sculptural crystals prized by collectors. - [Stibnite](https://earthwonders.com/guides/stibnite): Stibnite — dramatic sword-like crystals with steel luster; prized for striking metallic forms, historic Ichinokawa specimens, and diverse global localities. - [Stilbite from Jalgaon District, India](https://earthwonders.com/guides/stilbite_from_jalgaon-district_india_120652): Stilbite — Jalgaon, India: pearly pastel blades in bow-ties and rosettes, set against basalt; famed for architectural beauty and strong collector appeal. - [Stilbite from Prospect Park Quarry, New Jersey, USA](https://earthwonders.com/guides/stilbite_from_prospect-park-quarry_usa_204689): Prospect Park stilbite, New Jersey — tan to cream bow-tie stilbite in basalt pockets, with datolite and laumontite, a notable Paterson district locality. - [Stilbite](https://earthwonders.com/guides/stilbite): Stilbite — a zeolite famed for bow-tie crystals, pastel colors from white to peach, formed in basalt cavities; prized for form, color, and provenance. - [Stilbite from Wagholi Quarries, India](https://earthwonders.com/guides/stilbite_from_wagholi-quarries_india_286150): Stilbite from Wagholi Quarries, India — sharp blades with blue cavansite rosettes, prized for cabinet-quality contrast and a classic Deccan Traps locality. - [St Issey Wheal Phoenix, UK Locality Guide](https://earthwonders.com/guides/st-issey-wheal-phoenix_uk_246731): St Issey Wheal Phoenix, UK — historic lead-copper locality linked to Wheal Phoenix; prized copper-phosphate minerals chalcosiderite, libethenite, and cuprite. - [St Ives Consols, UK Locality Guide](https://earthwonders.com/guides/st-ives-consols_uk_246742): St Ives Consols, UK — a classic Cornish locality famed for old-mine chalcocite crystals, metallic tabular forms, and occasional native bismuth on quartz. - [St. Lawrence County, USA Locality Guide](https://earthwonders.com/guides/st-lawrence-county_usa_246862): St. Lawrence County, USA — premier locality with Balmat zinc district and Gouverneur–Fowler belt, yielding tremolite, tourmaline, diopside, and danburite. - [Stolberg, Germany Locality Guide](https://earthwonders.com/guides/stolberg_germany_247150): Stolberg, Germany — classic Harz locality for pale, glassy fluorite with siderite; Großer Auerberg phenocrysts and historic Wolfsberg sulfosalts appeal to coll… - [Stolzite from Broken Hill, Australia](https://earthwonders.com/guides/stolzite_from_broken-hill_australia_34725): Stolzite from Broken Hill, Australia: tetragonal crystals in honey to orange-yellow hues on gossan matrix; prized for locality pedigree and classic specimens. - [Stolzite from Sainte-Lucie Mine, France](https://earthwonders.com/guides/stolzite_from_sainte-lucie-mine_france_221341): Sainte-Lucie Mine, France - stolzite from this famed locality yields robust tabular crystals, dramatic luster, and canonical status for collectors. - [Stolzite](https://earthwonders.com/guides/stolzite): Stolzite (PbWO4) - rare tungsten analogue of wulfenite; lemon-yellow to honey-brown crystals, dense and brittle, prized for color and localities like Tsumeb. - [Stoneco Auglaize Quarry, USA Locality Guide](https://earthwonders.com/guides/stoneco-auglaize-quarry_usa_247226): Stoneco Auglaize Quarry, USA — Northwestern Ohio fluorite locality famed for iridescent brown-to-purple cubes, calcite pockets, and historic collector interest. - [Stoneco Lime City Quarry, USA Locality Guide](https://earthwonders.com/guides/stoneco-lime-city-quarry_usa_247228): Stoneco Lime City Quarry, USA — Silurian dolostone locality known for celestine–strontianite–calcite–fluorite pockets; blue celestine and amber fluorite cubes… - [Stoneco Maumee Quarry, USA Locality Guide](https://earthwonders.com/guides/stoneco-maumee-quarry_usa_247229): Stoneco Maumee Quarry, Ohio — Findlay Arch locality yielding celestine, calcite, and pale fluorite; prized for its localized, scarce vug specimens. - [Stoneco White Rock Quarry, USA Locality Guide](https://earthwonders.com/guides/stoneco-white-rock-quarry_usa_247239): A collector's guide to Stoneco White Rock Quarry, USA: its geology, mining history and notable minerals, illustrated with the 159 specimens documented from this locality on EarthWonders. - [Stoneham, USA Locality Guide](https://earthwonders.com/guides/stoneham_usa_247252): Stoneham, Colorado — premier barite locality with blue BaSO4 crystals in calcite; renowned Leeson pockets and gem-like specimens prized by collectors. - [Strontianite](https://earthwonders.com/guides/strontianite): Strontianite - radiating sprays and translucent prisms; a rare connoisseur carbonate with localities Strontian, Oberdorf, Elmwood and strong collecting value. - [Strontianite from Oberdorf, Austria](https://earthwonders.com/guides/strontianite_from_oberdorf_austria_184970): Strontianite from Oberdorf, Austria - lustrous, translucent to gemmy prisms, often six-sided and pseudo-hexagonal, on carbonate matrix; prized among collectors. - [Strontian, UK Locality Guide](https://earthwonders.com/guides/strontian_uk_248149): A collector's guide to Strontian, UK: its geology, mining history and notable minerals, illustrated with the 53 specimens documented from this locality on EarthWonders. - [Sudbury District, Canada Locality Guide](https://earthwonders.com/guides/sudbury-district_canada_248591): Sudbury District, Canada - premier locality famed for sperrylite, cobaltite, and millerite; rich mining history and micro-crystal riches prized by collectors. - [Sulfur from Cianciana, Sicily, Italy](https://earthwonders.com/guides/sulfur_from_cianciana_italy_51193): Cianciana sulfur — Sicily’s renowned collector locality for bright yellow native S8 crystals on aragonite, valued for color, luster, and crystal integrity. - [Sulfur from Agrigento Province, Sicily, Italy](https://earthwonders.com/guides/sulfur_from_agrigento-province_italy_2374): Sulfur from Agrigento Province, Sicily — vivid canary-yellow crystals on aragonite and gypsum, a Sicilian locality prized for color and luster. - [Sulfur from El Desierto Mine, Sierra Mojada, Coahuila, Mexico](https://earthwonders.com/guides/sulfur_from_el-desierto-mine_bolivia_75952): Sulfur from Sierra Mojada, Coahuila, Mexico — a locality-specific native sulfur with rarity potential, provenance debate, and strong collector appeal. - [Sulfur](https://earthwonders.com/guides/sulfur): Sulfur — vivid canary-yellow crystals with resinous luster; rare euhedrals, famed Sicilian mines and top localities; fragility boosts collecting value and care. - [Sulfur from Tarnobrzeg, Subcarpathian Voivodeship, Poland](https://earthwonders.com/guides/sulfur_from_tarnobrzeg_poland_572572): Sulfur from Tarnobrzeg, Poland — classic yellow crystals from the Machów Miocene deposit, prized for sharp orthorhombic crystals and associations with celestin… - [Sunnyside Mine, USA Locality Guide](https://earthwonders.com/guides/sunnyside-mine_usa_249671): Sunnyside Mine, USA – a San Juan locality famed for pastel rhodochrosite on quartz, green fluorite, and manganese minerals that define collector appeal. - [Susanna Mine, UK Locality Guide](https://earthwonders.com/guides/susanna-mine_uk_250330): A collector's guide to Susanna Mine, UK: its geology, mining history and notable minerals, illustrated with the 21 specimens documented from this locality on EarthWonders. - [Sverdlovsk Oblast, Russia Locality Guide](https://earthwonders.com/guides/sverdlovsk-oblast_russia_250647): Sverdlovsk Oblast, Russia — Urals locality yielding emeralds in schist, banded malachite, and crocoite; prized by collectors for historic mining sites and clas… - [Sweet Home Mine, USA Locality Guide](https://earthwonders.com/guides/sweet-home-mine_usa_250977): A collector's guide to Sweet Home Mine, USA: its geology, mining history and notable minerals, illustrated with the 784 specimens documented from this locality on EarthWonders. - [Sweetwater Mine, USA Locality Guide](https://earthwonders.com/guides/sweetwater-mine_usa_251020): Sweetwater Mine, Missouri: a Viburnum Trend locality famed for sculptural calcite prisms, brassy chalcopyrite, and lead-gray galena, prized by collectors. - [Switzerland Locality Guide](https://earthwonders.com/guides/switzerland_171): Switzerland: Alpine fissure localities yield clear and smoky quartz, adularia, and fluorite, prized for Alpine precision, crystal beauty, and collecting value. - [Tae Hwa Mine, South Korea Locality Guide](https://earthwonders.com/guides/tae-hwa-mine_south-korea_251712): Tae Hwa Mine, South Korea - famed for scheelite crystals in quartz within a tungsten hydrothermal system; prized for sharp form, rich color, and collector valu… - [Talèfre Glacier, France Locality Guide](https://earthwonders.com/guides/talfre-glacier_france_252232): Talèfre Glacier, France — Alpine locality yielding smoky quartz, gwindel quartz, and pink fluorite; famed for historic specimens and striking setting. - [Tantalite](https://earthwonders.com/guides/tantalite): Tantalite — high-tantalum mineral (Fe/Mn) forming stout, black prismatic crystals in granitic pegmatites; rare display crystals on matrix with associations. - [Tantalite from Shigar Valley, Pakistan](https://earthwonders.com/guides/tantalite_from_shigar-valley_pakistan_234601): Shigar Valley tantalite: glassy-to-submetallic crystals with red translucency; a rare-metal signature of northern Pakistan’s pegmatites, prized against albite. - [Tantalite from Pala Mining District, San Diego County, USA](https://earthwonders.com/guides/tantalite_from_pala-mining-district_usa_191689): Pala tantalite from the San Diego County mining district, rare and sharp with lustrous crystals on matrix, highlights provenance, rarity, and collector appeal. - [Tantara Mine, DR Congo Locality Guide](https://earthwonders.com/guides/tantara-mine_dr-congo_252823): Tantara Mine, DR Congo — compact Haut-Katanga locality yielding emerald to blue-green dioptase with plancheite and shattuckite; copper-silicate pseudomorphs al… - [Tanzania Locality Guide](https://earthwonders.com/guides/tanzania_174): Tanzania - home to Merelani Hills, the tanzanite source; diverse gem fields yield tanzanite, zoisite, rubies, sapphires, and rare minerals prized by collectors. - [Tanzanite from Merelani Hills, Tanzania](https://earthwonders.com/guides/tanzanite_from_merelani-hills_tanzania_162307): Tanzanite from Merelani Hills, blue-to-violet zoisite with strong pleochroism, glassy transparency, and prized natural crystal form for collectors. - [Tanzanite](https://earthwonders.com/guides/tanzanite): Tanzanite: vivid blue-to-violet zoisite with strong pleochroism and crystals from Merelani, Tanzania; prized by collectors, rare matrix pieces. - [Taolin Mine, China Locality Guide](https://earthwonders.com/guides/taolin-mine_china_252858): Taolin Mine, China - renowned fluorite-sulfide locality in Hunan, yielding green to purple fluorite on quartz with sphalerite and galena, prized by collectors. - [Taouz Caïdat, Morocco Locality Guide](https://earthwonders.com/guides/taouz-cadat_morocco_252871): Taouz Caïdat, Morocco: renowned vanadinite locality with red hexagonal crystals on dark oxide matrices; a classic Moroccan site prized for sculptural forms. - [Taquaral, Brazil Locality Guide](https://earthwonders.com/guides/taquaral_brazil_252949): Taquaral, Brazil: famed for rose quartz with phosphates from Lavra da Ilha pegmatite; a type locality for zanazziite and whiteite, prized by collectors. - [Tarnobrzeg, Poland Locality Guide](https://earthwonders.com/guides/tarnobrzeg_poland_572572): Tarnobrzeg, Poland — historic sulfur locality famed for cavernous limestones bearing native sulfur, celestine, barite, and calcite, prized by collectors. - [Tasmania, Australia Locality Guide](https://earthwonders.com/guides/tasmania_australia_253262): Tasmania, Australia — a premier collector locality, famed for Zeehan–Dundas crocoite on gossans with dundasite and cerussite, plus Mount Bischoff cassiterite t… - [Taxco de Alarcón, Mexico Locality Guide](https://earthwonders.com/guides/taxco-de-alarcn_mexico_253505): Taxco de Alarcón, Mexico: a classic silver district famed for rhodochrosite on quartz, ilvaite, pyrargyrite, and well-labeled, striking ore specimens. - [Tazna Mine, Bolivia Locality Guide](https://earthwonders.com/guides/tazna-mine_bolivia_253686): Tazna Mine, Bolivia - renowned locality for sharp ferberite and bismuthinite crystals, with arsenopyrite and quartz associations and a dramatic Andean setting. - [Telírio mine, null Locality Guide](https://earthwonders.com/guides/telrio-mine_null_573277): Telírio mine, Minas Gerais — premier specimen locality yielding yellow-green brazilianite on white albite, with rare phosphates; highly prized by collectors. - [Teller County, USA Locality Guide](https://earthwonders.com/guides/teller-county_usa_254091): Teller County, USA: renowned for Crystal Peak amazonite-smoky quartz pockets and Cripple Creek gold-telluride ore; prized for color, locality, and rarity. - [Tenke-Fungurume area, DR Congo Locality Guide](https://earthwonders.com/guides/tenke-fungurume-area_dr-congo_254342): A collector's guide to Tenke-Fungurume area, DR Congo: its geology, mining history and notable minerals, illustrated with the 242 specimens documented from this locality on EarthWonders. - [Tennantite from Tsumeb, Namibia](https://earthwonders.com/guides/tennantite_from_tsumeb_namibia_261664): Tennantite from Tsumeb, Namibia: steel-gray tetrahedra on dolomite or quartz, prized by collectors for rarity, contrast, and the iconic type locality. - [Tennantite](https://earthwonders.com/guides/tennantite): Tennantite - sharp tetrahedral crystals with gunmetal luster, prized by collectors for classic localities, rarity, and display-worthy specimens. - [Tentadora Mine, Peru Locality Guide](https://earthwonders.com/guides/tentadora-mine_peru_254442): Tentadora Mine, Peru — display-quality quartz, including Japan-law twins, and chrysocolla-coated quartz from Ullpacc–Pampa Blanca, prized by collectors for col… - [Teófilo Otoni, Brazil Locality Guide](https://earthwonders.com/guides/tefilo-otoni_brazil_254466): Teófilo Otoni, Brazil — renowned pegmatite locality yielding aquamarine, beryl and related gems; historic trade hub with strong collector appeal and distinctiv… - [Tepetate, Mexico Locality Guide](https://earthwonders.com/guides/tepetate_mexico_254481): Tepetate, Mexico - a classic topaz locality famed for gemmy orthorhombic crystals in rhyolite cavities, notable for collectible specimens and locality history. - [Teresita Mine, Spain Locality Guide](https://earthwonders.com/guides/teresita-mine_spain_254550): A collector's guide to Teresita Mine, Spain: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Terlingua, USA Locality Guide](https://earthwonders.com/guides/terlingua_usa_254573): A collector's guide to Terlingua, USA: its geology, mining history and notable minerals, illustrated with the 22 specimens documented from this locality on EarthWonders. - [Tetikana, Ambatofinandrahana Commune, Madagascar Locality Guide](https://earthwonders.com/guides/tetikana-ambatofinandrahana-commune_madagascar_573352): Tetikana, Madagascar - a pocket hematite locality famed for epitaxial hematite-on-rutile crystals with metallic luster, limited production, and collector appea… - [Tetrahedrite from Huanzala Mine, Peru](https://earthwonders.com/guides/tetrahedrite_from_huanzala-mine_peru_114500): Huanzala “tetrahedrite” is a locality where the collector’s label and the mineralogical reality need to be read together. In older collections, dealer stock, and specimen captions, the black, highly l... - [Tetrahedrite from Cavnic Mine, Romania](https://earthwonders.com/guides/tetrahedrite_from_cavnic-mine_romania_44801): Cavnic Mine, Romania — classic tetrahedrite from the Baia Mare district; sharp steel-gray crystals, Kapnik provenance, and large, lustrous pieces prized by col… - [Tetrahedrite](https://earthwonders.com/guides/tetrahedrite): Tetrahedrite — dark steel-gray to black, sharp tetrahedra with bright faces; forms in veins and skarns; prized for geometry, luster, and silver varieties. - [Tharsis, Spain Locality Guide](https://earthwonders.com/guides/tharsis_spain_255136): Tharsis, Spain - renowned Iberian Pyrite Belt locality yielding goethite specimens, mimetite and beudantite from oxidized deposits, prized by collectors. - [The Korshunovskoe iron deposit](https://earthwonders.com/guides/korshunovskoe-iron-deposit): Korshunovskoe iron deposit — Siberian locality 430 km north of Irkutsk, producing iron ore; notable for historic mining and collector-grade ore. - [Thomas Range, USA Locality Guide](https://earthwonders.com/guides/thomas-range_usa_573247): Thomas Range, USA — premier locality yielding topaz, bixbyite, red beryl from lithophysal cavities in rhyolite; crisp, glassy crystals prized by collectors. - [Thomsonite](https://earthwonders.com/guides/thomsonite): Thomsonite: a calcium-dominant zeolite known for radiant spherical aggregates, acicular needles, and peach to pink colors; favored by zeolite collectors. - [Thunder Bay District, Canada Locality Guide](https://earthwonders.com/guides/thunder-bay-district_canada_256363): A collector's guide to Thunder Bay District, Canada: its geology, mining history and notable minerals, illustrated with the 66 specimens documented from this locality on EarthWonders. - [Thuong Xuan, Vietnam Locality Guide](https://earthwonders.com/guides/thuong-xuan_vietnam_573283): Thuong Xuan, Vietnam — notable aquamarine locality with sharp blue beryl crystals from pegmatites; collectible specimens, vivid color, and solid background. - [Ticino, Switzerland Locality Guide](https://earthwonders.com/guides/ticino_switzerland_256604): Ticino, Switzerland - Alpine cleft minerals, metamorphic classics, and rare ore minerals; famed Tessin quartz and the Campolungo Tremolite type locality. - [Tilly Foster Iron Mine, USA Locality Guide](https://earthwonders.com/guides/tilly-foster-iron-mine_usa_256962): Tilly Foster Iron Mine, USA — New York locality famed for magnetite–chondrodite assemblages, unusually large chondrodite crystals, and notable pseudomorphs. - [Tin](https://earthwonders.com/guides/tin): Native Tin: rare connoisseur’s mineral valued for bright metallic luster and tiny habit; Erzgebirge, Bohemia, and Yunnan localities boost collecting appeal and… - [Tincroft Mine, UK Locality Guide](https://earthwonders.com/guides/tincroft-mine_uk_257115): Tincroft Mine, UK — historic Cornish locality producing brown siderite on quartz with chalcopyrite and hematite, co-type locality for pharmacosiderite, prized… - [Tintic Mining District, USA Locality Guide](https://earthwonders.com/guides/tintic-mining-district_usa_573280): Tintic Mining District, Utah — renowned for dark azurite and malachite, olive olivenite, rare tellurates, and cabinet- and micromount-worthy specimens. - [Titanite](https://earthwonders.com/guides/titanite): Titanite — spearhead crystals with fiery dispersion in honey-brown to golden hues; Alpine twins on adularia give striking contrast, prized for form, luster, an… - [Titanite from Haramosh Mountains, Pakistan](https://earthwonders.com/guides/titanite_from_haramosh-mts_pakistan_105407): Titanite from Haramosh Mountains, Pakistan - vivid green crystals with sharp twins on clean matrix, alpine-twin elegance, and notable collector appeal. - [Titanite from Tormiq Valley, Pakistan](https://earthwonders.com/guides/titanite_from_tormiq-valley_pakistan_258853): Tormiq Titanite, Pakistan: Alpine-style, cleft-grown green twin crystals on adularia; a modern classic prized by collectors for color, form, and locality. - [Tomokoni mine, Bolivia Locality Guide](https://earthwonders.com/guides/tomokoni-mine_bolivia_258282): Tomokoni mine, Bolivia — premier vivianite locality with emerald-green, sword-shaped crystals on red sandstone; prized for pure presentation and collectability. - [Tongbei, China Locality Guide](https://earthwonders.com/guides/tongbei_china_258391): Tongbei, China locality: orange spessartine garnets in granite pockets with smoky quartz, iconic minerals prized by collectors for color and rarity. - [Tonglushan Mine, China Locality Guide](https://earthwonders.com/guides/tonglushan-mine_china_258452): Tonglushan Mine, China — a Cu-Fe-Au skarn locality known for peach to red calcite crystals and iridescent chalcopyrite balls, a top target for collectors. - [Tongren Mine, China Locality Guide](https://earthwonders.com/guides/tongren-mine_china_258465): Tongren Mine, China — renowned cinnabar locality famed for cherry-red to blood-red crystals, drill-bit twins on dolomite and quartz, prized by collectors. - [Topaz from Khoroshiv Raion, Ukraine](https://earthwonders.com/guides/topaz_from_khoroshiv-raion_ukraine_129254): Topaz from Khoroshiv Raion, Ukraine — renowned Volyn pegmatite chamber crystals, glassy, etched blocks in blue to sherry hues; prized for color zoning. - [Topaz from Ouro Preto, Brazil](https://earthwonders.com/guides/topaz_from_ouro-preto_brazil_190306): Ouro Preto topaz - renowned Brazilian locality producing imperial topaz in wine, honey, pink hues; gem crystals with sharp prisms, yet terminations are rare. - [Topaz from Jos Plateau, Nigeria](https://earthwonders.com/guides/topaz_from_jos-plateau_nigeria_124034): Jos Plateau topaz, Nigeria - famed for glassy colorless to pale blue crystals; durable, with fluorite inclusions and willemite findings. - [Topaz from Murzinka Mine, Russia](https://earthwonders.com/guides/topaz_from_murzinka-mine_russia_174672): Topaz from Murzinka Mine, Russia - pale blue to colorless, sharp orthorhombic crystals in pegmatite; prized for natural color, old provenance, and Urals charm. - [Topaz](https://earthwonders.com/guides/topaz): Topaz — hard, glassy orthorhombic crystals from pegmatites and rhyolites; colors range from colorless to pink; sharp terminations aid identification, localitie… - [Topaz from Katlang, Pakistan](https://earthwonders.com/guides/topaz_from_katlang_pakistan_127254): Katlang topaz, Ghundao Hill, Pakistan — natural pink to violet-pink crystals, chromium color, classic calcite-hosted veins; prized locality specimens. - [Topaz from Topaz Mountain, Utah, USA](https://earthwonders.com/guides/topaz_from_topaz-mountain_usa_258657): Topaz Mountain, Utah — classic American locality for rhyolite-hosted topaz, with sherry-amber crystals, public collecting access, and a collecting heritage. - [Topaz from Erongo Mountains, Namibia](https://earthwonders.com/guides/topaz_from_erongo-mountains_namibia_78994): The Erongo Mountains produce one of the more distinctive African topaz styles: pale blue, pale green, or colorless crystals from miarolitic cavities in a granite-dominated volcanic complex, often acco... - [Topaz Mountain, USA Locality Guide](https://earthwonders.com/guides/topaz-mountain_usa_258657): Topaz Mountain, Utah — vuggy Miocene-topaz locality yielding warm, glassy topaz prisms in pale rhyolite, with bixbyite and rare red beryl, highly prized by col… - [Topsham, USA Locality Guide](https://earthwonders.com/guides/topsham_usa_258749): Topsham, Maine - a compact pegmatite district known for beryl varieties, topaz, and rare minerals; prized for graphic pockets and diverse NYF assemblage. - [Torbernite](https://earthwonders.com/guides/torbernite): Torbernite - emerald-green, square tabular crystals with luster; vivid color, hydration (12H2O) vs metatorbernite, and uraniferous deposits boost appeal. - [Torbernite from Musonoi Mine, DR Congo](https://earthwonders.com/guides/torbernite_from_musonoi-mine_dr-congo_174788): Musonoi torbernite from Kolwezi, DR Congo - emerald-green, square tabular crystals with sharp outlines; prized for its classic locality and strong provenance. - [Tormiq Valley, Pakistan Locality Guide](https://earthwonders.com/guides/tormiq-valley_pakistan_258853): A collector's guide to Tormiq Valley, Pakistan: its geology, mining history and notable minerals, illustrated with the 141 specimens documented from this locality on EarthWonders. - [Torr Works Quarry, UK Locality Guide](https://earthwonders.com/guides/torr-works-quarry_uk_259048): A collector's guide to Torr Works Quarry, UK: its geology, mining history and notable minerals, illustrated with the 43 specimens documented from this locality on EarthWonders. - [Total Wreck Mine, USA Locality Guide](https://earthwonders.com/guides/total-wreck-mine_usa_259149): Total Wreck Mine, Arizona — oxidized Pb-Ag-Cu-Mo-V-Zn deposit famed for wulfenite crystals on stained limestone, with mottramite and vanadates. - [Touissit, Morocco Locality Guide](https://earthwonders.com/guides/touissit_morocco_259220): A collector's guide to Touissit, Morocco: its geology, mining history and notable minerals, illustrated with the 630 specimens documented from this locality on EarthWonders. - [Tourmaline from Paprok, Afghanistan](https://earthwonders.com/guides/tourmaline_from_paprok_afghanistan_192559): Paprok, Afghanistan - tourmaline from a famed elbaite locality, color-zoned, prismatic crystals, prized by collectors for form and locality. - [Tourmaline from Cruzeiro Mine, Brazil](https://earthwonders.com/guides/tourmaline_from_cruzeiro-mine_brazil_61348): Tourmaline from Cruzeiro Mine, Brazil - vivid color zoning, large elbaite crystals, and rich pocket contexts, prized by collectors for variety and quality. - [Tourmaline from Jonas Mine, Brazil](https://earthwonders.com/guides/tourmaline_from_jonas-mine_brazil_123656): Jonas Mine, Brazil — premier tourmaline locality for deep red rubellite (elbaite) in pegmatites; famed specimens, iconic color, and strong collector appeal. - [Tourmaline from Madagascar, Madagascar](https://earthwonders.com/guides/tourmaline_from_madagascar_102): Madagascar is one of the great names in tourmaline collecting, not because it produced the most tourmaline, but because it produced some of the most visually distinctive tourmaline ever cut, polished,... - [Tourmaline from Madagascar](https://earthwonders.com/guides/tourmaline-from_madagascar_madagascar_102): Liddicoatite, Madagascar tourmaline with vivid polychrome zoning and triangular color sectors; prized type-locality specimen for collectors. - [Tourmaline from Cruzeiro mine](https://earthwonders.com/guides/tourmaline-from_cruzeiro-mine_brazil_61348): Cruzeiro Mine, Brazil - renowned for hot-pink to red rubellite and verdelite tourmalines; crystals with albite or quartz matrix, prized by collectors. - [Tourmaline from Jonas Mine](https://earthwonders.com/guides/tourmaline-from_jonas-mine_brazil_123656): Tourmaline rubellite - cranberry-red, gemmy, freestanding crystals with flat terminations and striated sides; rare, highly coveted Jonas Mine specimens. - [Tourmaline from Barra Do Salinas District, Brazil](https://earthwonders.com/guides/tourmaline_from_barra-do-salinas-district_brazil_17943): Tourmaline from Barra do Salinas District, Brazil — elbaite with green-pink zoning, scepter terminations, and Barra-style clarity prized by collectors. - [Tourmaline from Rubaya, Dr Congo](https://earthwonders.com/guides/tourmaline_from_rubaya_dr-congo_218615): Rubaya tourmaline, North Kivu, DRC, elbaite crystals with glassy luster, sharp terminations, and vivid pink to green colors prized by serious collectors. - [Tourmaline from Pederneira mine](https://earthwonders.com/guides/tourmaline-from_pederneira-mine_brazil_194601): Pederneira tourmaline — spectacular multi-color clusters with bluecap and rocket pockets, famed color zoning on albite and lepidolite, prized by collectors. - [Tourmaline from Paprok](https://earthwonders.com/guides/tourmaline-from_paprok_afghanistan_192559): Nuristan, Afghanistan tourmaline from Paprok, Mawi, and Kunar mines; bi-color watermelons in pink and green, prized for clarity, color, and classic termination - [Tourmaline from Rubaya](https://earthwonders.com/guides/tourmaline-from_rubaya_dr-congo_218615): Rubaya tourmaline, North Kivu, D.R. Congo — gem-clear, bi- to tri-colored crystals with sharp terminations, prized for transparency, color zoning, and rarity. - [Tourmaline from Pederneira Mine, Brazil](https://earthwonders.com/guides/tourmaline_from_pederneira-mine_brazil_194601): Pederneira Mine, Brazil — landmark locality for collector-grade elbaite tourmaline; saturated colors, high transparency, and iconic pocket assortments. - [Tourmaline from Pala Mining District](https://earthwonders.com/guides/tourmaline-from_pala-mining-district_usa_191689): Pala District, California - famous for pink elbaite tourmaline and bi-color blue-cap crystals from Tourmaline Queen and Himalaya, prized for color and history. - [Tourmaline from Pala Mining District, USA](https://earthwonders.com/guides/tourmaline_from_pala-mining-district_usa_191689): Tourmaline from Pala Mining District, USA—elbaite and schorl with pink, blue, green hues, color zoning, and the iconic Tourmaline Queen blue-capped crystals. - [Tourmaline from Tourmaline Queen Mine, USA](https://earthwonders.com/guides/tourmaline_from_tourmaline-queen-mine_usa_259291): Tourmaline from Tourmaline Queen Mine: thick, lustrous crystals; rubellite-red to indicolite-blue interiors; iconic blue-cap varieties and collecting appeal. - [Tourmaline from Barra do Salinas District](https://earthwonders.com/guides/tourmaline-from_barra-do-salinas-district_brazil_17943): Barra de Salinas tourmaline, Brazil — watermelon crystals with pink cores and green rims, sharp terminations and vivid color zoning, prized by collectors. - [Tourmaline](https://earthwonders.com/guides/tourmaline): Tourmaline: color range and crystal variety define a diverse group; top localities, value factors, quality assessment, and care tips for collectors. - [Tourmaline King Mine, USA Locality Guide](https://earthwonders.com/guides/tourmaline-king-mine_usa_259285): Tourmaline King Mine, USA — classic Pala district locality famed for rubellite and multicolored elbaite, rare-element pegmatites, and historic specimens. - [Tourmaline Queen Mine, USA Locality Guide](https://earthwonders.com/guides/tourmaline-queen-mine_usa_259291): A collector's guide to Tourmaline Queen Mine, USA: its geology, mining history and notable minerals, illustrated with the 144 specimens documented from this locality on EarthWonders. - [Tranomaro-Maromby area, Madagascar Locality Guide](https://earthwonders.com/guides/tranomaro-maromby-area_madagascar_259770): Tranomaro-Maromby area, Madagascar: key source of grandidierite in weathered pegmatites and hibonite-corundum skarns, highly prized by collectors. - [Traversella Mine, Italy Locality Guide](https://earthwonders.com/guides/traversella-mine_italy_259906): Traversella Mine, Italy — Alpine skarn locality famed for large carbonates, amethystine quartz, iron oxides, sulfides, and scheelite; a prized Piedmont collect… - [Treasure Mountain Diamond Mine, USA Locality Guide](https://earthwonders.com/guides/treasure-mountain-diamond-mine_usa_260015): Treasure Mountain Diamond Mine, USA — renowned for doubly terminated scepter-bearing Herkimer quartz with dark, hydrocarbon-included stems and vug crystals. - [Trepča complex, Kosovo Locality Guide](https://earthwonders.com/guides/trepa-complex_kosovo_260390): A collector's guide to Trepča complex, Kosovo: its geology, mining history and notable minerals, illustrated with the 123 specimens documented from this locality on EarthWonders. - [Trepča Stari Trg Mine, Kosovo Locality Guide](https://earthwonders.com/guides/trepca-stari-trg-mine_kosovo_260391): Trepča Stari Trg Mine, Kosovo — renowned for black, lustrous sphalerite with brassy pyrite, steel-gray galena, arsenopyrite, and carbonates; a premier locality… - [Trimouns Talc Mine, France Locality Guide](https://earthwonders.com/guides/trimouns-talc-mine_france_260783): A collector's guide to Trimouns Talc Mine, France: its geology, mining history and notable minerals, illustrated with the 59 specimens documented from this locality on EarthWonders. - [Tsehay Mewcha, Ethiopia Locality Guide](https://earthwonders.com/guides/tsehay-mewcha_ethiopia_261561): Tsehay Mewcha, Ethiopia - a noted opal locality famed for bright white to fire opal with digit patterns, hydrophane opal-CT, and pedogenic formation. - [Tsumeb Mine, Namibia Locality Guide](https://earthwonders.com/guides/tsumeb-mine_namibia_573706): Tsumeb Mine, Namibia - a classic locality famous for dramatic color contrasts and a vast mineral range, from azurite and malachite to dioptase and cerussite. - [Tsumeb, Namibia Locality Guide](https://earthwonders.com/guides/tsumeb_namibia_261664): Tsumeb, Namibia — world-renowned locality famed for a rich copper–lead–zinc ore pipe, with dioptase on calcite, azurite blades, and smithsonite prized by colle… - [Tubussis, Karibib District, Namibia Locality Guide](https://earthwonders.com/guides/tubussis-karibib-district_namibia_573330): Tubussis, Namibia — a premier garnet locality known for Green Dragon demantoid in marble/skarn, with sharp, gemmy green crystals prized by collectors. - [Tunaberg, Sweden Locality Guide](https://earthwonders.com/guides/tunaberg_sweden_262066): Tunaberg, Sweden - classic cobalt locality famed for cobaltite on chalcopyrite, old-stock pieces, and type-locality status for kieftite and oenite. - [Tuolumne County, USA Locality Guide](https://earthwonders.com/guides/tuolumne-county_usa_573234): Tuolumne County - a classic California gold locality famed for sculptural native gold and gold-in-quartz, with placer and lode finds prized by collectors. - [Turkana County, Kenya Locality Guide](https://earthwonders.com/guides/turkana-county_kenya_262375): A collector's guide to Turkana County, Kenya: its geology, mining history and notable minerals, illustrated with the 34 specimens documented from this locality on EarthWonders. - [Türkiye Locality Guide](https://earthwonders.com/guides/trkiye_181): Türkiye - a mineral province in Anatolia, famed for western borate basins (colemanite, ulexite) and gemmy Kestelek crystals, with diverse evaporite assemblages. - [Turquoise](https://earthwonders.com/guides/turquoise): Turquoise - prized for saturated blue-to-teal colors and spiderweb matrix; localities such as Nishapur, Bisbee, Morenci drive collecting of natural nodules. - [Turquoise from Sonora, Mexico](https://earthwonders.com/guides/turquoise_from_sonora_mexico_241378): Turquoise from Sonora, Mexico, a family of copper-rich localities (Campitos, La Mariquita, La Caridad, Baviácora, Nacozari) prized for vivid blues, color range… - [Turquoise from Nevada, USA](https://earthwonders.com/guides/turquoise_from_nevada_usa_178330): Nevada turquoise — diverse appearances from Royston to Lone Mountain, supergene deposits, and coveted by serious collectors. - [Turt Mine, Romania Locality Guide](https://earthwonders.com/guides/turt-mine_romania_574853): A collector's guide to Turt Mine, Romania: its geology, mining history and notable minerals, illustrated with the 112 specimens documented from this locality on EarthWonders. - [Turț, Romania Locality Guide](https://earthwonders.com/guides/tur_romania_262597): Turț, Romania — Oaș Mountains locality yielding galena, sphalerite, siderite, calcite rosettes, barite; famed for siderite-after-calcite and calcite flower spe… - [Tuscany, Italy Locality Guide](https://earthwonders.com/guides/tuscany_italy_262642): A collector's guide to Tuscany, Italy: its geology, mining history and notable minerals, illustrated with the 109 specimens documented from this locality on EarthWonders. - [Twin Creeks Mine, USA Locality Guide](https://earthwonders.com/guides/twin-creeks-mine_usa_262985): Twin Creeks Mine, Nevada - renowned orpiment locality with lustrous golden-orange crystals, transparency, and collector appeal from the Mega Pit. - [Tyrol, Austria Locality Guide](https://earthwonders.com/guides/tyrol_austria_263299): Tyrol, Austria — renowned alpine quartz and amethyst crystals, plus historic fahlore and copper minerals; a dual locality prized by collectors. - [Uchucchacua Mine, Peru Locality Guide](https://earthwonders.com/guides/uchucchacua-mine_peru_263450): A collector's guide to Uchucchacua Mine, Peru: its geology, mining history and notable minerals, illustrated with the 262 specimens documented from this locality on EarthWonders. - [Udachnaya Pipe, null Locality Guide](https://earthwonders.com/guides/udachnaya-pipe_null_573322): Udachnaya Pipe - Siberian diamond locality famed for pristine kimberlite and rare minerals like amakinite and zemkorite, prized by collectors. - [Ullcoats Mine, UK Locality Guide](https://earthwonders.com/guides/ullcoats-mine_uk_263857): Ullcoats Mine, UK — West Cumbrian locality known for pale blue fluorite on creamy dolomite, iron-oxide hematite, and lough-hole specimens prized by collectors. - [Upper Kohistan District, Pakistan Locality Guide](https://earthwonders.com/guides/upper-kohistan-district_pakistan_278052): Upper Kohistan District, Pakistan - an ultramafic locality yielding forsterite (peridot) crystals and Kohala baryte, with rare PGE minerals for collectors. - [Upper New Street Quarry, USA Locality Guide](https://earthwonders.com/guides/upper-new-street-quarry_usa_278106): Upper New Street Quarry, USA - classic Paterson trap-rock locality in New Jersey, famed for water-green prehnite and zeolites with sculptural forms. - [Urad Mine, near Empire, Clear Creek County, USA Locality Guide](https://earthwonders.com/guides/urad-mine-near-empire-clear-creek-county_usa_574668): Urad Mine, Colorado — notable locality for rhodochrosite on quartz and purple fluorite; small, colorful specimens with strong collector value. - [Ural Mountains, Russia Locality Guide](https://earthwonders.com/guides/ural-mountains_russia_278292): Ural Mountains, Russia — a mineral province offering malachite, emerald, alexandrite, topaz, and more; three collecting traditions and historic copper mines. - [Uranium Mine No.21, Czech Republic Locality Guide](https://earthwonders.com/guides/uranium-mine-no21_czech-republic_573215): Uranium Mine No.21, Czech Republic - a Příbram locality famed for distinctive dyscrasite and native silver pseudomorphs in Ag-Sb-U veins, prized by collectors. - [Uri, Switzerland Locality Guide](https://earthwonders.com/guides/uri_switzerland_278473): A collector's guide to Uri, Switzerland: its geology, mining history and notable minerals, illustrated with the 77 specimens documented from this locality on EarthWonders. - [Urucum claim, Brazil Locality Guide](https://earthwonders.com/guides/urucum-claim_brazil_278536): A collector's guide to Urucum claim, Brazil: its geology, mining history and notable minerals, illustrated with the 133 specimens documented from this locality on EarthWonders. - [USA Locality Guide](https://earthwonders.com/guides/usa_189): USA localities - vast collecting diversity, from Franklin–Sterling Hill and Bisbee to Elmwood and Keweenaw, with iconic specimens and varied ore deposits. - [Ústí nad Labem Region, Czech Republic Locality Guide](https://earthwonders.com/guides/st-nad-labem-region_czech-republic_279024): Ústí nad Labem Region - European mineral province famed for zeolite-lined vesicles, gemmy aragonite from Číčov, and notable localities such as Mariánská skála… - [Utah, USA Locality Guide](https://earthwonders.com/guides/utah_usa_279060): A collector's guide to Utah, USA: its geology, mining history and notable minerals, illustrated with the 198 specimens documented from this locality on EarthWonders. - [Uvite](https://earthwonders.com/guides/uvite): Uvite — calcium–magnesium tourmaline with greens to brown colors, lustrous blocky crystals on carbonate matrices, notable localities like Brumado and Sri Lanka. - [Uvite from Mogok Valley, Myanmar](https://earthwonders.com/guides/uvite_from_mogok-valley_myanmar_571970): Uvite - emerald-green, stout, translucent tourmaline crystals from Mogok Valley, Myanmar; calcium-rich chemistry, strong provenance, and collector appeal. - [Uvite from Brumado, Bahia, Brazil](https://earthwonders.com/guides/uvite_from_brumado_brazil_35493): Brumado uvite — Brumado, Serra das Éguas magnesite district; glassy green to red-brown tourmaline on magnesite/quartz, a classic, collectible uvite locality. - [Vaca Morta quarry, Brazil Locality Guide](https://earthwonders.com/guides/vaca-morta-quarry_brazil_574913): Vaca Morta quarry, Brazil - a key collector locality famous for blue dumortierite in quartz, sharp crystals with electric-blue needles, and its metamorphic tal… - [Vakinankaratra, Madagascar Locality Guide](https://earthwonders.com/guides/vakinankaratra_madagascar_279616): Vakinankaratra, Madagascar — classic pegmatite locality yielding gem tourmalines, liddicoatite, rhodizite, and beryl; diverse crystals prized by collectors. - [Valais, Switzerland Locality Guide](https://earthwonders.com/guides/valais_switzerland_279631): A collector's guide to Valais, Switzerland: its geology, mining history and notable minerals, illustrated with the 49 specimens documented from this locality on EarthWonders. - [Valenciana Mine, Mexico Locality Guide](https://earthwonders.com/guides/valenciana-mine_mexico_279964): Valenciana Mine, Mexico — famed epithermal silver locality, with lavender amethyst over calcite and valencianite adularia; historic Veta Madre mine, collectibl… - [Val Giuv, Switzerland Locality Guide](https://earthwonders.com/guides/val-giuv_switzerland_280060): A collector's guide to Val Giuv, Switzerland: its geology, mining history and notable minerals, illustrated with the 55 specimens documented from this locality on EarthWonders. - [Val Nalps, Switzerland Locality Guide](https://earthwonders.com/guides/val-nalps_switzerland_280450): Val Nalps, Switzerland - Alpine locality famed for sharp quartz on schist, phantoms and rutile needles, with historic Pb-Ag-Zn mines, prized by collectors. - [Vanadinite from Touissit, Morocco](https://earthwonders.com/guides/vanadinite_from_touissit_morocco_259220): Touissit, Morocco vanadinite - olive to cream hexagonal prisms with a silvery luster; arsenic-bearing variety once called endlichite, a key locality in Touissi… - [Vanadinite](https://earthwonders.com/guides/vanadinite): Vanadinite: vivid red-to-orange hexagonal barrels with bright luster; secondary lead mineral from oxidized zones, famed in Mibladen, Morocco, prized for color. - [Vanadinite from Mibladen, Morocco](https://earthwonders.com/guides/vanadinite_from_mibladen-mining-district_morocco_163618): Vanadinite — red to orange-red hexagonal crystals with luster on baryte; iconic Mibladen, Morocco specimens formed as late lead vanadate in arid limestone. - [Vanadinite from San Carlos Mine, Chihuahua, Mexico](https://earthwonders.com/guides/vanadinite_from_san-carlos-mine_mexico_225100): Vanadinite from San Carlos Mine, Chihuahua, Mexico - classic Apex Mine material with elongated hexagonal prisms in butterscotch to rust colors, clusters. - [Vanadinite from Yuma Mine, Arizona, USA](https://earthwonders.com/guides/vanadinite_from_yuma-mine_usa_297997): Old Yuma Mine, Tucson Mountains, Arizona: vanadinite famed for fiery red-orange barrels, superb luster, and a historic U.S. locality prized by collectors. - [Variscite](https://earthwonders.com/guides/variscite): Variscite - green hues with spiderweb patterns; valued nodules and micro-mounts for collecting and jewelry, sourced from Utah, Nevada, Germany, Brazil. - [Variscite from Clay Canyon Mine, Utah, USA](https://earthwonders.com/guides/variscite_from_clay-canyon-mine_usa_52340): Clay Canyon, Utah — renowned phosphate locality yielding variscite nodules and rare phosphates like englishite and wardite; prized by collectors. - [Värmland County, Sweden Locality Guide](https://earthwonders.com/guides/vrmland-county_sweden_280965): Värmland County, Sweden — home to Långban-type assemblage (pyrosmalite-(Fe), hedenbergite, hausmannite, calcite) and dense, rare mineral deposits prized by col… - [Vauxite from Huanuni Mine, Bolivia](https://earthwonders.com/guides/vauxite_from_huanuni-mine_bolivia_114496): Vauxite - blue hydrous phosphate from Huanuni Mine, Bolivia; prized for delicate blue tabular forms, rarity, and storied provenance in the Bolivian tin belt. - [Vauxite from Siglo Veinte Mine, Bolivia](https://earthwonders.com/guides/vauxite_from_siglo-veinte-mine_bolivia_236034): Vauxite from Siglo Veinte Mine, Bolivia: rare blue phosphate crystals in radiating aggregates, Bolivian type locality prized for rarity and provenance. - [Vauxite](https://earthwonders.com/guides/vauxite): Vauxite — a rare hydrated iron–aluminum phosphate with sky-to-cornflower-blue rosettes and delicate micaceous laths; Bolivian localities mark its rarity. - [Veracruz, Mexico Locality Guide](https://earthwonders.com/guides/veracruz_mexico_282074): A collector's guide to Veracruz, Mexico: its geology, mining history and notable minerals, illustrated with the 192 specimens documented from this locality on EarthWonders. - [Verkhnii Mine, Russia Locality Guide](https://earthwonders.com/guides/verkhnii-mine_russia_282266): Verkhnii Mine, Russia — historic Dalnegorsk locality yielding sharp calcite crystals and manganese-rich varieties; prized by collectors for provenance. - [Vesper Peak, USA Locality Guide](https://earthwonders.com/guides/vesper-peak_usa_282596): Vesper Peak, USA - defining American locality for grossular garnet, notable for lustrous orange to cinnamon crystals and rugged alpine collecting history. - [Vesuvianite from Jeffrey Mine, Québec, Canada](https://earthwonders.com/guides/vesuvianite_from_jeffrey-mine_canada_121627): Vesuvianite — Jeffrey Mine, Québec: sharp, glassy tetragonal prisms in vivid green to violet hues, formed in rodingite; a classic, collector-worthy crystal. - [Vesuvianite](https://earthwonders.com/guides/vesuvianite): Vesuvianite - crisp prismatic crystals in vivid colors, from chrome-green to rare sky-blue cyprine; formed in contact metamorphism, prized for termination. - [Vesuvianite from Somma-Vesuvius Complex, Italy](https://earthwonders.com/guides/vesuvianite_from_somma-vesuvius-complex_italy_241152): Vesuvianite from Somma-Vesuvius Complex, Italy — brown to golden-brown, short-prismatic crystals; a classic, scholarly European locality prized by collectors. - [Vesuvianite from Bellecombe, Aosta Valley, Italy](https://earthwonders.com/guides/vesuvianite_from_bellecombe_italy_21203): Bellecombe vesuvianite: Alpine locality famed for sharp, prism crystals in rodingite-serpentinite, olive-green to wine-red hues, prized for form by collectors. - [Veszelyite](https://earthwonders.com/guides/veszelyite): Veszelyite - vivid blue copper-zinc phosphate with sharp prisms in radiating sprays; rare and highly prized by collectors, with Tsumeb pieces and newer finds. - [Veszelyite from Black Pine Mine, Montana, USA](https://earthwonders.com/guides/veszelyite_from_black-pine-mine_usa_27085): Black Pine Mine, Montana — American classic for veszelyite: blue-green, elongated crystals on quartz with oxidized-vein; prized for provenance and rarity. - [Viburnum Trend Mining District, USA Locality Guide](https://earthwonders.com/guides/viburnum-trend-mining-district_usa_282857): A collector's guide to Viburnum Trend Mining District, USA: its geology, mining history and notable minerals, illustrated with the 76 specimens documented from this locality on EarthWonders. - [Victoria, Australia Locality Guide](https://earthwonders.com/guides/victoria_australia_282946): Victoria, Australia — a collector’s province known for iconic native gold from Bendigo, Ballarat and Woods Point, plus Mooralla smoky quartz geodes and a rich… - [Victoria de Durango, Mexico Locality Guide](https://earthwonders.com/guides/victoria-de-durango_mexico_282963): A collector's guide to Victoria de Durango, Mexico: its geology, mining history and notable minerals, illustrated with the 35 specimens documented from this locality on EarthWonders. - [Vietnam Locality Guide](https://earthwonders.com/guides/vietnam_193): Vietnam, diverse gem provinces from Luc Yen’s ruby, spinel, and sea-blue aquamarine from Xuan Le; prized for high-contrast specimens and pegmatite origins. - [Viloco Mine, Bolivia Locality Guide](https://earthwonders.com/guides/viloco-mine_bolivia_284373): Viloco Mine, Bolivia — premier cassiterite locality famed for sharp, twinned crystals with notable translucency; top specimens rival gem-quality rough. - [Virgem da Lapa, Brazil Locality Guide](https://earthwonders.com/guides/virgem-da-lapa_brazil_284621): Virgem da Lapa, Brazil - classic pegmatite locality producing gem elbaite in greens, blues and pinks, blue topaz, and pocket crystals prized by collectors. - [Virginia, USA Locality Guide](https://earthwonders.com/guides/virginia_usa_284654): Virginia, USA — a collector-focused locality guide highlighting Lynch Station turquoise, prehnite/apophyllite pockets, and spessartine from Amelia County. - [Virgin Valley District, null Locality Guide](https://earthwonders.com/guides/virgin-valley-district_null_573341): Virgin Valley District, Nevada's premier black opal locality, yields precious opal in wood casts and crystal pieces, famed for collecting and fee-dig access. - [Virtuous Lady Mine, UK Locality Guide](https://earthwonders.com/guides/virtuous-lady-mine_uk_284793): Virtuous Lady Mine, UK — classic British locality famed for siderite epimorphs (boxes, Lady's Slippers) and copper-tin-iron minerals, a magnet for collectors. - [Vivianite from Huanuni Mine, Bolivia](https://earthwonders.com/guides/vivianite_from_huanuni-mine_bolivia_114496): Huanuni vivianite, Bolivia — renowned for sharp, gemmy green blades on matrix, striking luster and contrast, notable as a rare phosphate from a major tin depos… - [Vivianite from Siglo Veinte Mine, Bolivia](https://earthwonders.com/guides/vivianite_from_siglo-veinte-mine_bolivia_236034): Vivianite from Siglo Veinte Mine, Bolivia - a famed Llallagua locality for blue-green Vivianite and related vauxite-family phosphates, prized by collectors. - [Vivianite from Tomokoni Mine, Bolivia](https://earthwonders.com/guides/vivianite_from_tomokoni-mine_bolivia_258282): Vivianite from Tomokoni Mine, Bolivia: sharp, glassy green crystals on red sandstone, prized for purity, timing, and matrix retention. - [Vivianite](https://earthwonders.com/guides/vivianite): Vivianite: color-changing, pleochroic crystals from Bolivia, prized for prisms and velvety luster on matrix; rare, collectible, with light-sensitive care. - [Vorderer Zinggenstock, Switzerland Locality Guide](https://earthwonders.com/guides/vorderer-zinggenstock_switzerland_285432): Vorderer Zinggenstock, Switzerland — Alpine cleft locality famed for historic quartz finds, smoky quartz, and pink fluorite octahedra, prized by collectors. - [Wadi El-Natrun Depression, Egypt Locality Guide](https://earthwonders.com/guides/wadi-el-natrun-depression_egypt_286062): Wadi El-Natrun Depression, Egypt: a premier evaporite locality yielding trona, halite, thenardite and related salts; prized for delicate, architectural crystal… - [Wagholi Quarries, India Locality Guide](https://earthwonders.com/guides/wagholi-quarries_india_286150): Wagholi Quarries, India — famed cavansite and pentagonite with electric-blue rosettes and sprays on Deccan basalt; a premier collecting locality. - [Wah Wah Mountains, USA Locality Guide](https://earthwonders.com/guides/wah-wah-mountains_usa_286224): Wah Wah Mountains, USA: source of gem-quality red beryl at the Ruby Violet mines; prized for vivid color, sharp hexagonal prisms, and cabinet specimens. - [Wales, UK Locality Guide](https://earthwonders.com/guides/wales_uk_286509): Wales, UK — a compact mineral province with diverse localities, classic type specimens like brookite and anglesite, and historic mines prized by collectors. - [Wallaroo Mine, Australia Locality Guide](https://earthwonders.com/guides/wallaroo-mine_australia_286673): Wallaroo Mine, Australia: classic source of dark green atacamite with prismatic crystals on oxidised copper matrix, prized for color, form, and context. - [Walworth Quarry, USA Locality Guide](https://earthwonders.com/guides/walworth-quarry_usa_286905): Walworth Quarry - western New York's classic locality yielding clear blue fluorite cubes on dolomite, prized for clarity, geometry, and collector appeal. - [Wanlockhead, UK Locality Guide](https://earthwonders.com/guides/wanlockhead_uk_287066): A collector's guide to Wanlockhead, UK: its geology, mining history and notable minerals, illustrated with the 24 specimens documented from this locality on EarthWonders. - [Wanni glacier - Scherbadung area, Switzerland Locality Guide](https://earthwonders.com/guides/wanni-glacier-scherbadung-area_switzerland_287086): A collector's guide to Wanni glacier - Scherbadung area, Switzerland: its geology, mining history and notable minerals, illustrated with the 78 specimens documented from this locality on EarthWonders. - [Wardite](https://earthwonders.com/guides/wardite): Wardite — striking pseudo-hexagonal dipyramidal crystals, colorless to pale mint-yellow, with vitreous luster; a collectible benchmark for form and rarity. - [Wardite from Clay Canyon Mine, Utah, USA](https://earthwonders.com/guides/wardite_from_clay-canyon-mine_usa_52340): Wardite from Clay Canyon Mine, Utah — type-locality material prized for phosphate mosaics with variscite cores, yellow crandallite rims, and blue-gray wardite. - [Warmbad, Namibia Locality Guide](https://earthwonders.com/guides/warmbad_namibia_287335): Warmbad, Namibia - a notable zinc locality producing tarbuttite, smithsonite, skorpionite; gemmy greens and rare secondary crystals prized by collectors. - [Washington Pass, USA Locality Guide](https://earthwonders.com/guides/washington-pass_usa_287759): Washington Pass, USA — premier alkaline-granite locality for zektzerite and REE minerals in miarolitic cavities, with pale pink crystals and arfvedsonite. - [Washington, USA Locality Guide](https://earthwonders.com/guides/washington_usa_287658): A collector's guide to Washington, USA: its geology, mining history and notable minerals, illustrated with the 48 specimens documented from this locality on EarthWonders. - [Wavellite](https://earthwonders.com/guides/wavellite): Wavellite — radiating starburst crystals in apple- to emerald-green; prized in Arkansas, Devon, Pennsylvania, and Turkey for color, form, and matrix displays. - [Wavellite from National Limestone Quarry No. 2, Mount Pleasant Mills, Pennsylvania, USA](https://earthwonders.com/guides/wavellite_from_national-limestone-quarry-no-2_usa_176541): Wavellite - Mount Pleasant Mills, Pennsylvania: yellow-green wavellite in sandstone, prized for large, vibrant specimens and its rising appeal to collectors. - [Wayne County, USA Locality Guide](https://earthwonders.com/guides/wayne-county_usa_288251): Wayne County, USA - a quarry and salt-mine locality with Devonian carbonates, celestine, calcite, fluorite, and evaporites; valued for context and rarity. - [Weilasituo Li-(Rb)-Sn-W deposit, China Locality Guide](https://earthwonders.com/guides/weilasituo-li-rb-sn-w-deposit_china_288656): A collector's guide to Weilasituo Li-(Rb)-Sn-W deposit, China: its geology, mining history and notable minerals, illustrated with the 26 specimens documented from this locality on EarthWonders. - [Weißeck area, Austria Locality Guide](https://earthwonders.com/guides/weieck-area_austria_288739): Weißeck, Austria — classic fluorite locality in the Alps, famed for high-Alpine pockets with sharp cube fluorite, dramatic color zoning, and translucence. - [Weloganite](https://earthwonders.com/guides/weloganite): Weloganite - rare sodium-strontium-zirconium carbonate prized for lemon to honey-yellow crystals; scarce type-locality material drives premiums for collectors. - [Weloganite from Francon Quarry, Montréal, Canada](https://earthwonders.com/guides/weloganite_from_francon-quarry_canada_86965): Francon Quarry, Montréal - weloganite’s type locality, famed for lemon-yellow, pseudo-hexagonal crystals in carbonate vugs; prized for locality and rarity. - [Wenshan, China Locality Guide](https://earthwonders.com/guides/wenshan_china_568155): Wenshan, China — collector locality famed for electric blue hemimorphite, blue aragonite, smithsonite with vivid calcite forms from zinc-bearing skarns. - [Wenshan Mine, China Locality Guide](https://earthwonders.com/guides/wenshan-mine_china_289159): Wenshan Mine, China — blue hemimorphite in botryoidal, sculptural crusts; a key locality in a skarn-rich belt near Vietnam, prized by collectors for color and… - [Wessels Mine, South Africa Locality Guide](https://earthwonders.com/guides/wessels-mine_south-africa_289263): A collector's guide to Wessels Mine, South Africa: its geology, mining history and notable minerals, illustrated with the 578 specimens documented from this locality on EarthWonders. - [West Camp, Mexico Locality Guide](https://earthwonders.com/guides/west-camp_mexico_289384): West Camp, Mexico - historic Santa Eulalia locality, producing creedite, rhodochrosite, and sulfides; prized for cavern-grown, multi-generation crystals. - [Western Australia, Australia Locality Guide](https://earthwonders.com/guides/western-australia_australia_289508): Western Australia, a vast mineral province yielding native gold, millerite sulfides, dravite crystals, and copper deposits, prized for strong locality identity. - [West Pasture Mine, UK Locality Guide](https://earthwonders.com/guides/west-pasture-mine_uk_290062): A collector's guide to West Pasture Mine, UK: its geology, mining history and notable minerals, illustrated with the 48 specimens documented from this locality on EarthWonders. - [Wet Grooves Mine, UK Locality Guide](https://earthwonders.com/guides/wet-grooves-mine_uk_290361): Wet Grooves Mine, UK — a Wensleydale lead-fluorite-baryte locality in North Yorkshire, prized for well-crystallised baryte and clear to pale yellow fluorite. - [Wheal Coates, UK Locality Guide](https://earthwonders.com/guides/wheal-coates_uk_290603): A collector's guide to Wheal Coates, UK: its geology, mining history and notable minerals, illustrated with the 45 specimens documented from this locality on EarthWonders. - [Wheal Gorland, UK Locality Guide](https://earthwonders.com/guides/wheal-gorland_uk_290708): A collector's guide to Wheal Gorland, UK: its geology, mining history and notable minerals, illustrated with the 208 specimens documented from this locality on EarthWonders. - [Wheal Jane, UK Locality Guide](https://earthwonders.com/guides/wheal-jane_uk_290747): Wheal Jane, UK — premier modern Cornish locality yielding ludlamite, cronstedtite, sphalerite and quartz pockets; type locality for ludlamite, prized by collec… - [Wheal Mary Anne, UK Locality Guide](https://earthwonders.com/guides/wheal-mary-anne_uk_290799): A collector's guide to Wheal Mary Anne, UK: its geology, mining history and notable minerals, illustrated with the 41 specimens documented from this locality on EarthWonders. - [Wheal Maudlin, UK Locality Guide](https://earthwonders.com/guides/wheal-maudlin_uk_290806): Wheal Maudlin, Cornwall - historic mine near Lostwithiel, famed for zoned siderite on quartz and a diverse suite of minerals, a prized collecting locality. - [Wheal Unity, UK Locality Guide](https://earthwonders.com/guides/wheal-unity_uk_290969): Wheal Unity, Cornwall — oxidized copper-arsenate minerals on quartz; prized for the old Cornish look, fibrous olivenite textures, and its historic collecting l… - [Wheatley Mines, USA Locality Guide](https://earthwonders.com/guides/wheatley-mines_usa_291014): Wheatley Mines, USA, a historic 19th-century lead-zinc locality near Phoenixville, PA, famed for pyromorphite and other oxidized sulfides prized by collectors. - [Whim Creek, Australia Locality Guide](https://earthwonders.com/guides/whim-creek_australia_291107): Whim Creek, Australia — a classic Western Australian copper locality known for wulfenite, azurite, malachite, chrysocolla, and striking supergene mineral archi… - [White Mountain Wilderness, USA Locality Guide](https://earthwonders.com/guides/white-mountain-wilderness_usa_291585): White Mountain Wilderness, USA — Sierra Blanca Smoky Bear quartz: glassy prismatic crystals with phantom zoning, high-altitude provenance, a prized collector l… - [White Pine Mine, USA Locality Guide](https://earthwonders.com/guides/white-pine-mine_usa_291630): White Pine Mine - Michigan sediment-hosted copper-silver deposit notable for delicate native copper leaves, rare native silver, and copper-in-calcite crystals. - [White Queen Mine, USA Locality Guide](https://earthwonders.com/guides/white-queen-mine_usa_291666): White Queen Mine, USA - premier Pala pegmatite locality famed for albite, cleavelandite, tourmaline, and peach-pink morganite; historic, collectible specimens. - [White Raven Mine, Ward, Boulder County, USA Locality Guide](https://earthwonders.com/guides/white-raven-mine-ward-boulder-county_usa_574676): White Raven Mine, Ward, Boulder County, USA - renowned for galena-siderite-baryte pockets and native silver; historic Colorado locality prized by collectors. - [Willemite from Sterling Hill Mine, New Jersey, USA](https://earthwonders.com/guides/willemite_from_sterling-hill-mine_usa_246301): Sterling Hill willemite is one of the classic collector materials of American mineralogy: a zinc silicate, Zn2SiO4, that can look modest in daylight and then turn electric green under ultraviolet ligh... - [Willemite](https://earthwonders.com/guides/willemite): Willemite — fluorescent zinc silicate with UV glow; daylight colors range from colorless to pistachio, iconic from Franklin–Sterling Hill and Tsumeb. - [Willemite from Franklin Mining District, New Jersey, USA](https://earthwonders.com/guides/willemite_from_franklin-mining-district_usa_87122): Willemite, Franklin Mining District — renowned for vivid shortwave UV fluorescence, daylight crystal variety, and the classic franklinite–calcite association. - [Willemite from Berg Aukas Mine, Namibia](https://earthwonders.com/guides/willemite_from_berg-aukas-mine_namibia_22408): Willemite from Berg Aukas, Namibia - pastel to ivory crystals, drusy sprays, stalactites, and UV fluorescence; prized for texture, color, and provenance. - [Willemite from Tsumeb, Namibia](https://earthwonders.com/guides/willemite_from_tsumeb_namibia_261664): Willemite — Tsumeb, Namibia: glassy to sparkling crystals in blue-green to champagne hues, botryoidal crusts and hexagonal prisms; classic oxide-zone formation. - [William Wise Mine, USA Locality Guide](https://earthwonders.com/guides/william-wise-mine_usa_292908): A collector's guide to William Wise Mine, USA: its geology, mining history and notable minerals, illustrated with the 28 specimens documented from this locality on EarthWonders. - [Winza, Tanzania Locality Guide](https://earthwonders.com/guides/winza_tanzania_293740): Winza, Tanzania — remote corundum locality famed for vivid ruby and sapphire colors and well-formed, transparent crystals prized by collectors. - [Witherite from Nentsberry Haggs Mine, Alston Moor, England](https://earthwonders.com/guides/witherite_from_nentsberry-haggs-mine_uk_177732): Witherite from Nentsberry Haggs Mine, England: distinctive pseudohexagonal crystals, radiating aggregates, and paragenesis with baryte, alstonite, and galena. - [Witherite](https://earthwonders.com/guides/witherite): Witherite: distinctive pseudo-hexagonal twin crystals, white-cream color, UV fluorescence, scarce, prized specimens from Settlingstones, Alston Moor. - [Witherite from Fallowfield Mine, Hexham, England](https://earthwonders.com/guides/witherite_from_fallowfield-mine_uk_81530): Fallowfield Mine, Hexham, England, a locality for witherite, known for doubly terminated, cyclic-twinned crystals on pale drusy matrix, often with alstonite. - [Witherite from Settlingstones Mine, England](https://earthwonders.com/guides/witherite_from_settlingstones-mine_uk_232978): Witherite, Settlingstones Mine, England: dense, lustrous white-to-cream crystals with twinned pseudo-hexagonal habit; historic, collectible English specimens. - [W.L. Davis-Deardorff Mine, USA Locality Guide](https://earthwonders.com/guides/wl-davis-deardorff-mine_usa_293976): W.L. Davis-Deardorff Mine, Illinois, quartz-rich Cave-In-Rock fluorite on drusy quartz with sphalerite and calcite, purple cubes; locality prized by collectors. - [Wolf Mine, Germany Locality Guide](https://earthwonders.com/guides/wolf-mine_germany_294171): Wolf Mine, Germany — European rhodochrosite locality famed for raspberry-red crystals in dark limonite pockets, with malachite-coated copper and minerals. - [Wolfsberg, Austria Locality Guide](https://earthwonders.com/guides/wolfsberg_austria_294213): A collector's guide to Wolfsberg, Austria: its geology, mining history and notable minerals, illustrated with the 38 specimens documented from this locality on EarthWonders. - [Wölsendorf fluorite mining district, Germany Locality Guide](https://earthwonders.com/guides/wlsendorf-fluorite-mining-district_germany_294300): A collector's guide to Wölsendorf fluorite mining district, Germany: its geology, mining history and notable minerals, illustrated with the 62 specimens documented from this locality on EarthWonders. - [Wood Mine, UK Locality Guide](https://earthwonders.com/guides/wood-mine_uk_294574): Wood Mine, UK - locality famed for vivid malachite and azurite staining in Triassic sandstone, rare secondary minerals, and its Scheduled Monument status. - [Wulfenite from Los Lamentos Mountains, Chihuahua, Mexico](https://earthwonders.com/guides/wulfenite_from_los-lamentos-mts_mexico_149945): Los Lamentos wulfenite, Chihuahua — thick, lustrous orange to caramel crystals from the Erupción-Ahumada system, renowned for color, variety, and collector app… - [Wulfenite from Rowley Mine, Arizona, USA](https://earthwonders.com/guides/wulfenite_from_rowley-mine_usa_218287): Wulfenite from Rowley Mine, Arizona: orange-to-honey glassy tabular blades on baryte, famed for transparency, beveled edges, and Rowley’s collector appeal. - [Wulfenite from Touissit, Oriental Region, Morocco](https://earthwonders.com/guides/wulfenite_from_touissit_morocco_259220): Touissit wulfenite has a look of its own: warm yellow to butterscotch-orange tabular crystals, commonly with sharp beveled edges, spread over dark gossan, pale dolomite, or mixed oxidized lead-zinc ma... - [Wulfenite from Glove Mine, Arizona, USA](https://earthwonders.com/guides/wulfenite_from_glove-mine_usa_94075): Glove Mine, Arizona: wulfenite with butterscotch to pale orange-yellow bladed crystals, often in dense vug linings; a classic locality prized by collectors. - [Wulfenite from Ojuela Mine, Mapimí, Durango, Mexico](https://earthwonders.com/guides/wulfenite_from_ojuela-mine_mexico_186119): Ojuela Mine, Mapimí, Durango, Mexico - Wulfenite known for orange-yellow prisms, often with mimetite and calcite; a premier, collector-favored locality. - [Wulfenite from Tsumeb, Namibia](https://earthwonders.com/guides/wulfenite_from_tsumeb_namibia_261664): Wulfenite from Tsumeb, Namibia offers a spectrum of colors from honey-yellow to blue, with varied habits and rich paragenesis that attract advanced collectors. - [Wulfenite from Red Cloud Mine, Arizona, USA](https://earthwonders.com/guides/wulfenite_from_red-cloud-mine_usa_210568): Red Cloud Mine, Arizona — wulfenite prized for saturated orange-red tablets, high luster, and upright, glassy crystals; renowned desert locality for collectors. - [Wulfenite](https://earthwonders.com/guides/wulfenite): Wulfenite — brilliant warm colors and square crystals; prized for rarity of pristine specimens and famed localities like Red Cloud, Touissit, Ojuela. - [Wuning Mine, China Locality Guide](https://earthwonders.com/guides/wuning-mine_china_295167): Wuning Mine, China - a modern stibnite locality famed for blade-like sprays with blue-gray luster from pocket finds; paragenesis with calcite and baryte. - [Wushan, China Locality Guide](https://earthwonders.com/guides/wushan_china_295205): Wushan, China — famed spessartine locality with orange garnets and smoky quartz; pocket-rich specimens that elevated Chinese spessartine in collecting circles. - [Wushan Spessartine Mine, China Locality Guide](https://earthwonders.com/guides/wushan-spessartine-mine_china_295209): A collector's guide to Wushan Spessartine Mine, China: its geology, mining history and notable minerals, illustrated with the 558 specimens documented from this locality on EarthWonders. - [Wutong Mine, China Locality Guide](https://earthwonders.com/guides/wutong-mine_china_295222): Wutong Mine, China - renowned rhodochrosite from Nanling locality, famed for large, floral pink-red crystals with fluorite and pyrite; prized by collectors. - [Wuzhou, China Locality Guide](https://earthwonders.com/guides/wuzhou_china_295245): Wuzhou, China: Wutong Mine yields iconic rhodochrosite crystals, petal-like rosettes in pink-red hues, making this locality a milestone for collectors. - [Xianghualing Mine, China Locality Guide](https://earthwonders.com/guides/xianghualing-mine_china_295513): A collector's guide to Xianghualing Mine, China: its geology, mining history and notable minerals, illustrated with the 220 specimens documented from this locality on EarthWonders. - [Xianghuapu Mine, China Locality Guide](https://earthwonders.com/guides/xianghuapu-mine_china_295515): A collector's guide to Xianghuapu Mine, China: its geology, mining history and notable minerals, illustrated with the 116 specimens documented from this locality on EarthWonders. - [Xia Yang Mine, China Locality Guide](https://earthwonders.com/guides/xia-yang-mine_china_295715): A collector's guide to Xia Yang Mine, China: its geology, mining history and notable minerals, illustrated with the 39 specimens documented from this locality on EarthWonders. - [Xiefang Mine, China Locality Guide](https://earthwonders.com/guides/xiefang-mine_china_573109): Xiefang Mine, China: fluorite deposit with green-to-purple fluorite, baryte, quartz, calcite, and pyrite; notable for large veins and striking museum specimens. - [Xihuashan ore field, China Locality Guide](https://earthwonders.com/guides/xihuashan-ore-field_china_295770): Xihuashan ore field, China — a historic tungsten–tin locality famed for Piaotang fluorite and quartz, with granitic-hydrothermal textures prized by collectors. - [Xikuangshan Sb Deposit, China Locality Guide](https://earthwonders.com/guides/xikuangshan-sb-deposit_china_295783): Xikuangshan Sb Deposit, China - a supergiant antimony locality famed for stibnite-calcite contrasts, mirror-bright blades, and classic collecting appeal. - [Xinjiang, China Locality Guide](https://earthwonders.com/guides/xinjiang_china_295868): Xinjiang, China — a metallogenic province famed for deep purple fluorite cubes with dolomite base, chrome-green diopside crystals, and turquoise deposits. - [Yanga Koubenza quarries, Republic of the Congo Locality Guide](https://earthwonders.com/guides/yanga-koubenza-quarries_republic-of-the-congo_296356): Yanga Koubenza quarries, Republic of the Congo - rising modern secondary-mineral locality prized for blue smithsonite, aurichalcite, and mimetite bonanza. - [Yangshuo Mine, China Locality Guide](https://earthwonders.com/guides/yangshuo-mine_china_296443): Yangshuo Mine, China — renowned for vivid pyromorphite hues and blue plumbogummite films, a significant Guangxi locality prized by serious collectors. - [Yaogangxian Mine, China Locality Guide](https://earthwonders.com/guides/yaogangxian-mine_china_296590): A collector's guide to Yaogangxian Mine, China: its geology, mining history and notable minerals, illustrated with the 1584 specimens documented from this locality on EarthWonders. - [Yates Mine, Canada Locality Guide](https://earthwonders.com/guides/yates-mine_canada_296739): Yates Mine, Canada - classic Grenville locality yielding fluorapatite crystals with calcite, purple fluorite, and diopside; prized for sculptural forms and his… - [Yavapai County, USA Locality Guide](https://earthwonders.com/guides/yavapai-county_usa_296762): Yavapai County, USA — Arizona’s premier mineral locality for quartz-vein gold, copper sulfides, and Jerome sulfates; prized for diversity and old-Arizona chara… - [Yongchun Co., China Locality Guide](https://earthwonders.com/guides/yongchun-co_china_568871): Yongchun fluorite from Xiayang Mine, Fujian — blue-violet, gemmy cuboctahedral crystals on quartz; prized for color, locality, and collector appeal. - [York Building Supply Quarry, USA Locality Guide](https://earthwonders.com/guides/york-building-supply-quarry_usa_297515): York Building Supply Quarry, USA - classic Pennsylvania calcite locality known for honey-yellow to burnt-orange crystals, twinned forms, and iconic pockets. - [Yukon, Canada Locality Guide](https://earthwonders.com/guides/yukon_canada_297945): Yukon, Canada: a key locality for phosphates like lazulite on siderite and quartz, with rare wardite and gormanite; Klondike native gold and historic silver-le… - [Yuma Mine, USA Locality Guide](https://earthwonders.com/guides/yuma-mine_usa_297997): Yuma Mine — a classic Arizona locality in the Tucson Mountains, prized for vivid vanadinite and wulfenite in oxidized ore, with notable cerussite and calcite. - [Yunchangping Mine, Dadongla, null Locality Guide](https://earthwonders.com/guides/yunchangping-mine-dadongla_null_573356): Yunchangping Mine, Dadongla, Guizhou, China — a premier cinnabar locality yielding jewel-red crystals on white dolomite and quartz, highly valued by collectors. - [Yunnan, China Locality Guide](https://earthwonders.com/guides/yunnan_china_298032): A collector's guide to Yunnan, China: its geology, mining history and notable minerals, illustrated with the 67 specimens documented from this locality on EarthWonders. - [Zacatecas, Mexico Locality Guide](https://earthwonders.com/guides/zacatecas_mexico_298217): Zacatecas, Mexico — renowned mining district with Ag-Pb-Zn-Cu-Au veins, historic silver ores, silvery wire on calcite, azurite-malachite, and Electric Opal. - [Zagi Mountain, Pakistan Locality Guide](https://earthwonders.com/guides/zagi-mountain_pakistan_298262): A collector's guide to Zagi Mountain, Pakistan: its geology, mining history and notable minerals, illustrated with the 143 specimens documented from this locality on EarthWonders. - [Zambezi valley, Zimbabwe Locality Guide](https://earthwonders.com/guides/zambezi-valley_zimbabwe_298383): Zambezi Valley, Zimbabwe — a modern quartz locality renowned for amethyst and smoky quartz sceptres, phantom growth, hematite inclusions, and label history. - [Zazafotsy Quarry,, null Locality Guide](https://earthwonders.com/guides/zazafotsy-quarry_null_573310): A collector's guide to Zazafotsy Quarry,, null: its geology, mining history and notable minerals, illustrated with the 51 specimens documented from this locality on EarthWonders. - [Zhaotong, China Locality Guide](https://earthwonders.com/guides/zhaotong_china_299088): Zhaotong, China — Qiaojia babingtonite localities yield jet-black crystals on pale green prehnite with quartz; notable for cabinet-quality, graphic displays pr… - [Zillertal, Austria Locality Guide](https://earthwonders.com/guides/zillertal_austria_299395): A collector's guide to Zillertal, Austria: its geology, mining history and notable minerals, illustrated with the 27 specimens documented from this locality on EarthWonders. - [Zimbabwe Locality Guide](https://earthwonders.com/guides/zimbabwe_196): Zimbabwe - a mineral province with Mashonaland pegmatites and the Sandawana emerald belt, yielding vivid euclase, emeralds, heliodor, and lithium minerals. - [Zinc Corporation Mine, Australia Locality Guide](https://earthwonders.com/guides/zinc-corporation-mine_australia_571659): Zinc Corporation Mine, Australia — a renowned Broken Hill locality yielding red rhodonite, alabandite on calcite, and rare bannisterite, prized by collectors. - [Zincolivenite from Tsumeb Mine, Namibia](https://earthwonders.com/guides/zincolivenite_from_tsumeb_namibia_261664): Zincolivenite from Tsumeb, Namibia, vivid green arsenate with color zoning and gemmy crystals; prized by collectors for locality rarity, beauty, and interest. - [Zincolivenite](https://earthwonders.com/guides/zincolivenite): Zincolivenite: emerald-green crystals in radiating sprays with vitreous to adamantine luster; notable localities, color, habit, and ID cues. - [Zinnwald, Germany Locality Guide](https://earthwonders.com/guides/zinnwald_germany_299503): Zinnwald, Germany - historic Erzgebirge locality famed for tin-tungsten greisen, zinnwaldite lithium mica, wolframite, scheelite, and quartz and cassiterite. - [Zircon](https://earthwonders.com/guides/zircon): Zircon: lustrous tetragonal crystals in cinnamon to red-brown hues, gemmy to opaque, high density, and a metamictization history that intrigues collectors. - [Zircon from Mogok Valley, Myanmar](https://earthwonders.com/guides/zircon_from_mogok-valley_myanmar_571970): Zircon — Mogok Valley, Myanmar: dense luster, honey-brown to greenish tones, and prized provenance from a famed gem district; strong appeal for collectors. - [Zoisite](https://earthwonders.com/guides/zoisite): Zoisite, a mineral with gem varieties like tanzanite, thulite, and anyolite; prismatic crystals, pleochroism, and key localities such as Merelani Hills. - [Zoisite from Merelani Hills, Tanzania](https://earthwonders.com/guides/zoisite_from_merelani-hills_tanzania_162307): Zoisite from Merelani Hills, Tanzania — blue-violet crystals with strong pleochroism, sharp form, and gem-like transparency; key collector details. - [Zriba-Village, Tunisia Locality Guide](https://earthwonders.com/guides/zriba-village_tunisia_568862): Zriba-Village, Tunisia - Hammam-Zriba mine, a flagship fluorite locality, yields Zriba celestine in blue to bluish-gray crystals with hematite staining, plus b… ## All species (733) - [Acanthite](https://earthwonders.com/species/acanthite): Acanthite Ag2S: metallic silver-gray hue, cubic to octahedral crystals, notable from Mexico and Germany, strong collecting appeal for classic sulfide specimens - [Actinolite](https://earthwonders.com/species/actinolite): Actinolite: green to dark green crystals, fibrous to prismatic habit, notable specimens from Pakistan, Tanzania, Austria, USA, and Namibia. - [Adamite](https://earthwonders.com/species/adamite): Adamite: emerald-green to yellow-green crystals with adamantine luster, notable from Mexico and Namibia, prized for vibrant color and radiating crystal habit. - [Aegirine](https://earthwonders.com/species/aegirine): Aegirine: dark green to black prismatic crystals, elongated habit, notable from Canada and Pakistan for tall, sharp blades - [Aeschynite](https://earthwonders.com/species/aeschynite): Aeschynite: dark brown to black prismatic crystals with bronze lustre, from Norway, Austria, Switzerland, Italy; notable for its crystal form and localities. - [Afghanite](https://earthwonders.com/species/afghanite): Afghanite: blue to azure feldspathoid, with pale to deep blue crystals from Afghanistan and Italy, prized for vivid coloration and well-formed crystals. - [Agate](https://earthwonders.com/species/agate): Agate: banded microcrystalline quartz with colorful exterior zones, notable from USA and Brazil, admired for patterns and color variegation - [Ajoite](https://earthwonders.com/species/ajoite): Ajoite: orange to greenish-blue blades and chrysanthemum clusters, notable localities in South Africa and the USA, prized for color and crystal habit - [Alabandite](https://earthwonders.com/species/alabandite): Alabandite MnS appears as metallic, steely gray to black crystals with a metallic lustre from notable localities such as Peru and Tanzania. - [Alamosite](https://earthwonders.com/species/alamosite): Alamosite: yellow-brown to orange-brown crystals, often tabular to prismatic, from notable Namibian localities with clean, lustrous habit - [Albite](https://earthwonders.com/species/albite): Albite - white, platy feldspar with vitreous luster from classic localities in Pakistan, Brazil, USA; ideal for cabinet displays and collecting foliated forms. - [Alexandrite](https://earthwonders.com/species/alexandrite): Alexandrite: color-change chrysoberyl variety notable for emerald-green to red-purple hues, with fine specimens from Zimbabwe, Brazil, Russia, and Afghanistan. - [Allanite](https://earthwonders.com/species/allanite): Allanite: greenish to brownish crystals showing lustrous prisms, notable for specimens from Norway and Namibia and attractive for classic mineral habit. - [Almandine](https://earthwonders.com/species/almandine): Almandine: deep red garnet with dodecahedral crystals, notable localities in USA and Madagascar, strong collecting appeal for color and crystal habit. - [Altaite](https://earthwonders.com/species/altaite): Altaite: metallic lead telluride with a bright metallic luster from notable localities like the USA, appealing for its dense, gray to silver habit. - [Alunite](https://earthwonders.com/species/alunite): Alunite: earthy to pinkish crystals, often tabular or prismatic, from notable localities like Chile and Taiwan, prized for color and tabular habit - [Amazonite](https://earthwonders.com/species/amazonite): Amazonite: green to blue-green microcline variety with pleochroism, notable localities in USA, Ethiopia, Myanmar, China, and Brazil. - [Amber](https://earthwonders.com/species/amber): Amber: warm honey color, often with trapped inclusions, notable localities in Colombia, Germany, and Italy offer collectible pieces with aging and provenance. - [Amethyst](https://earthwonders.com/species/amethyst): Amethyst: purple quartz with prismatic crystals, notable with geode specimens from Mexico and Brazil, prized for color zoning and crystal habit. - [Ammolite](https://earthwonders.com/species/ammolite): Ammolite: iridescent, fossilized ammonite shell with nacreous rainbow colors from Alberta and Korea, prized for rich color play and specimen history - [Analcime](https://earthwonders.com/species/analcime): Analcime: clear to white to colorless crystals with trapezohedral form, notable U.S., Italian, and Iranian localities for collectors - [Anapaite](https://earthwonders.com/species/anapaite): Anapaite: pale blue-green to green prismatic crystals, notable from Ukraine, with phosphates-rich habit and translucent to vitreous luster. - [Anatase](https://earthwonders.com/species/anatase): Anatase: transparent to pale brown crystals with columnar habit and vitreous luster from Norway, Switzerland, Pakistan, Brazil, and France. - [Andalusite](https://earthwonders.com/species/andalusite): Andalusite: its distinctive pleochroic colors, elongated prismatic crystals, and notable localities in Brazil, Austria, USA, Myanmar, and Russia. - [Andesine](https://earthwonders.com/species/andesine): Andesine: pale to pinkish orange crystals with glassy luster from Japan, notable for platy to prismatic habits and vibrant color varieties. - [Andorite](https://earthwonders.com/species/andorite): Andorite: dark metallic luster, cubic to striated crystals with lead, silver and antimony sulfides from Bolivia, Mexico, Romania offering vivid crystallography - [Andradite](https://earthwonders.com/species/andradite): Andradite: deep green to black garnet with adularescent facets, notable from Madagascar and Italy, prized for crystal clarity and color variety - [Angelite](https://earthwonders.com/species/angelite): Angelite: pale blue to blue-gray crystals in gypsum-like habit, notable localities include Peru and Germany, valued for its soft color and translucence - [Anglesite](https://earthwonders.com/species/anglesite): Anglesite: pale, translucent to opaque crystals often forming tabular, prismatic habits with a bright luster, from Morocco, Namibia, USA, Australia and Italy. - [Anhydrite](https://earthwonders.com/species/anhydrite): Anhydrite: colorless to grayish-blue crystals, often tabular or bladed, notable from Mexico and Peru for well-formed specimens. - [Anilite](https://earthwonders.com/species/anilite): Anilite: deep-brassy copper sulfide with a metallic luster, notable from Kazakhstan, Serbia, and the USA, prized for its rich color and crystal habit - [Ankerite](https://earthwonders.com/species/ankerite): Ankerite: pale brown to brownish-green rhombohedra; notable localities in UK, USA, Switzerland, Canada, Namibia; prized for color and crystal habit. - [Annabergite](https://earthwonders.com/species/annabergite): Annabergite: green to emerald crystals, often satin lustre, from Greece and Morocco, notable for cabinet-sized habit and as a Ni arsenate collectible. - [Anorthite](https://earthwonders.com/species/anorthite): Anorthite: platelet to blocky crystals in colorless to pale gray hues, notable localities Madagascar, Italy, Japan, and appealing crystal habit for display. - [Anorthoclase](https://earthwonders.com/species/anorthoclase): Anorthoclase: glassy to pearly white to pale pink crystals, simple triclinic, notable from Japan and Mexico for gemmy prismatic forms - [Antimony](https://earthwonders.com/species/antimony): Antimony: metallic lustre, gray to silvery appearance, and native element specimens from notable localities in Spain, South Africa, USA, Germany, and Canada - [Antlerite](https://earthwonders.com/species/antlerite): Antlerite: copper sulfate hydroxide with an earthy to greenish hue, notable from Chile, Mexico, and the USA for its branching, antler-like crystal habit. - [Apatite](https://earthwonders.com/species/apatite): Apatite: hexagonal crystals, green to brown, notable localities in Pakistan, Brazil, Portugal, USA, Mexico offering vibrant habit and collectors’ appeal - [Apophyllite](https://earthwonders.com/species/apophyllite): Apophyllite: pale to colorless crystals with glassy luster, commonly forming rhombohedral to pyramidal habit from India, USA, Germany and more - [Aquamarine](https://earthwonders.com/species/aquamarine): Aquamarine: pale blue-green beryl crystals with vitreous luster, notable from Pakistan, Namibia, Brazil, USA, and China for clear, gem-quality facets. - [Aragonite](https://earthwonders.com/species/aragonite): Aragonite: at times delicate fan and needle aggregates, with bottle-green to golden hues and notable localities in Namibia, USA, Italy, UK, and Spain. - [Arfvedsonite](https://earthwonders.com/species/arfvedsonite): Arfvedsonite: dark green to black columnar crystals, notable from Malawi and India with lustrous prisms and glassy surfaces. - [Argentite](https://earthwonders.com/species/argentite): Argentite: metallic silver-gray Ag2S, cuboctahedral to dendritic habit, notable localities in Germany, Morocco, Mexico, Slovakia, and the Czech Republic. - [Argyrodite](https://earthwonders.com/species/argyrodite): Argyrodite: metallic silver-greys with a glassy luster, typically associated with complex aggregates and cluster habits, notable from Bolivia and Mexico. - [Armenite](https://earthwonders.com/species/armenite): Armenite: pale to colorless to white mineral with layered, lamellar habit; notable from Switzerland, appealing to collectors for its crystal forms and rarity. - [Arsendescloizite](https://earthwonders.com/species/arsendescloizite): Arsendescloizite: prismatic, brown-to-olive crystals from Mexico and Namibia, notable for arsenate-rich composition and metallic lustre. - [Arsenic](https://earthwonders.com/species/arsenic): Arsenic: gray metallic element with a distinct greasy luster and metallic habit; notable localities include Germany, Peru, Czech Republic, Japan, and the USA. - [Arseniosiderite](https://earthwonders.com/species/arseniosiderite): Arseniosiderite: pale orange to brown crystals with a vitreous luster from Mexico, France, Namibia, and the USA, notable for its niche collecting appeal. - [Arsenohauchecornite](https://earthwonders.com/species/arsenohauchecornite): Arsenohauchecornite: orange-brown to reddish-brown crystals, unusual arsenate-rich oxide from Canada, distinctive habit and collector appeal - [Arsenopyrite](https://earthwonders.com/species/arsenopyrite): Arsenopyrite: metallic sheen, prismatic to tabular crystals, and notable specimens from China, Portugal, and Peru provide classic collecting appeal. - [Arsentsumebite](https://earthwonders.com/species/arsentsumebite): Arsentsumebite: metallic dull gray to brown crystals with bladed habit from Namibia and USA, notable for lead, copper, arsenate chemistry - [Arthurite](https://earthwonders.com/species/arthurite): Arthurite: copper-iron arsenate hydrate, orange-brown crystals with tabular habit from notable localities such as Norway and the UK. - [Artinite](https://earthwonders.com/species/artinite): Artinite: pale green to colorless crystals with a layered habit, notable localities include the USA, collecting appeal from its rarity and translucent lustre. - [Asbecasite](https://earthwonders.com/species/asbecasite): Asbecasite: orange-brown to yellowish crystals, triclinic habit, notable Swiss localities and collector appeal for rare Na-Ca iron-aluminum silicate facets. - [Astrophyllite](https://earthwonders.com/species/astrophyllite): Astrophyllite: dark iridescent blades with fibrous habit from Russia, USA, Canada; notable localities and striking surface lustre appeal to collectors - [Atacamite](https://earthwonders.com/species/atacamite): Atacamite: vivid green to emerald crystals, often in sharp prisms or botryoidal habits from Chile, Peru, and Australia, prized for its color and crystal forms - [Augelite](https://earthwonders.com/species/augelite): Augelite, with its white to colorless crystals, notable localities in Peru, Bolivia, Canada, and the USA offer appealing collecting opportunities. - [Augite](https://earthwonders.com/species/augite): Augite: dark green to black pyroxene with stubby prismatic crystals, prominent in igneous rocks from USA, Brazil, Germany, Italy, and the Czech Republic - [Aurichalcite](https://earthwonders.com/species/aurichalcite): Aurichalcite: pale blue to greenish-blue microcrystals, notable from Mexico and the USA, appealing for its color and habit. - [Austinite](https://earthwonders.com/species/austinite): Austinite: orange to brownish crystals with prismatic habit and vitreous luster from Mexico, USA, Namibia, and Greece, prized for color and formation variety. - [Autunite](https://earthwonders.com/species/autunite): Autunite: a bright yellow, tabular to prismatic uranium phosphate mineral with radiant fluorescence, from notable locales in the USA, Brazil, and France - [Axinite](https://earthwonders.com/species/axinite): Axinite: distinctive trapezohedral crystals, deep brown to violet hues, notable from Russia and France for sharp, lustrous prisms - [Azurite](https://earthwonders.com/species/azurite): Azurite: deep-blue crystals and masses from USA, Namibia, Mexico, Morocco, China offering striking color and copper carbonate habit. - [Babingtonite](https://earthwonders.com/species/babingtonite): Babingtonite, distinctive green-black to brown crystals, notable localities in China, USA, and India showcase its prismatic habit and glassy luster. - [Baddeleyite](https://earthwonders.com/species/baddeleyite): Baddeleyite: orange-brown to brown crystals; usually imperfect, monoclinic habit; notable from Myanmar and South Africa for museum-quality specimens. - [Barite](https://earthwonders.com/species/barite): Barite: distinctive tabular crystals and stout fulsome habit; popular from Morocco to the USA with strong specimens from UK and China. - [Baryte](https://earthwonders.com/species/baryte): Baryte: classic tabular crystals, widely found in the USA, UK, and Morocco, notable for white to colorless to pale yellow prisms and chunky aggregates. - [Barytocalcite](https://earthwonders.com/species/barytocalcite): Barytocalcite: colorless to pale blue or pink crystals; tabular habits with nacreous to resinous luster; notable localities include the UK, India and Indonesia. - [Bastnasite](https://earthwonders.com/species/bastnasite): Bastnasite Ce/Nd/Y/REE carbonate fluoride crystals with a characteristic yellow to brown hue, notable from Pakistan, Australia, Canada, Madagascar, and Malawi. - [Baumhauerite](https://earthwonders.com/species/baumhauerite): Baumhauerite; metallic black to steel-gray mineral with a broad, complex crystal habit and lead–arsenic sulfide from notable localities such as Switzerland. - [Bavenite](https://earthwonders.com/species/bavenite): Bavenite, a calcium beryllo-silicate, shows pale beige to colorless crystals with a vitreous luster from notable localities in Italy and Pakistan - [Bayldonite](https://earthwonders.com/species/bayldonite): Bayldonite. Lead-copper arsenate hydroxide with a pale green to blue-green hue, forming tabular to prismatic crystals from Namibia, UK, and Congo. - [Becquerelite](https://earthwonders.com/species/becquerelite): Becquerelite: pale yellow to colorless crystals, uranium-rich with distinct acicular habit from DR Congo, collectible for its rarity and uranium青 hues - [Behierite](https://earthwonders.com/species/behierite): Behierite: pale to colorless to white prismatic crystals with a layered silicate habit and hydroxyl-rich formula, known from Madagascarite localities. - [Behoite](https://earthwonders.com/species/behoite): Behoite: colorless to pale blue-green crystals, often in veins; notable from Canada, appealing for its small, tabular crystals and rarity. - [Benitoite](https://earthwonders.com/species/benitoite): Benitoite: blue to violet crystals with glassy luster from San Benito County, notable for bright blue hues and fine single-crystal habits - [Berthierite](https://earthwonders.com/species/berthierite): Berthierite; metallic, subhedral to prismatic crystals with a steely luster, notable localities in Bolivia and Romania, popular for collectors. - [Bertrandite](https://earthwonders.com/species/bertrandite): Bertrandite: yellow to colorless crystals with a vitreous luster, notable from Brazil, Kazakhstan, USA, Austria, and China for stacked, prismatic habit. - [Beryl](https://earthwonders.com/species/beryl): Beryl: green, blue, or yellow crystals with hexagonal habit and vitreous lustre from classic localities in Pakistan, USA, Brazil, Namibia, and Afghanistan. - [Beryllonite](https://earthwonders.com/species/beryllonite): Beryllonite: pale to colorless to yellowish crystals, often tabular or prismatic, from notable localities in Brazil, Afghanistan, Pakistan, and the USA. - [Betafite](https://earthwonders.com/species/betafite): Betafite: yellowish-brown to black crystals with cubic to elongated habit, notable from Madagascar and Canada for complex oxide composition. - [Betekhtinite](https://earthwonders.com/species/betekhtinite): Betekhtinite: TiO₂ crystals with a metallic to adamantine lustre, notable for Kazakhstan specimens and compact, blocky habit. - [Beudantite](https://earthwonders.com/species/beudantite): Beudantite: botryoidal to tabular habit, earthy brown to yellow-brown color, with notable localities in Namibia, USA, Spain, Brazil, and Mexico. - [Bindheimite](https://earthwonders.com/species/bindheimite): Bindheimite: lead antimony oxide with a yellow-brown to orange-brown color, tabular to stubby crystals, notable from Austria, USA, Tunisia, and the UK - [Biotite](https://earthwonders.com/species/biotite): Biotite: dark mica with brown-to-black crystals, basal cleavage, and sheet-like habit from localities like the USA, Canada, Pakistan, Germany, and Norway. - [Bismuth](https://earthwonders.com/species/bismuth): Bismuth. Metallic, stair-stepped crystals with iridescent oxide sheen from Germany, Australia, Bolivia, China or the USA. - [Bismuthinite](https://earthwonders.com/species/bismuthinite): Bismuthinite: pale gray to steel-gray prismatic crystals with metallic luster, notable from China and Bolivia for sharp forms and classic specimen habit - [Bixbyite](https://earthwonders.com/species/bixbyite): Bixbyite Mn3+2O3 with deep black to reddish-brown cubes; famous from Utah and Mongolia, appealing for crystal form and dark lustre - [Blodite](https://earthwonders.com/species/blodite): Blodite, Na2Mg(SO4)2·4H2O, with colorless to white crystals and glassy lustre from Chilean localities, shows folded habits and hydration variability. - [Boleite](https://earthwonders.com/species/boleite): Boleite: distinctive blue-green cuboctahedrons from Mexico, notable localities in USA and Chile, prized for colorful crystals and complex matrix. - [Boltwoodite](https://earthwonders.com/species/boltwoodite): Boltwoodite: yellow-green to brownish crystals, often needle-like habits, from Namibia, notable for its uranyl silicate composition and delicate hydration. - [Boracite](https://earthwonders.com/species/boracite): Boracite: white to colorless crystals with prismatic habit and distinctive borate composition from notable localities in the UK, Germany, and Poland. - [Borax](https://earthwonders.com/species/borax): Borax – white, crystalline habit, onyx-like clusters from classic locales; widely collected for its distinctive needle-like crystals and historic mining sites. - [Borcarite](https://earthwonders.com/species/borcarite): Borcarite is a rare carbonate with calcium and magnesium, notable for its pale colors and transparent to translucent habits from China and Mexico - [Bornite](https://earthwonders.com/species/bornite): Bornite: cuprous iron sulfide with iridescent tarnish, massive metallic grains, notable from Kazakhstan, USA, and Mexico for collectors. - [Boulangerite](https://earthwonders.com/species/boulangerite): Boulangerite: needle-like gray to black metallic crystals, notable Romanian and Mexican localities, and classic botryoidal growth that appeals to collectors - [Bournonite](https://earthwonders.com/species/bournonite): Bournonite: metallic gray to silver, cubic to blocky crystals with deep cleavages; notable in Bolivia, Peru, Romania for cabinet-quality specimens. - [Brandtite](https://earthwonders.com/species/brandtite): Brandtite; pale green to colorless crystals, acicular habit and luster, notable from the USA and Europe for its arsenate composition. - [Brannerite](https://earthwonders.com/species/brannerite): Brannerite: UTi2O6; metallic brown to black tetragonal crystals with subhedral to prismatic habit and vitreous lustre, notable from Spain and France. - [Braunite](https://earthwonders.com/species/braunite): Braunite: deep brown to black prismatic crystals, commonly from South Africa and India, celebrated for dense, sparkly aggregates and distinctive habit. - [Brazilianite](https://earthwonders.com/species/brazilianite): Brazilianite: yellow-green to blue-green prismatic crystals, notable from Brazil, USA, and Canada, prized for vivid color and translucent to transparent habit. - [Brochantite](https://earthwonders.com/species/brochantite): Brochantite: vivid azure-green crystals, opaque to vitreous luster, from notable localities like USA, Mexico, and Morocco, prized for color and crystal habit - [Brookite](https://earthwonders.com/species/brookite): Brookite TiO2, transparent to brownish crystals with a metallic luster, notable localities include Pakistan, USA, and Switzerland. - [Brucite](https://earthwonders.com/species/brucite): Brucite, Mg(OH)2: colorless to white prisms with a pearly lustre, notable from Pakistan, South Africa, and the UK; attractive in crystals and microcrystals. - [Bustamite](https://earthwonders.com/species/bustamite): Bustamite: pale pink to brownish prisms, common in metamorphic skarns and garnet-rich assemblages, notable localities in Australia, South Africa, and the USA. - [Buttgenbachite](https://earthwonders.com/species/buttgenbachite): Buttgenbachite: blue-green copper nitrate hydroxide specimen with chloride, distinctive crystallization and notable localities in DR Congo and the USA - [Cabriite](https://earthwonders.com/species/cabriite): Cabriite (Ag,Cu)₁₋ₓ(Pd,Pt)ₓS—silver-to-gold metallic luster, tetrahedral habit, notable locally for rare sulfide minerals and collector appeal - [Cacoxenite](https://earthwonders.com/species/cacoxenite): Cacoxenite: orange-brown radiating needles, luminous in matrix, notable localities include USA, Ireland, Australia, Germany, and UK. - [Cafarsite](https://earthwonders.com/species/cafarsite): Cafarsite: blue-green crystals with vitreous luster from notable localities in Switzerland and Italy, appealing to collectors for its striking habit and rarity. - [Calaverite](https://earthwonders.com/species/calaverite): Calaverite AuTe2 features metallic luster and brassy to silvery gold color, notable gold-tinted crystals from classic localities like the USA and Mexico. - [Calcite](https://earthwonders.com/species/calcite): Calcite inland crystals: colorless to white to tinted hues, rhombohedral cleavage, notable localities in the USA, Mexico and China. - [Caledonite](https://earthwonders.com/species/caledonite): Caledonite—white to blue-green crystals with vitreous luster, notable from Namibia and Russia; attractive crystal habit and history of classic localities. - [Calomel](https://earthwonders.com/species/calomel): Calomel: mercury(I) chloride; pale white to colorless crystals, sometimes in nodular masses, notable localities in Spain, Germany, USA, and Serbia. - [Cancrinite](https://earthwonders.com/species/cancrinite): Cancrinite: yellow to orange to brown crystals with prismatic habit from notable localities, high-interest for collectors seeking well-formed habit. - [Canfieldite](https://earthwonders.com/species/canfieldite): Canfieldite: silvered-yellow metallic crystals, tarnished by iridescence, from Bolivia and Argentina with notable finds; compact habit suits cabinet displays. - [Carletonite](https://earthwonders.com/species/carletonite): Carletonite: orange pink radiating crystals, carbonate-rich formula, notable from Canada and admired for twinned habit and crystal gloss - [Carminite](https://earthwonders.com/species/carminite): Carminite is a lead iron arsenate showing deep red to brown hues, notable from Namibia and Mexico, with plumose to prismatic habits for collecting appeal. - [Carnallite](https://earthwonders.com/species/carnallite): Carnallite KMgCl3·6H2O; pale pink to colorless crystals, micro to tabular habit, notable localities in Germany and the USA. - [Carnotite](https://earthwonders.com/species/carnotite): Carnotite: yellow to greenish-yellow crystals, uranium-vanadate habit, notable localities in DR Congo and the USA for yellow euhedral crystals - [Carrollite](https://earthwonders.com/species/carrollite): Carrollite Cu(Co,Ni)2S4, a copper iron sulfide with a metallic lustre and dark gray to black color, notable for metallic crystals from DR Congo and Zambia. - [Cassiterite](https://earthwonders.com/species/cassiterite): Cassiterite: high-luster brown to black tetragonal crystals, often sharp prismatic habits from Bolivia, China, UK, Czech Republic, and Portugal. - [Catapleiite](https://earthwonders.com/species/catapleiite): Catapleiite: pale to colorless to lavender crystals; unmistakable prismatic habit and glassy luster from Canada and Denmark localities - [Cavansite](https://earthwonders.com/species/cavansite): Cavansite: blue-green radiating sprays, iconic from Poona (India) and other classic locales; notable for strong color and fibrous habit - [Celestine](https://earthwonders.com/species/celestine): Celestine: blue to pale blue, tabular crystals and euhedral habits from Madagascar and Mexico illuminate classic specimens. - [Celestite](https://earthwonders.com/species/celestite): Celestite: blue-tinged and clear crystals, often in tabular or prismatic forms, from notable locales in the USA, Austria, Mexico, Madagascar, and Italy - [Cerussite](https://earthwonders.com/species/cerussite): Cerussite: pearly white, diamond-cut crystals with superb brilliance, notable from Namibia and Morocco, prized by collectors for tabular and acicular habits - [Cervandonite](https://earthwonders.com/species/cervandonite): Cervandonite CaZn(PO4)(OH): colorless to pale yellow crystals, compact habit, notable from Switzerland and Italy for collecting appeal. - [Chabazite](https://earthwonders.com/species/chabazite): Chabazite: orange to colorless crystals, zeolite habit, notable localities in USA and beyond, appealing for vibrant crystal clusters and polycrystalline forms - [Chalcanthite](https://earthwonders.com/species/chalcanthite): Chalcanthite: vivid blue copper sulfate crystals, often emerald-blue encrustations, notable from Chile, Peru, and Namibia with classic blue sprays. - [Chalcedony](https://earthwonders.com/species/chalcedony): Chalcedony, a microcrystalline quartz variety, features waxy luster and pale, milky to blue-gray tones with banding and a smooth, waxy surface. - [Chalcoalumite](https://earthwonders.com/species/chalcoalumite): Chalcoalumite: needle-like crystals, dark coppery-green hue, notable for localities in the USA and UK; collecting appeal lies in its distinctive color and form. - [Chalcocite](https://earthwonders.com/species/chalcocite): Chalcocite: metallic copper sulfide with metallic luster, gray to black finish, notable for high-contrast copper-rich masses from classic localities - [Chalcophyllite](https://earthwonders.com/species/chalcophyllite): Chalcophyllite: vivid blue-green sprays with acicular crystals, notable from the UK and Chile, appealing for its rarity and striking habit. - [Chalcopyrite](https://earthwonders.com/species/chalcopyrite): Chalcopyrite: metallic brassy-yellow to golden, tetrahedral crystals with a iridescent tarnish, notable from Mexico and China, prized for color and crystal form - [Chalcosiderite](https://earthwonders.com/species/chalcosiderite): Chalcosiderite: copper-iron phosphate with hydroxide and water; distinctive blue-green crystals from notable localities and classic collector appeal. - [Chalcostibite](https://earthwonders.com/species/chalcostibite): Chalcostibite: vivid coppery hues with metallic luster, notable from Morocco and France, appealing for its compact crystals and antimony-rich composition - [Chalcotrichite](https://earthwonders.com/species/chalcotrichite): Chalcotrichite Kupric oxide with copper-rich hues, notable in Namibia, USA, and South Africa for vibrant copper-rich botryoidal clusters. - [Chambersite](https://earthwonders.com/species/chambersite): Chambersite: orange-brown to emerald-green crystals with vitreous to resinous luster from notable localities like the USA and Switzerland - [Charoite](https://earthwonders.com/species/charoite): Charoite: violet to purple fibrous paste, distinctive swirls from Sakha Republic localities, and striking figure among cabochons and polished specimens. - [Chervetite](https://earthwonders.com/species/chervetite): Chervetite Pb2(V2O7) with orange-brown crystals; notable for Gabon localities and its distinctive oxide-arsenide-oxide chemistry. - [Chevkinite](https://earthwonders.com/species/chevkinite): Chevkinite: dark to brownish-black aggregates with vitreous to resinous luster, notable from Pakistan and Madagascar for its complex silicate oxide structure - [Childrenite](https://earthwonders.com/species/childrenite): Childrenite: pale brown to colorless crystals with pointed habit and vitreous luster from Brazil, Afghanistan, and Bolivia, appealing for small, delicate forms - [Chkalovite](https://earthwonders.com/species/chkalovite): Chkalovite Na2BeSi2O6: colorless to pale yellow crystals, orthorhombic habit, notable for specimens from Russia and Denmark - [Chlorapatite](https://earthwonders.com/species/chlorapatite): Chlorapatite: olive-green to yellow-green crystals, typically in columnar to prismatic habits from Morocco and Norway, appealing for its hue and crystal form. - [Chlorargyrite](https://earthwonders.com/species/chlorargyrite): Chlorargyrite: silver-white AgCl crystals with metallic lustre from notable locales in Australia, USA, Spain, Chile, and Mexico. - [Chlorite](https://earthwonders.com/species/chlorite): Chlorite: green, micaceous to fibrous aggregates with pearly to vitreous luster from notable locales in Switzerland, USA, Pakistan, Brazil, and China. - [Chloritoid](https://earthwonders.com/species/chloritoid): Chloritoid. sharp, olive-green to brown crystals with a platy habit from Afghanistan, USA, Austria, or Pakistan; notable localities appeal to collectors. - [Chondrodite](https://earthwonders.com/species/chondrodite): Chondrodite: pale yellow to colorless crystals with rounded crystal habit and fluorine-rich composition from Myanmar, Vietnam, Afghanistan, USA, and Pakistan - [Chromite](https://earthwonders.com/species/chromite): Chromite: metallic black to brownish mineral, octahedral crystals and chrome-rich plumes from Pakistan and Zimbabwe forming striking specimens - [Chromium](https://earthwonders.com/species/chromium): Chromium: metallic gray to steel-gray crystals, often in massive or granular habits, notable localities in Nigeria and Pakistan offer appealing specimens. - [Chromium-bearing Clinochlore](https://earthwonders.com/species/chromium-bearing-clinochlore): Chromium-bearing Clinochlore: Cr-rich green to olive phyllosilicate with layered habit from Russia; rare, with high collector interest. - [Chrysoberyl](https://earthwonders.com/species/chrysoberyl): Chrysoberyl: characteristic olive-green to golden hues, typical crystals and cat's eye variants from notable localities like Sri Lanka, Brazil, Zimbabwe. - [Chrysocolla](https://earthwonders.com/species/chrysocolla): Chrysocolla: blue-green to turquoise coloration, often mixed with quartz or malachite; notable localities include DR Congo, USA, Peru, Namibia, Chile - [Chrysoprase](https://earthwonders.com/species/chrysoprase): Chrysoprase: green chalcedony variety with honey-green color, smooth waxy luster, often from Australian locales and nodules in serpentinite. - [Chrysotile](https://earthwonders.com/species/chrysotile): Chrysotile: needle-like asbestos mineral with silky luster, from high-profile localities in USA, Italy, Romania, and Spain - [Churchite](https://earthwonders.com/species/churchite): Churchite Dy,Sm,Gd,Nd)PO4 · 2H2O; vivid pale green to colorless crystals with a soft, vitreous luster from key localities in Germany and Namibia - [Cinnabar](https://earthwonders.com/species/cinnabar): Cinnabar: vivid red HgS crystals and masses from notable locales in China, Spain, Germany, Mexico, and the USA, prized for color and historic mining habit. - [Citrine](https://earthwonders.com/species/citrine): Citrine: orange-to-yellow quartz with transparent to translucent crystals from notable localities in Russia, Mexico, Brazil, USA, and South Africa. - [Clausthalite](https://earthwonders.com/species/clausthalite): Clausthalite PbSe, metallic to submetallic, with a dark gray to black coloration and often cubic habit from notable German and UK localities. - [Cleavelandite](https://earthwonders.com/species/cleavelandite): Cleavelandite Na(AlSi3O8) appears as slender, needle-like crystals with a white to colorless hue, notable from Pakistan, USA and Brazil localities. - [Clinochlore](https://earthwonders.com/species/clinochlore): Clinochlore: green to emerald-green sheets, pleochroic in thin section, notable from Italy and Türkiye for chrysotile-like habit and stacking. - [Clinoclase](https://earthwonders.com/species/clinoclase): Clinoclase: deep green to brownish crystals, often tabular or prismatic, from classic localities in the USA, UK and Germany. - [Clinohumite](https://earthwonders.com/species/clinohumite): Clinohumite: olive-green to colorless crystals, fibrous-to-tabular habit, notable Afghan and Myanmar localities for collectors - [Clinoptilolite](https://earthwonders.com/species/clinoptilolite): Clinoptilolite: colorful zeolite with trap vibrant habit, notable localities in India, Italy, and the USA, and classic collectors’ aggregates. - [Clinozoisite](https://earthwonders.com/species/clinozoisite): Clinozoisite: green to brown prismatic crystals, distinctive pleochroism, notable localities in Pakistan, USA, Austria, Mexico, and Peru. - [Clintonite](https://earthwonders.com/species/clintonite): Clintonite: pale to emerald-green to brown crystals, layered habit, common in Russia, USA, Vietnam; appealing for color zoning and crystal forms. - [Cobalt](https://earthwonders.com/species/cobalt): Cobalt: metallic gray-blue crystals, often on pyrite or other sulfides, notable localities in DR Congo, Morocco, Namibia, and Mexico. - [Cobaltite](https://earthwonders.com/species/cobaltite): Cobaltite: cobalt arsenide, metallic silver-gray to steel-gray crystals from Sweden, Canada, Chile and Argentina with reflective lustre and sharp habit. - [Cobaltocalcite](https://earthwonders.com/species/cobaltocalcite): Cobaltocalcite: cobalt-bearing calcite with bluish to greenish hues, prismatic habits, notable localities in DR Congo and Morocco for collectors - [Colemanite](https://earthwonders.com/species/colemanite): Colemanite: pale to colorless crystals with vitreous luster, notable from Turkey and the USA, prized for colorful prismatic forms and forming nodular masses. - [Collinsite](https://earthwonders.com/species/collinsite): Collinsite Ca2Mg(PO4)2·2H2O, with pale color and micro-crystalline habit from notable localities such as Canada, Russia, USA, Australia, and Brazil. - [Columbite](https://earthwonders.com/species/columbite): Columbite: metallic, black-grey Nb-rich mineral with tetragonal crystals from notable localities in the USA, Brazil, Madagascar, Afghanistan, and Australia. - [Conichalcite](https://earthwonders.com/species/conichalcite): Conichalcite: blue-green to green needles and platy masses from notable localities like Namibia, Mexico, and Greece show striking habit and collector appeal. - [Connellite](https://earthwonders.com/species/connellite): Connellite: blue-green to emerald-green crystals with botryoidal to tabular habit, sulfate-rich copper mineral from classic localities like the UK and USA. - [Copiapite](https://earthwonders.com/species/copiapite): Copiapite: pale yellow to brownish crystals with tabular habit, notable from Chile and Argentina for large, well-formed specimens. - [Copper](https://earthwonders.com/species/copper): Copper: a metallic copper mineral with reddish-brown to bronze color, notable for its metallic luster and malleable habit from diverse localities. - [Coquimbite](https://earthwonders.com/species/coquimbite) - [Cordierite](https://earthwonders.com/species/cordierite): Cordierite: blue-to-violet pleochroic crystals with fibrous vs. tabular habit, notable localities in US, Myanmar, and Madagascar offer high-quality specimens - [Cordylite](https://earthwonders.com/species/cordylite): Cordylite: banded carbonate fluoride with Na/Ca, Ba, La/Ce/Sr and a distinctive crystal habit from notable Canadian localities. - [Cornetite](https://earthwonders.com/species/cornetite): Cornetite Cu3(PO4)(OH)3, bright blue to green crystals with a fan-like habit and glassy lustre from notable localities in DR Congo, Chile, and Zambia. - [Coronadite](https://earthwonders.com/species/coronadite): Coronadite: pale brown to yellow-brown, massive to tabular crystals with a resinous to dull lustre, notable from Australia, Morocco, Namibia, UK, and USA - [Corundum](https://earthwonders.com/species/corundum): Corundum: vivid ruby and sapphire hues, hexagonal crystals, and notable localities in Myanmar, Sri Lanka, Madagascar, India, and Afghanistan. - [Cosalite](https://earthwonders.com/species/cosalite): Cosalite: orange-brown to reddish crystals with metallic luster, notable from Kazakhstan and Canada, prized for lustrous, blocky habit and localities. - [Covellite](https://earthwonders.com/species/covellite): Covellite: deep indigo to violet-blue crystals with metallic luster from notable localities in the USA, Serbia, and Italy. - [Crednerite](https://earthwonders.com/species/crednerite): Crednerite is a copper(I) oxide with a reddish-brown to copper color, notable for small, angular crystals and solid habit from classic localities like the UK. - [Creedite](https://earthwonders.com/species/creedite): Creedite: orange to lemon-yellow crystals with vitreous luster, notable from Mexico and Kazakhstan, prized for bright color and compact habit - [Crichtonite](https://earthwonders.com/species/crichtonite): Crichtonite: a Sr-rich titanomanganese ferrite with colorful, granular to massive habit and notable specimens from France and Switzerland - [Cristobalite](https://earthwonders.com/species/cristobalite): Cristobalite — white to colorless crystals or massive forms, notable localities in the USA and India, collecting appeal in translucence and diagnostic sparkle. - [Crocoite](https://earthwonders.com/species/crocoite): Crocoite: bright orange crystals with a tabular to prismatic habit, notable from Australia and Russia, prized for bold color and dramatic cleavage faces. - [Cronstedtite](https://earthwonders.com/species/cronstedtite): Cronstedtite: metallic to dark grey foliated crystals, common in iron-rich nodules and among late-precipitation hydrothermal assemblages. - [Cryolite](https://earthwonders.com/species/cryolite): Cryolite: pale, sugary crystals with a glassy luster from Greenland and Denmark, notable for rare cabinet specimens and distinctive tabular habit. - [Cubanite](https://earthwonders.com/species/cubanite): Cubanite: metallic copper-iron sulfide with a black to brass luster, from notable localities in Canada, Brazil, Russia, South Africa, and the USA. - [Cumengeite](https://earthwonders.com/species/cumengeite): Cumengeite: pale blue to greenish crystals with a vitreous luster from Mexico and the USA, prized for its complex Pb–Cu–chloride composition and compact habit. - [Cummingtonite](https://earthwonders.com/species/cummingtonite): Cummingtonite: olive-green to brown elongated crystals, hornblende group mineral from Brazil with fibrous and prismatic habits - [Cuprite](https://earthwonders.com/species/cuprite): Cuprite: deep red crystals with metallic lustre from classic localities like the USA and Russia, prized for color and translucent gem-like habit. - [Cuproadamite](https://earthwonders.com/species/cuproadamite): Cuproadamite: a Zn-rich arsenate with Cu substituting in the structure, distinctive orange-brown to olive hues, notable from Namibia and Mexico for collectors. - [Cuprosklodowskite](https://earthwonders.com/species/cuprosklodowskite): Cuprosklodowskite: copper-uranyl silicate with blue-green crystals, notable from DR Congo localities, prized for vivid color and translucent luster. - [Cyanotrichite](https://earthwonders.com/species/cyanotrichite): Cyanotrichite: blue-green acicular crystals, vivid aggregation, notable finds from the USA and China that appeal to micro-mineral collectors. - [Cylindrite](https://earthwonders.com/species/cylindrite): Cylindrite: dark, lustrous silvery-gray mineral from Bolivia and Argentina with complex Pb-Sn-Fe-Sb sulfide composition and blocky to tabular habit. - [Dadsonite](https://earthwonders.com/species/dadsonite): Dadsonite: pale yellow to brownish mineral with lead-antimony sulfide-salt composition, notable from France for its habit and rarity. - [Danburite](https://earthwonders.com/species/danburite): Danburite: clear to pale pink to colorless crystals with a vitreous luster from notable localities like Mexico, Russia, Myanmar, USA, and Madagascar. - [Datolite](https://earthwonders.com/species/datolite): Datolite: pale green to colorless crystals, commonly zoned with vitreous luster from classic localities such as the USA and Mexico. - [Davidite](https://earthwonders.com/species/davidite): Davidite: pink to brownish brownish crystals, rare oxide with complex La/Ce/Ca and Y/U components from DR Congo, Australia, Kazakhstan, North Macedonia, Zambia. - [Demantoid](https://earthwonders.com/species/demantoid): Demantoid, rich green garnet: emerald-like color, brilliant dodecahedral crystals, notable from Madagascar and Iran, prized for clarity and luster - [Descloizite](https://earthwonders.com/species/descloizite): Descloizite: yellow-brown to orange-brown crystals, distinctive zoned habit from Namibia and Portugal, prized for colorful groups and classic localities. - [Devilline](https://earthwonders.com/species/devilline): Devilline: blue-green prismatic to tabular crystals, notable from Slovakia, Namibia, and the USA, collecting appeal for vibrant color and sulfate mineral habit. - [Diaboleite](https://earthwonders.com/species/diaboleite): Diaboleite is a lead copper chloro-oxide with distinctive blue-green crystals, found in classic old mine locales in the USA and UK. - [Diamond](https://earthwonders.com/species/diamond): Diamond: colorless to yellow brown crystals, octahedral habit, brilliant facets from carbon, notable localities in USA, Russia, South Africa, Australia, Canada. - [Diaphorite](https://earthwonders.com/species/diaphorite): Diaphorite: silver-gray to metallic luster, prismatic crystals and complex sulfosalt composition from Bolivia and Germany. - [Diaspore](https://earthwonders.com/species/diaspore): Diaspore, orange to colorless crystals, notable Turkish and U.S. localities, prized for gem-quality specimens and strong needle-to-bladed habit. - [Digenite](https://earthwonders.com/species/digenite): Digenite: metallic Cu9S5, with a coppery bronze sheen and cubic crystal forms from notable localities like the USA, DR Congo, and Namibia. - [Diopside](https://earthwonders.com/species/diopside): Diopside; green to deep green crystals,: notable localities include Tanzania, Canada and Pakistan, strong collecting appeal for crystal habit and lustre - [Dioptase](https://earthwonders.com/species/dioptase): Dioptase: emerald-green to deep green crystals, notable Namibia and Republic of the Congo localities, striking lustre and crystal habit for cabinet displays - [Djurleite](https://earthwonders.com/species/djurleite): Djurleite: copper sulfide with a metallic luster, earthy to bronze hues, and radiating crystal patterns from Morocco, China, USA, Kazakhstan, and Italy - [Dolomite](https://earthwonders.com/species/dolomite): Dolomite: pink to colorless crystals with rhombohedral habit and glassy lustre from notable localities in USA and Namibia - [Domeykite](https://earthwonders.com/species/domeykite): Domeykite Cu3As appears as metallic gray to reddish-brown crystals, with solid, often blocky habit from notable localities. - [Donnayite](https://earthwonders.com/species/donnayite): Donnayite shows colorless to white crystals, distinctive acicular habit, with notable occurrences in Canada and Australia. - [Dravite](https://earthwonders.com/species/dravite): Dravite: green to brown Tourmaline with vitreous luster, notable from Tanzania and Brazil, appealing to color and crystal habit collectors. - [Dufrenite](https://earthwonders.com/species/dufrenite): Dufrenite: emerald-green to olive-brown prismatic habit with a vitreous to silky lustre from phosphate-rich localities such as classic worldwide mines. - [Duftite](https://earthwonders.com/species/duftite): Duftite: pale yellow to brownish crystals, often tabular, with a resinous to vitreous luster from notable localities like Namibia and the USA. - [Dumortierite](https://earthwonders.com/species/dumortierite): Dumortierite: purple to blue-hued, prismatic crystals with vitreous luster from Brazil and the USA, prized for color zoning and cabinet-size specimens. - [Dundasite](https://earthwonders.com/species/dundasite): Dundasite: pale green to colorless crystals, common in Australia, with carbonate-rich habit and hydrated lead aluminum hydroxide from classic deposits. - [Dyscrasite](https://earthwonders.com/species/dyscrasite): Dyscrasite Ag 3 Sb: metallic silver-grey crystals with a bright lustre, notable from Germany, Czech Republic, Morocco, Australia, and Bolivia for collectors. - [Edenite](https://earthwonders.com/species/edenite): Edenite: pale to colorless to greenish crystals, notable Canada and UK localities, appealing prismatic habit for display and study - [Edingtonite](https://earthwonders.com/species/edingtonite): Edingtonite: colorless to white prismatic crystals with vitreous luster from Canada and Sweden, notable for watery content and transparency. - [Elbaite](https://earthwonders.com/species/elbaite): Elbaite, tourmaline variety with green to pink hues and transparent to crystals from notable localities like Brazil and the USA. - [Electrum](https://earthwonders.com/species/electrum): Electrum: natural alloy of gold and silver, with yellowish to pale tones, notable locality specimens from USA and Mexico for collectors. - [Elpidite](https://earthwonders.com/species/elpidite): Elpidite Na2ZrSi6O15·3H2O, a rare hydrated zircon silicate, known for pristine colorless to pale yellow crystals and glassy luster from notable localities. - [Emerald](https://earthwonders.com/species/emerald): Emerald: deep green beryl with rich color, notable from Colombia and Brazil, admired for crystal habit and notable localities. - [Emmonsite](https://earthwonders.com/species/emmonsite): Emmonsite; orange to yellow-orange crystals, te inclusion crystals, notable Mexican and U.S. localities, appealing for its orange hue and vitreous luster - [Enargite](https://earthwonders.com/species/enargite): Enargite: deep blue-black to grayish with coppery luster, occurs in massive to prismatic aggregates from notable localities in Peru, USA, and Namibia - [Enstatite](https://earthwonders.com/species/enstatite): Enstatite: olive-green to brownish crystals, prismatic habit, with notable specimens from Myanmar and Tanzania that attract careful collectors. - [Eosphorite](https://earthwonders.com/species/eosphorite): Eosphorite: needle-like crystals with pale green to colorless hues, from Brazil, Pakistan, USA, Canada, and Afghanistan, prized for habit and localities. - [Epididymite](https://earthwonders.com/species/epididymite): Epididymite: colorless to pale yellow crystals, platy to tabular habit, associated with zeolites in diamond-bearing or alkaline pegmatite environments. - [Epidote](https://earthwonders.com/species/epidote): Epidote: green to pistachio crystals with prismatic habit from USA, Mali, Pakistan, Austria, and Peru; notable localities and collecting appeal highlighted. - [Epistilbite](https://earthwonders.com/species/epistilbite): Epistilbite: pink to colorless blades and tabular crystals, translucent luster, from notable localities like India and Japan, appealing for habit and hydration. - [Erionite](https://earthwonders.com/species/erionite): Erionite: needle-like crystals, distinctive fibrous habit, notable localities in Oregon and Turkey with striking parallitic forms. - [Erythrite](https://earthwonders.com/species/erythrite): Erythrite: vivid pink to rose-red, often tabular or prismatic crystals, notable localities include Morocco and Mexico, prized for color and crystal habit - [Ettringite](https://earthwonders.com/species/ettringite): Ettringite: colorless to pale white crystals with platy to tabular habit, notable from South Africa, Germany, and Israel for specimen quality - [Euchroite](https://earthwonders.com/species/euchroite): Euchroite: vivid blue-green crystals, rare arsenate with cupric composition, notable from Slovakia and the USA, prized for color and crisp habit. - [Euclase](https://earthwonders.com/species/euclase): Euclase: pale to emerald-green to colorless prismatic crystals, notable from Brazil, Zimbabwe, and Colombia for clean habit and glassy lustre - [Eudialyte](https://earthwonders.com/species/eudialyte): Eudialyte reveals vivid red to pinkish crystals, distinctive zoned pink to red hues, and rare, complex groupings from classic Greenland and Russian localities. - [Eudidymite](https://earthwonders.com/species/eudidymite): Eudidymite a pristine, colorless to pale yellow feldspathoid-like mineral with layered habit and vitreous luster from Malawi, Canada, Denmark, and Norway - [Euxenite](https://earthwonders.com/species/euxenite): Euxenite: dark brown to black crystals with a resinous lustre, notable Madagascan, Norwegian, Malawian, and U.S. specimens. - [Fairfieldite](https://earthwonders.com/species/fairfieldite): Fairfieldite: pale yellow to colorless crystals, monoclinic, from notable localities in the USA, moderate collecting appeal for rare phosphate minerals - [Fayalite](https://earthwonders.com/species/fayalite): Fayalite: olive-brown to yellow-brown crystals with a metallic luster, from classic localities in the USA and Europe, prized for crystal size and clarity - [Feldspar](https://earthwonders.com/species/feldspar): Feldspar: feldspar crystals show earthy hues, prismatic habit, and widespread localities in Pakistan, Namibia, Brazil, USA, and Afghanistan. - [Ferberite](https://earthwonders.com/species/ferberite): Ferberite: dark metallic screws of FeWO4 with a deep black to brownish lustre, notable crystal forms and localities in Portugal, China, Bolivia and Kazakhstan - [Flint](https://earthwonders.com/species/flint): Flint: dark, opaque silica nodule with conchoidal fracture from USA localities; classic chert-like nodules offer rugged texture and pale to dark hues. - [Florencite](https://earthwonders.com/species/florencite): Florencite: pale green to colorless crystals, rare phosphates from Brazil, forming in layered phosphates and hydrous minerals, prized for distinctive luster - [Fluorapatite](https://earthwonders.com/species/fluorapatite): Fluorapatite: pale to colorless to yellow-green crystals, prismatic habit, vitreous luster, notable localities in Portugal, Brazil, USA, Pakistan, Mexico. - [Fluor-Buergerite](https://earthwonders.com/species/fluor-buergerite): Fluor-Buergerite: distinctive tourmaline with fluorine-rich composition, unique color and locality in Mexico, appealing to niche collectors - [Fluorite](https://earthwonders.com/species/fluorite): Fluorite, a halide mineral offering color zoning and cubic crystals; notable localities include USA, China, UK, Namibia, and Mexico. - [Foitite](https://earthwonders.com/species/foitite): Foitite Tourmaline: green to dark hues, prismatic crystals from Namibia, USA, Afghanistan offer classic tourmaline habit and stout luster - [Forsterite](https://earthwonders.com/species/forsterite): Forsterite: olive-green to colorless crystals, widely found in Pakistan, Myanmar, and Norway, prized for classic olivine habit and strong crystal clarity. - [Francevillite](https://earthwonders.com/species/francevillite): Francevillite: distinctive uranium-thorium silicate crystals, usually orange-brown to yellow-brown, from Gabon with notable uraninite associations - [Franckeite](https://earthwonders.com/species/franckeite): Franckeite in Bolivia and Argentina shows layered, lead- and tin-rich sulfide with brassy to dark gray lustre and complex micaceous habit. - [Franklinite](https://earthwonders.com/species/franklinite): Franklinite appears as black to dark brown radiating crystals with a metallic luster, notable from ultramafic hosts in the USA and Germany. - [Freibergite](https://earthwonders.com/species/freibergite): Freibergite (Ag,Cu,Fe)12(Sb,As)4S13; metallic luster, dark gray to black crystals, notable in Romania, Bolivia, China, Germany, and the USA - [Fuchsite](https://earthwonders.com/species/fuchsite): Fuchsite, K(Al,Cr)3Si3O10(OH)2, with vibrant green chromium-rich mica lustre and sheet-like habit from Madagascar, Pakistan, Eswatini, and Russia. - [Gadolinite](https://earthwonders.com/species/gadolinite): Gadolinite: dark to black prismatic crystals with a greenish to brown tint, notable localities in Norway and Sweden, collectors prize rarity and crystal habit. - [Gahnite](https://earthwonders.com/species/gahnite): Gahnite ZnAl2O4; octahedral zinc aluminum spinel with deep blue-green to emerald hues, notable from classic localities in the USA and Australia - [Galena](https://earthwonders.com/species/galena): Galena: metallic gray cubic crystals, lead sulfide with a metallic lustre, notable from the USA and Mexico for octahedral habits and large specimen potential - [Galkhaite](https://earthwonders.com/species/galkhaite): Galkhaite Zn₄(Fe)S₈, a metallic-sulfide with a brass-gold luster and cubic to granular habit, from notable localities including the USA. - [Garnet](https://earthwonders.com/species/garnet): Garnet: deep red to reddish brown crystals, well-formed dodecahedra from Tanzania, USA, Pakistan, Madagascar, and Canada offer classic collecting appeal. - [Gartrellite](https://earthwonders.com/species/gartrellite): Gartrellite: lustrous, emerald-green crystals with copper-iron arsenate, notable from Namibia for its rich habit and distinctive color. - [Gasparite](https://earthwonders.com/species/gasparite): Gasparite Ce(AsO4) with yellow-green hues, noted for pale crystals from Switzerland and Italy, appealing to collectors of rare arsenates. - [Gatelite](https://earthwonders.com/species/gatelite): Gatelite: orange-brown to dark brown crystals with prismatic habit from rare, peralkaline pegmatites and associated with curious silicate or oxide minerals. - [Gaudefroyite](https://earthwonders.com/species/gaudefroyite): Gaudefroyite: olive-brown to dark brown crystals with complex carbonate-oxide composition from notable localities in South Africa and Morocco. - [Gaylussite](https://earthwonders.com/species/gaylussite): Gaylussite: attractive, colorless to white, tabular crystals from Egypt, USA, and Kenya with hydrated carbonate composition and distinctive habit. - [Genthelvite](https://earthwonders.com/species/genthelvite): Genthelvite: pink to brownish-red crystals with elongated habit, notable localities in China, Pakistan and Canada, prized for color and crystal form - [Geocronite](https://earthwonders.com/species/geocronite): Geocronite: metallic lead-rich sulfosalt with stibnite-like facets, notable specimens from Peru and Italy and collectible lustre in banded crystals - [Gerhardtite](https://earthwonders.com/species/gerhardtite): Gerhardtite Cu2(NO3)(OH)3 with deep blue to greenish hue, tabular to acicular crystals from notable localities in DR Congo and the USA. - [Gersdorffite](https://earthwonders.com/species/gersdorffite): Gersdorffite NiAsS with metallic luster and cubic crystals; notable from Morocco, Germany, Russia, and the USA for rich, gemmy specimens. - [Gibbsite](https://earthwonders.com/species/gibbsite): Gibbsite: white to colorless nodules and platelets, common in lateritic bauxites and tropical soils, notable from China, Australia, USA, Greece. - [Glauberite](https://earthwonders.com/species/glauberite): Glauberite: white to colorless crystals with tabular habit and glassy luster from sulfate-rich environments in the USA and Australia - [Glaucodot](https://earthwonders.com/species/glaucodot): Glaucodot: dark gray to black metallic prismatic crystals, often with a bronze luster, notable from Sweden and Argentina for collectors. - [Gmelinite](https://earthwonders.com/species/gmelinite): Gmelinite: glassy, colorless to white crystals with a hexagonal habit and notable hydrous zeolite form, sourced from Canada, Kazakhstan, the USA, and Australia - [Goethite](https://earthwonders.com/species/goethite): Goethite offers earthy yellow-brown needles and botryoidal formations from notable localities like USA, Mexico, Morocco, UK and Namibia. - [Gold](https://earthwonders.com/species/gold): Gold is a metallic mineral with a distinctive yellow hue, occurring as nuggets and grains with a metallic luster, found in placer deposits and vein systems. - [Goosecreekite](https://earthwonders.com/species/goosecreekite): Goosecreekite Ca[Al 2 Si 6 O 16] · 5H2O with pale hydration, layered crystals from India and Afghanistan, appealing for collectors of hydrated silicate minerals - [Gormanite](https://earthwonders.com/species/gormanite): Gormanite: purple-green, fibrous to prismatic crystals from Brazil and Canada, notable for its lustrous needles and collectible localities. - [Goshenite](https://earthwonders.com/species/goshenite): Goshenite: colorless beryl from Namibia, Brazil, USA, Pakistan, Myanmar with glassy prismatic crystals and hexagonal habit. - [Graemite](https://earthwonders.com/species/graemite): Graemite Cu[TeO3] · H2O—blue-green micro crystals with a vitreous to subadamantine lustre, notable from certain USA localities and prized for color and habit. - [Grandidierite](https://earthwonders.com/species/grandidierite): Grandidierite: distinctive bluish-green to green crystals from Madagascar, laminated lustre, and prismatic habit offering bright color play for collectors - [Graphite](https://earthwonders.com/species/graphite): Graphite: metallic luster, hexagonal crystals and platy masses from Tanzania, Canada, USA, Sri Lanka, and China offer classic graphite specimens - [Gratonite](https://earthwonders.com/species/gratonite): Gratonite Pb9As4S15 — metallic, lead-gray crystals from Australia, Peru, Bolivia, Spain; notable for sharp prismatic forms and bright lustre - [Greenockite](https://earthwonders.com/species/greenockite): Greenockite: cadmium sulfide with distinctive yellow to orange crystals, notable localities in the USA, Bolivia, UK, Germany, and Namibia. - [Grossular](https://earthwonders.com/species/grossular): Grossular: emerald-green to yellow-green crystals from Cherokee, Vesuvian regions and pervasive plagioclase-rich pockets provide striking color and lustre. - [Groutite](https://earthwonders.com/species/groutite): Groutite MnO(OH) with pinkish-brown to brown blades, notable localities in the USA, Canada, Germany, and South Africa; appealing to specimen collectors. - [Gypsum](https://earthwonders.com/species/gypsum): Gypsum: colorless to white crystals, satin spar to alabaster varieties, notable locales include Mexico, USA, Canada, Peru, and Australia - [Gyrolite](https://earthwonders.com/species/gyrolite): Gyrolite: pale to colorless to white, with a fibrous to radiating habit and vitreous luster, notable from India, France, UK, and USA for delicate aggregates - [Hackmanite](https://earthwonders.com/species/hackmanite): Hackmanite: saffron-to-rose hues in dimorphic feldspathoid hues, notable for late-saturation fluorescence from metamict opacity, Afghan and Canadian finds - [Halite](https://earthwonders.com/species/halite): Halite: colorless to white cubic crystals, earthy to glassy luster, notable localities in USA, Poland, Germany, Egypt, and Peru. - [Halloysite](https://earthwonders.com/species/halloysite) - [Hambergite](https://earthwonders.com/species/hambergite): Hambergite: pale to colorless to yellowish color crystals, habit in prismatic aggregates, notable localities in USA, Pakistan, Myanmar, Tajikistan, Afghanistan. - [Hanksite](https://earthwonders.com/species/hanksite): Hanksite: pale yellow to colorless crystals from the USA, notable for its sulfate-rich, chlorinated carbonate composition and rare, saline habit. - [Hardystonite](https://earthwonders.com/species/hardystonite): Hardystonite: distinctive violet-green crystals with a vitreous luster, notable localities in the USA, appealing for its unique color and crystal habit - [Harmotome](https://earthwonders.com/species/harmotome): Harmotome: yellow to brownish brown, bipyramidal crystals, platy to prismatic habit, notable from Germany, UK, USA, Bulgaria, Czech Republic - [Hausmannite](https://earthwonders.com/species/hausmannite): Hausmannite: dark brown to black octahedral crystals, notable from South Africa and Sweden, prized for metallic lustre and bold crystal forms - [Haüyne](https://earthwonders.com/species/hauyne): Haüyne: blue to violet triclinic feldspathoid with sulfur-rich content, notable from Afghanistan, Germany, Italy, France for large, gemmy specimens - [Hedenbergite](https://earthwonders.com/species/hedenbergite): Hedenbergite: pale to deep green-brown prismatic crystals with vitreous luster from notable localities in Greece, Sweden, China, Russia, and Australia. - [Hedyphane](https://earthwonders.com/species/hedyphane): Hedyphane Ca 2 Pb 3 (AsO 4 ) 3 Cl, with blocky to prismatic habit and pale yellow to amber color, notable from Namibia and the USA for collectors. - [Heliodor](https://earthwonders.com/species/heliodor): Heliodor: pale to vibrant yellow-green beryl, prismatic crystals from Namibia and Brazil, prized for clean termination and sparkling luster - [Helvite](https://earthwonders.com/species/helvite): Helvite: pink-orange crystals with square Be-Si silicate framework, notable from China and Brazil, sought by collectors for size and color zoning - [Hematite](https://earthwonders.com/species/hematite): Hematite: metallic luster, steel-gray to black blades and iridescent speculars from notable locales like the UK, Brazil, USA, China, and South Africa - [Hemimorphite](https://earthwonders.com/species/hemimorphite): Hemimorphite: blue to azure crystals and translucent botryoidal habits from Mexico, China, USA and beyond with notable locality variety and bright lustre. - [Henmilite](https://earthwonders.com/species/henmilite): Henmilite BaCa(SO₄)₂ · 2H₂O, pale yellow to colorless crystals with a secondary habit, notable specimens from Japan, appealing for its rarity and clarity - [Hercynite](https://earthwonders.com/species/hercynite): Hercynite: metallic luster spinel-like oxide featuring iron-rich composition, notable Italian and Sri Lankan localities for distinctive crystals - [Herderite](https://earthwonders.com/species/herderite): Herderite CaBe(PO4)F, yellow to green crystals with glassy luster from Brazil, Pakistan, USA, Namibia, Afghanistan; notable for slender prismatic habit. - [Hessite](https://earthwonders.com/species/hessite): Hessite: silvered teardrop crystals of Ag2Te, notable for bright metallic luster and metallic grey colors from Romania, USA, and Canada - [Hessonite](https://earthwonders.com/species/hessonite): Hessonite: orange-brown grossular-like garnet with distictive cinnamon tones, from Sri Lanka, India, and Madagascar, prized for color zoning and crystal form - [Heulandite](https://earthwonders.com/species/heulandite): Heulandite: translucent to pearly crystals with tabular habit and pale pink to colorless hues, notable localities in India, USA, Iceland, Canada, Australia. - [Hibonite](https://earthwonders.com/species/hibonite): Hibonite: a pale to deep yellow-brown mineral from Madagascar and Myanmar, notable for its hexagonal habit and strong lustre in crustal rock specimens. - [Hiddenite](https://earthwonders.com/species/hiddenite): Hiddenite, a green variety of spodumene, displays sugary emerald to yellow-green crystals and notable localities in the USA and Afghanistan. - [Hingganite](https://earthwonders.com/species/hingganite): Hingganite (Ce, REE)2(●,Fe2+)Be2[SiO4]2(OH)2 with Ce-rich pink to brownish hues and Be-rich silicate habit from Pakistan, notable for rare REE-rich specimens. - [Hinsdalite](https://earthwonders.com/species/hinsdalite): Hinsdalite: pale yellow to colorless crystals with phosphate-sulfate composition from Australia, notable for tabular habit and expressive crystals. - [Hodgkinsonite](https://earthwonders.com/species/hodgkinsonite): Hodgkinsonite Mn2+Zn2(SiO4)(OH)2 features a pale green to brownish green hue, a prismatic to blocky habit, and notable examples from select localities. - [Hopeite](https://earthwonders.com/species/hopeite): Hopeite: blue-green crystals, distinctive prismatic habit, notable from Zambia localities; popular for tabular, lustrous prisms and micro specimens. - [Hornblende](https://earthwonders.com/species/hornblende): Hornblende: dark green to black hornblende crystals with elongated prismatic habit and vitreous luster from Norway, Iran, Germany, USA, Myanmar - [Hubnerite](https://earthwonders.com/species/hubnerite): Hubnerite: MnWO4 with deep brown to black crystals, tungsten-rich habit, notable from tungsten-rich localities offering strong collecting appeal - [Hübnerite](https://earthwonders.com/species/hubnerite): Hübnerite: brown to black mineral with brownish to reddish-brown hues, notable specimens from Peru, USA, and Romania, prized for color and crystal form - [Huebnerite](https://earthwonders.com/species/huebnerite): Huebnerite MnWO4: deep red-brown crystals with metallic luster, from Peru and the USA, prized for sharp termination and bright aggregation. - [Hulsite](https://earthwonders.com/species/hulsite): Hulsite: bronze-brown to yellow-brown prismatic crystals; notable localities include the USA and Czech Republic; valued for crystal form and borate context. - [Hureaulite](https://earthwonders.com/species/hureaulite): Hureaulite: pink-to-orange prismatic crystals, often in fan or tabular habit from Brazil, USA, Portugal, Afghanistan, Germany; notable collecting localities. - [Hutchinsonite](https://earthwonders.com/species/hutchinsonite): Hutchinsonite: metallic grey to black, Tl/Pb arsenosulfide with twinned crystals from Peru and Switzerland, prized for its high lead-thallium content and rarity - [Hyalophane](https://earthwonders.com/species/hyalophane): Hyalophane: clear to pale yellow-green crystals, common in alkali feldspar localities, notable from Bosnia and Herzegovina for its translucent prismatic habit. - [Hydroboracite](https://earthwonders.com/species/hydroboracite): Hydroboracite: colorless to pale yellow crystals, micro to chunky masses, notable localities in Germany, USA and Kazakhstan offer collector-worthy specimens. - [Hydrocerussite](https://earthwonders.com/species/hydrocerussite): Hydrocerussite: pale to colorless to gray-green crystals, commonly botryoidal or prismatic, notable localities in Namibia and the UK offer classic specimens. - [Hydromagnesite](https://earthwonders.com/species/hydromagnesite): Hydromagnesite: colorless to white crystals with platy to tabular habit from Afghanistan and Pakistan, notable USA specimens, appealing to primary collectors. - [Hydroxylapatite](https://earthwonders.com/species/hydroxylapatite): Hydroxylapatite: needle-like to prismatic crystals, often colorless to pale yellow or brown, notable localities in Norway, Brazil, Mexico, Namibia, and the USA. - [Hydroxylbastnasite](https://earthwonders.com/species/hydroxylbastnasite): Hydroxylbastnasite Ce(CO3)(OH) bright green to brownish crystals, notable for carbonate-oxide habit and localities in fluorite-bearing veins. - [Hydroxylbastnäsite](https://earthwonders.com/species/hydroxylbastnasite): Hydroxylbastnäsite: rare Ce-bearing carbonate; pale brown to pinkish hues, translucent to transparent crystals, notable for Ce-rich localities - [Hydrozincite](https://earthwonders.com/species/hydrozincite): Hydrozincite: pink to white crystals, unique botryoidal habit, notable from Mexico, Namibia, USA, Ireland, and China; popular for color and crystal form. - [Hypersthene](https://earthwonders.com/species/hypersthene): Hypersthene: dark, hornblende-like prismatic crystals with metallic to vitreous luster from classic basaltic hosts and notable localities. - [Idocrase](https://earthwonders.com/species/idocrase): Idocrase: olive-green to brown-green crystals, prismatic habit, notable from USA, Canada, Mali with distinctive lustre and gemmy to mosaic aggregates. - [Iimoriite](https://earthwonders.com/species/iimoriite): Iimoriite: ultrarare silicate carbonate with Y in a prismatic habit and a glassy to glistening lustre from notable localities that entice careful collecting - [Ilmenite](https://earthwonders.com/species/ilmenite): Ilmenite: black to steel-gray crystals, common igneous accessory mineral, notable localities in Morocco, Namibia, Norway, Canada, and Pakistan. - [Ilvaite](https://earthwonders.com/species/ilvaite): Ilvaite: dark brown to black prismatic crystals with glassy lustre from China, Russia, and the USA, plus notable Greek and Italian locales. - [Indicolite](https://earthwonders.com/species/indicolite): Indicolite Tourmaline: blue-green to blue, columnar to prismatic crystals from Brazil, Afghanistan, USA, Pakistan, and Namibia with strong collecting appeal. - [Inesite](https://earthwonders.com/species/inesite): Inesite, pale pink to white with resinous luster, notable from South Africa and China for its delicate crystals and rare hydroxy water content. - [Iodargyrite](https://earthwonders.com/species/iodargyrite): Iodargyrite: metallic grey to brownish crystals of AgI, often with a resinous to greasy luster, notable from Australia and Russia for small, bright aggregates - [Iron](https://earthwonders.com/species/iron): Iron: metallic luster, gray-silvery color, common crystalline forms; notable localities include Switzerland, China, USA, Russia, and Denmark - [Iron-Nickel Meteorite](https://earthwonders.com/species/iron-nickel-meteorite): Iron-Nickel Meteorite Rare iron-nickel metal with Widmanstätten patterns, notable meteorite finds from chondritic bodies, high collecting appeal - [Ixiolite](https://earthwonders.com/species/ixiolite): Ixiolite: metallic grey to black oxide with Ta, Nb, Mn inclusions; notable from Madagascar and USA, admired for luster and compact habit. - [Jacobsite](https://earthwonders.com/species/jacobsite): Jacobsite MnFe₂O₄, a reddish-brown to brick-red oxide, notable from Africa and Sweden for sharp octahedral crystals and magnetic lustre. - [Jade](https://earthwonders.com/species/jade): Jade Na(Al,Fe3+ )Si2 O6; green to emerald hues, fibrous or granular masses, notable from Myanmar, Italy, USA, Canada; prized for color and texture. - [Jadeite](https://earthwonders.com/species/jadeite): Jadeite: green to emerald hues, compact crystals and jade-green massifs from Myanmar and US localities; prized for translucence and classic jadeite textures. - [Jamesonite](https://earthwonders.com/species/jamesonite): Jamesonite: metallic gray to black tetragonal-sprayed crystals, platy to prismatic habits, notable from Romania, Bolivia, and Mexico for collecting interest. - [Jarosite](https://earthwonders.com/species/jarosite): Jarosite: brown to yellow-brown crystals, often tabular or prismatic, with earthy to vitreous luster from key localities like USA and Spain. - [Jasper](https://earthwonders.com/species/jasper): Jasper: a brown to red-brown variety of microcrystalline quartz with opaque appearance, notable localities in USA, Mexico, and China. - [Jeremejevite](https://earthwonders.com/species/jeremejevite): Jeremejevite: pale to colorless to yellowish crystals, notable from Namibia and Myanmar, prized for sharp prismatic form and museum-quality specimens - [Joaquinite](https://earthwonders.com/species/joaquinite): Joaquinite: yellow to brown crystals with complex Na–Ba–Ce–Fe–Ti composition, notable from USA localities and distinctive hollow or rod-like habits. - [Jordanite](https://earthwonders.com/species/jordanite): Jordanite: shows dark metallic luster, platy to prismatic habit, and notable localities in Switzerland, Peru, and Italy. - [Jouravskite](https://earthwonders.com/species/jouravskite): Jouravskite: pale brown to yellow-brown crystals with blue-green hues, notable from South Africa, collecting appeal for rare carbonate-sulfate compositions. - [Julgoldite](https://earthwonders.com/species/julgoldite): Julgoldite: pale yellow to brownish crystals with glassy luster from India and the UK, notable for layered silicate structure and blue-green to yellow hues. - [Kainosite](https://earthwonders.com/species/kainosite): Kainosite: orange-brown to pink, prismatic crystals with vitreous luster from notable localities like Austria and Germany; prized for color and crystal habit - [Kaolinite](https://earthwonders.com/species/kaolinite): Kaolinite: white to off-white platelets with a persistent earthy luster from classic localities in the UK, Australia, Bolivia, Germany, and Brazil. - [Karibibite](https://earthwonders.com/species/karibibite): Karibibite: deep brown to black, complex oxide-arsenate with Fe3+ and As5+ components, notable localities in Morocco, Chile and Brazil. - [Kermesite](https://earthwonders.com/species/kermesite): Kermesite, Sb2S2O, with yellow-brown to reddish tones and resinous luster, notable from Slovakia, Germany, and China for distinctive aggregates. - [Kesterite](https://earthwonders.com/species/kesterite): Kesterite: copper zinc tin sulfide; distinctive golden-brassy to brownish hues, tetrahedral crystals, notable from China for specimen quality. - [Kidwellite](https://earthwonders.com/species/kidwellite): Kidwellite: pale blue to greenish crystals with phosphate-rich habit, notable from Sweden and the USA for delicate, needle-like formations. - [Kieserite](https://earthwonders.com/species/kieserite): Kieserite: a gypsum-like magnesium sulfate mineral from Germany, notable for colorless to white crystals and fibrous to granular habit. - [Kinoite](https://earthwonders.com/species/kinoite): Kinoite: orange to brown, hydrated copper calcium silicate; notable for aqueous content and distinctive habit from US localities. - [Kolwezite](https://earthwonders.com/species/kolwezite): Kolwezite: copper cobalt carbonate hydroxide with a greenish hue, notable from DR Congo for fine botryoidal and tabular habits. - [Kosnarite](https://earthwonders.com/species/kosnarite): Kosnarite: orange to pinkish crystals, rare phosphate from Brazil, notable for zirconium-rich composition and distinctive prismatic habit. - [Kottigite](https://earthwonders.com/species/kottigite): Kottigite: blue-green crystals of Zn3(AsO4)2·8H2O, notable from Mexico for its distinctive habit and rarity among arsenate minerals. - [Köttigite](https://earthwonders.com/species/kottigite): Köttigite is a Zn3(AsO4)2·8H2O, notable for its pale blue to light green crystals and acicular habit from notable Mexico and Germany localities. - [Kovdorskite](https://earthwonders.com/species/kovdorskite): Kovdorskite shows colorless to white crystals with a glassy to vitreous lustre, notable for its phosphate-rich composition and occurrence in Russia. - [Krausite](https://earthwonders.com/species/krausite) - [Ktenasite](https://earthwonders.com/species/ktenasite): KtenasiteZnCu4(SO4)2(OH)6·6H2O is a blue-green sulfate mineral with a layered, prismatic habit and a lustrous surface, notable from USA localities. - [Kulanite](https://earthwonders.com/species/kulanite): Kulanite, Ba(Fe2+ ,Mn2+ ,Mg)2 (Al,Fe3+)2 (PO4)3 (OH)3, with deep brown to olive hues and robust prismatic habit, notable from Canada collecting sites. - [Kunzite](https://earthwonders.com/species/kunzite): Kunzite: pink to lilac spodumene from Afghanistan, USA, Brazil, Pakistan, Tanzania, known for pleochroism and large, gemmy crystals. - [Kupletskite](https://earthwonders.com/species/kupletskite): Kupletskite — orange-brown to yellow-green crystals with complex Mn/Fe-rich chains from Canada and Ukraine, prized for its unique composition and crystal habit. - [Kurnakovite](https://earthwonders.com/species/kurnakovite): Kurnakovite: colorless to white, acicular or platy crystals with a vitreous to silky luster, notable from the USA for occasional hydrate-rich specimens - [Kutnohorite](https://earthwonders.com/species/kutnohorite): Kutnohorite: orange-brown to brown rhombohedral crystals, notable localities in South Africa, Romania, and China, prized for its color and zoned aggregates. - [Kyanite](https://earthwonders.com/species/kyanite): Kyanite: blue to blue‑gray blades with prismatic habit from notable localities such as Brazil, Tanzania, the USA, Switzerland, and Kenya - [Labradorite](https://earthwonders.com/species/labradorite): Labradorite: iridescent schiller in concentric plagioclase; labradorite from Madagascar and Myanmar shows vivid color play. - [Labuntsovite](https://earthwonders.com/species/labuntsovite): Labuntsovite appears as small, prismatic to tabular crystals with a lustrous to vitreous surface, notable from Russia and Canada. - [Lanarkite](https://earthwonders.com/species/lanarkite): Lanarkite: prismatic to tabular crystals with pale to deep violet-gray hues; notable from the UK and sought for its distinctive habit and iridescent lustre. - [Larderellite](https://earthwonders.com/species/larderellite): Larderellite: ammonium borate hydroxide mineral featuring a pale composition with delicate habit, notable Afghan localities and collecting appeal. - [Larimar](https://earthwonders.com/species/larimar): Larimar, a blue to blue-green pectolite with white matrix, iconic to the Dominican Republic, prized for its comforting hue and unique cabochon specimens. - [Laueite](https://earthwonders.com/species/laueite): Laueite: manganese-iron phosphate with water, notable for its lustrous crystals and German localities that attract mineral collectors - [Laumontite](https://earthwonders.com/species/laumontite): Laumontite: transparent to translucent, pale color hues with tabular prismatic crystals from notable locales in the USA, India, UK, China, and Russia. - [Laurentthomasite](https://earthwonders.com/species/laurentthomasite): Laurentthomasite: pale colorless to white crystals, associated with Madagascar localities, collectors seek its unique calcium silicate hydrate habit. - [Lazulite](https://earthwonders.com/species/lazulite): Lazulite: blue to violet prismatic crystals with a glassy luster from classic localities in Canada, the USA, Pakistan, Austria, and Afghanistan. - [Lazurite](https://earthwonders.com/species/lazurite): Lazurite: deep blue crystals and masses, notable Afghan and Italian specimens, striking color zoning and crystal habit for display and study. - [Lead](https://earthwonders.com/species/lead): Lead Pb, notable for metallic gray lustre and high density, with notable localities in Sweden, USA, Australia, and China. - [Leadhillite](https://earthwonders.com/species/leadhillite): Leadhillite: pale blue to colorless crystals with tabular habit from classic localities like Namibia, Italy, and Brazil. - [Legrandite](https://earthwonders.com/species/legrandite): Legrandite: yellow-green crystalline habit with resinous to silky luster, notable localities in Mexico and Namibia appeal to collectors - [Leifite](https://earthwonders.com/species/leifite): Leifite: pale to colorless crystals with glassy lustre from Canada, rare framework silicate fluoride minerals with complex Be–Al–Si composition - [Leiteite](https://earthwonders.com/species/leiteite): Leiteite: vivid orange to yellowish crystals, arsenate zinc mineral from Namibia, notable for its sharp habit and rare crystal pairs. - [Lepidolite](https://earthwonders.com/species/lepidolite): Lepidolite: pink-to-lavender mica with pearly luster, notable from Brazil and USA for crowded crystal clusters and slabby varieties. - [Leucite](https://earthwonders.com/species/leucite): Leucite: yellow to colorless crystals with glassy luster, notable locales in Italy and Türkiye, collecting appeal from zoned habit and feldspathoid chemistry - [Leucophanite](https://earthwonders.com/species/leucophanite): Leucophanite: pleochroic, pale-yellow to colorless crystals from Canada, forming in pegmatites; attractive transparency and glassy luster for display and study. - [Libethenite](https://earthwonders.com/species/libethenite): Libethenite appears as emerald-green to olive-green crystals with deep lustre, notable from Zambia and the DRC for vibrant cupric phosphate specimens. - [Liddicoatite](https://earthwonders.com/species/liddicoatite): Liddicoatite, tourmaline variety, displays vibrant colours and striated crystals, from Madagascar and Vietnam to Brazil and Switzerland. - [Likasite](https://earthwonders.com/species/likasite): Likasite: copper nitrate hydroxide hydrate with blue-green crystals, notable from Kazakhstan, collecting appeal for vibrant color and crystalline habit. - [Linarite](https://earthwonders.com/species/linarite): Linarite: deep blue prismatic crystals, notable from the USA and other classic localities, prized for intense color and layered habit. - [Linnaeite](https://earthwonders.com/species/linnaeite): Linnaeite: cobalt sulfide with mixed valence, metallic luster and copper-gray to black crystals from Germany, DR Congo, Uganda, and the USA. - [Liroconite](https://earthwonders.com/species/liroconite): Liroconite: vivid blue-green crystals, micro to macro habit, notable from UK localities, prized for color and crystal form - [Lithiophilite](https://earthwonders.com/species/lithiophilite): Lithiophilite: yellow-brown to amber, translucent to opaque crystals with a vitreous to resinous luster from classic lithium manganese phosphate localities. - [Lollingite](https://earthwonders.com/species/lollingite): Lollingite FeAs2, metallic mineral with gray-silver appearance and micaceous habit from China, Morocco, Austria, Germany, and Australia. - [Londonite](https://earthwonders.com/species/londonite): Londonite: distinctive deep-colored complex borosilicate with Cs, K, Rb in a cubic framework from Madagascar localities. - [Lorandite](https://earthwonders.com/species/lorandite): Lorandite: lustrous black-tawny TlAsS2 mineral from diverse localities, notable for its tin-rich arsenic sulfide habit and historical germanium-rich specimens. - [Lorenzenite](https://earthwonders.com/species/lorenzenite): Lorenzenite — blue-grey to black subhedral crystals, notable Russian and Canadian localities, collecting appeal for its sharp, lustrous tetrahedral habit - [Luanheite](https://earthwonders.com/species/luanheite): Luanheite Ag 3 Hg, a metallic alloy mineral with bright silver-gray color and high luster from notable localities in Chile and Russia - [Ludlamite](https://earthwonders.com/species/ludlamite): Ludlamite: blue-green to pale green hydrated phosphate; from Bolivia, Mexico, USA, Brazil, UK with well-formed crystals and vibrant habit. - [Ludlockite](https://earthwonders.com/species/ludlockite): Ludlockite: a dark, metallic-leaning arsenite with iron and lead, notable from Namibia for its compact habit and lustrous finish. - [Macphersonite](https://earthwonders.com/species/macphersonite): Macphersonite: lead carbonate sulfate hydroxide with a pale coloration, notable occurrences in Namibia and the UK, prized for its rarity and crystal habit. - [Magnesite](https://earthwonders.com/species/magnesite): Magnesite: white to brownish color, tabular crystals and hexagonal habits, notable localities include Brazil, Austria, Italy, Norway, and China. - [Magnetite](https://earthwonders.com/species/magnetite): Magnetite: metallic lustre oxide with black to brownish-black crystals, notable localities in USA and Argentina, highly valued for magnetic habit and size - [Malachite](https://earthwonders.com/species/malachite): Malachite: vibrant green bands, botryoidal to tabular habits, notable specimens from Congo, Namibia, and Mexico offer strong collecting appeal. - [Manganese](https://earthwonders.com/species/manganese): Manganese: metallic grey mineral with steel luster, notable localities in USA, China and Russia, collectible for its chemical simplicity and historical use. - [Manganite](https://earthwonders.com/species/manganite): Manganite: deep green to black platy crystals, notable from Germany, South Africa, USA, Mexico, and Canada; eye-catching specimens for habit and luster. - [Manganoneptunite](https://earthwonders.com/species/manganoneptunite): Manganoneptunite: distinctive black to brownish crystals, rare from Canada and Russia, notable for complex intergrowths and sharp termination. - [Marcasite](https://earthwonders.com/species/marcasite): Marcasite: metallic pale-brass to bronze crystals with conical and tabular habits, notable in European and North American localities - [Marialite](https://earthwonders.com/species/marialite): Marialite: clear to pale pink to lavender crystals, distinctive fluorite-like twinning, from notable localities for collecting appeal. - [Matlockite](https://earthwonders.com/species/matlockite): Matlockite: pearly to resinous luster, tabular to blocky crystals, often pale yellow to grayish with fluorine and chloride-rich composition from UK localities - [Melanite](https://earthwonders.com/species/melanite): Melanite: dark melanite crystals with iron-rich black appearance from Mali, Mexico, USA, Chile, Germany, prized for sharp habit and luster - [Melanophlogite](https://earthwonders.com/species/melanophlogite): Melanophlogite: yellow to colorless crystals with a rounded, glassy habit and high transparency from Italian, Romanian, and Canadian localities. - [Melanterite](https://earthwonders.com/species/melanterite): Melanterite: colorless to pale blue-green crystals, hydrous iron(II) sulfate from Peru, UK, or USA localities, notable for abundance and collecting appeal - [Meneghinite](https://earthwonders.com/species/meneghinite): Meneghinite: yellowish-brown to black, metallic, cubic to irregular crystals from Italy, notable for rich formlines and crystal habit, sought by collectors. - [Mercury](https://earthwonders.com/species/mercury): Mercury is a metallic element known for its high density, silvery-blue appearance, and liquid drop-like habit at room temperature. - [Mesolite](https://earthwonders.com/species/mesolite): Mesolite: fine needle-like crystals, fibrous aggregates, notable from India and Tanzania for delicate lathes and colorless to pale blue hues. - [Meta-autunite](https://earthwonders.com/species/meta-autunite): Meta-autunite: vivid yellow-green crystals, tabular to needle-like habit, with uranyl mineral associations from notable localities in the USA and Brazil. - [Meta-torbernite](https://earthwonders.com/species/meta-torbernite): Meta-torbernite: blue-green uranyl phosphate with hydration, notable specimens from Zambia and distinctive tabular crystals - [Meta-uranocircite](https://earthwonders.com/species/meta-uranocircite): Meta-uranocircite: pale to yellow-green crystals, octahedral to prismatic habits, from notable uranophane-bearing localities and classic phosphate-rich veins. - [Miargyrite](https://earthwonders.com/species/miargyrite): Miargyrite: a silver antimony sulfide with metallic lustre and black to gray hues, notable from Germany, Peru, USA, Bolivia, and the Czech Republic. - [Mica](https://earthwonders.com/species/mica): Mica: thin, flexible sheets with pearly luster from Pakistan, Afghanistan, China, Brazil, and Tanzania; well-known for sheeted habit and varied varieties. - [Microcline](https://earthwonders.com/species/microcline): Microcline, color- and habit-rich feldspar with a pale to deep pink, orange, or yellow hue in clear crystals from notable localities like the USA and Pakistan - [Microlite](https://earthwonders.com/species/microlite): Microlite: small, opaque brown to black crystals with a vitreous to submetallic luster from Afghanistan, Brazil, Pakistan, USA, Mozambique - [Milarite](https://earthwonders.com/species/milarite): Milarite: pale olive-green to colorless crystals with a vitreous to silky lustre from classic localities in Brazil, Mexico, and Switzerland. - [Milky quartz](https://earthwonders.com/species/milky-quartz): Milky quartz: milky-white to opaque quartz, characteristic hazy appearance, widely collected from USA, Pakistan, Brazil, Canada, and DR Congo - [Millerite](https://earthwonders.com/species/millerite): Millerite NiS, metallic nickel sulfide with a brassy to silver-gray hue, compact to prismatic crystals, notable from classic localities in the USA and Europe. - [Mimetite](https://earthwonders.com/species/mimetite): Mimetite: yellow to orange botryoidal crystals, notable Mexican and Namibian localities, collectible small barite-like habit and lustre. - [Minium](https://earthwonders.com/species/minium): Minium: red-orange to brownish-red oxide mineral, notable for small tabular crystals from notable localities like the USA and Iran. - [Mixite](https://earthwonders.com/species/mixite): Mixite: vivid green to yellow-green crystals, radial and botryoidal habits, notable localities in the Czech Republic, Germany, Greece, and the USA. - [Moldavite](https://earthwonders.com/species/moldavite): Moldavite glass crafted by tektite formation from meteorite impact; green chipped pieces, iconic Czech localities, high collecting appeal - [Molybdenite](https://earthwonders.com/species/molybdenite): Molybdenite: metallic gray, hexagonal platelets, notable in Australia, USA, Canada and Chile; appealing for its sheet-like habit and mineral sheen. - [Monazite](https://earthwonders.com/species/monazite): Monazite: brown to reddish-brown prismatic crystals, common in placer deposits and pegmatites from Bolivia, Norway, Brazil, Switzerland, Madagascar - [Montebrasite](https://earthwonders.com/species/montebrasite): Montebrasite: pale yellow to colorless crystals, often in aplite-pegmatite pockets; notable localities include Brazil and the USA for well-formed crystals. - [Monteregianite](https://earthwonders.com/species/monteregianite): Monteregianite: colorless to pale yellow, platy monoclinic microcrystals from Canada, notable for fine habit and hydration. - [Montmorillonite](https://earthwonders.com/species/montmorillonite): Montmorillonite: earthy clay with platy white to tan appearance, notable for swelling properties and widespread secondary deposits in USA and Brazil - [Moonstone](https://earthwonders.com/species/moonstone): Moonstone with adularescence; pleasing blue sheen, typical monoclinic feldspar, notable localities in Mexico, Myanmar, and Norway. - [Mordenite](https://earthwonders.com/species/mordenite): Mordenite: a zeolite often forming colorless to pale yellow crystals with a distinctive habit and abundant hydration, notable from India and Madagascar