Telírio mine, Minas Gerais — premier specimen locality yielding yellow-green brazilianite on white albite, with rare phosphates; highly prized by collectors.
Key facts
Telírio is one of the defining specimen pegmatites of the Linópolis area in eastern Minas Gerais, a small mine with an outsized reputation because it turned brazilianite from a rare phosphate name into a mineral most serious collectors can picture at once: lustrous yellow-green prisms, often doubly terminated, standing on clean white feldspar. The mine lies north of Linópolis in the municipality of Divino das Laranjeiras, within the Galiléia–Mendes Pimentel pegmatite field of the Eastern Brazilian Pegmatite Province. Its pegmatites are part of the Araçuaí Orogen setting and are hosted chiefly by schists of the Rio Doce Group, where modestly thick, zoned granitic pegmatites were worked intermittently for industrial and gem minerals before their phosphate pockets became famous.
What separates Telírio from the older Córrego Frio brazilianite locality nearby is not simply quality, but style. Córrego Frio is the classic historical reference; Telírio is the great modern specimen mine. Its best brazilianites are bright, prismatic, wedge-terminated, and sculptural rather than merely blocky. Fine pieces may show a single upright crystal with transparent yellow-green interiors, a side-hung doubly terminated companion, snowy albite or blocky microcline, a flash of muscovite, or pale smoky quartz. The mine also matters for far more than brazilianite: montebrasite, beryllonite, fluorapatite, eosphorite, hydroxylherderite, moraesite, zanazziite, and other rare phosphates make it a research locality as well as a collector locality.
Regional View
Country View
For cabinet collectors, the Telírio look is immediately recognizable: saturated lemon-yellow to greenish-yellow brazilianite with glossy faces, perched on white albite or microcline, commonly with some degree of internal milkiness but, in the finest examples, with enough transparency to glow. Smaller specimens often have the best sharpness and lack the bruising seen on larger pocket pieces; the great cabinet specimens are prized when they combine size, an undamaged display face, and genuine three-dimensional balance.
Photo: Wikimedia Commons
Photo: Wikimedia Commons
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The Telírio mine is located about 7 km north of Linópolis, near the municipal boundary with Mendes Pimentel, roughly 500 m west of the MG-417 road that links Linópolis and Mendes Pimentel. The site recorded by the Brazilian Geological Survey is at approximately 18°40'41" S, 41°28'04" W, in a rural private-mining setting. The mine area has been described as including several workings or lavras, notably Lavra do Duquinha, associated with the Córrego Frio pegmatite, Lavra Joaquim Gabriel, Lavra do Elias, associated with the Telírio pegmatite, and Lavra do João Modesto.
Geologically, Telírio belongs to the Galiléia–Mendes Pimentel field of the Eastern Brazilian Pegmatite Province. The pegmatites are small, zoned, tabular to lenticular bodies hosted mainly by mica- and biotite-rich schists of the São Tomé Formation, Rio Doce Group, with regional context in the Neoproterozoic–Cambrian Araçuaí Orogen and related Rio Doce magmatic arc. Published descriptions emphasize modest physical scale rather than giant-pocket pegmatite grandeur: bodies only a few meters thick, with a maximum thickness around 7 m in some descriptions, a narrow discontinuous quartz core, and intermediate zones of microcline, albite, quartz, muscovite, beryl, almandine, cassiterite, and montebrasite.
The ore-and-specimen story is concentrated in replacement bodies near the quartz core and in small semi-spherical cavities locally called “ximboquinhas.” These cavities and replacement masses are where the phosphate assemblage becomes collectible: brazilianite, montebrasite, beryllonite, fluorapatite, eosphorite, hydroxylherderite, moraesite, zanazziite, frondelite, phosphosiderite, vivianite, and related alteration products occur with feldspar, quartz, mica, and accessory oxide minerals. The paragenesis is important because brazilianite at Telírio is not simply a primary pocket mineral; studies of Minas Gerais occurrences interpret brazilianite as a secondary product of montebrasite alteration during an early hydrothermal stage.
The mine’s first modern fame is tied to Telírio Gomes Pacheco, who discovered the brazilianite-bearing pegmatite around 1970, apparently while working industrial beryl. It was initially a small, practical operation rather than a specimen mine in the museum sense, and early descriptions refer to an open pit with lower adits. After a cave-in in 1972, the mine was abandoned for a period, then returned to prominence when reopened in the mid-1990s. Production has remained intermittent, driven by pocket discovery, safety, land and claim access, and the mineral market. When pockets produced heavily, especially when tens of kilograms of brazilianite entered the trade, prices softened and work could pause until demand justified renewed effort.
The best-documented specimen production peak for brazilianite was in the 1990s and early 2000s, with an especially important find in December 2006. That pocket yielded yellow-green brazilianites longer than 5 cm associated with white albite, large smoky quartz crystals, and hydroxylherderite crystals to about 5 cm. Most Telírio brazilianite crystals are much smaller, commonly under 2 cm, so crystals in the 4–6 cm range on attractive matrix are already serious specimens; crystals reported at more than 10 cm are exceptional. Modern market examples also show a wide spread in quality, from modest miniatures with single yellow-green crystals on albite to major cabinet specimens carrying large upright crystals and doubly terminated companions.
Collecting access today should be regarded as private-mine access, not casual public collecting. The mine is on private rural property, has had intermittent active mining, and includes underground workings and old adits. Any visit requires permission from the landowner or mineral-right holder, current information on claim status, and sensible mine-safety judgment. Loose specimen material reaches the market through Brazilian dealers, international show circuits, older collections, and dealer archives; fresh production is sporadic rather than continuous.
Brazilianite is the signature Telírio species and the reason the mine is known to collectors worldwide: bright yellow to greenish-yellow monoclinic crystals, commonly prismatic rather than stubby, with wedge-shaped terminations, occasional doubly terminated individuals, and sculptural clusters on white albite or microcline, more rarely with pale smoky quartz, muscovite, beryllonite, fluorapatite, eosphorite, zanazziite, or hydroxylherderite. Ordinary Telírio crystals are often under 2 cm and may be cloudy, bruised, contacted, or internally “crazed”; good specimens have sharp lustrous faces, rich greenish-yellow color, clean terminations, and attractive white feldspar contrast; excellent specimens add partial transparency, freestanding presentation, and crystals in the 3–6 cm range, while the legendary pieces from major pockets include crystals over 5 cm and rare individuals reported beyond 10 cm.
At Telírio, albite is both a pegmatite mineral and the classic presentation stage for brazilianite, occurring as white to snow-white crystalline masses, blocky feldspar surfaces, and locally bladed cleavelandite-like aggregates associated with brazilianite, montebrasite, beryllonite, fluorapatite, muscovite, and quartz. Albite rarely drives value here by itself; its collector importance is architectural. The best albite-bearing specimens offer a clean, bright, undamaged matrix that throws the yellow-green phosphate color forward, while poorer pieces have dull, iron-stained, broken, or visually crowded feldspar that leaves even good brazilianite crystals looking cramped.
Telírio montebrasite is a serious species-level prize, not merely an associated phosphate, and the mine has been singled out in spectroscopic and mineralogical literature for producing some of the world’s finest montebrasite specimens. It occurs in miarolitic cavities and replacement zones, typically as pale yellow, honey-yellow, slightly greenish, colorless, or near-colorless triclinic crystals, commonly with albite, fluorapatite, brazilianite, beryllonite, eosphorite, and siderite. The most desirable pieces show lustrous transparent to translucent crystals, sometimes to several centimeters, on bright albite; unattractive examples are massive, cleaved, etched, contacted, or sold under the old trade habit of “amblygonite” without analytical support.
Beryllonite from Telírio is a rare beryllium phosphate found in the same phosphate-rich pocket environment as brazilianite and montebrasite, with documented specimens including colorless to white transparent crystals, contact twins, cyclic or sixling twins, and small combination pieces with albite, fluorapatite, montebrasite, quartz, or brazilianite. Most collector pieces are miniature to thumbnail scale, often with crystals measured in millimeters to a few centimeters; the finest show glassy, well-defined, undamaged crystals with enough transparency to separate them visually from white feldspar. Because colorless beryllonite can be visually quiet on albite, good labels, analytic confidence, and clean crystal form matter more here than size alone.
Quartz at Telírio is part of the pegmatite framework and the pocket assemblage, appearing as clear to pale smoky crystals and as larger smoky quartz associated with some of the best brazilianite finds. It is not the locality’s headline species, but it can make a specimen: pale smoky quartz adds depth and a darker optical anchor to yellow-green brazilianite and white albite, while small colorless quartz on the reverse of matrix pieces may document pocket context. Collectors should favor quartz that is complete, lustrous, and compositionally integrated with the phosphate display rather than broken quartz masses that simply add weight.
Other documented Telírio minerals include microcline, muscovite, beryl, almandine, cassiterite, columbite-tantalite group minerals, fluorapatite, hydroxylherderite, eosphorite, childrenite-series material, frondelite, bermanite, heterosite, rockbridgeite, strengite, phosphosiderite, phosphuranylite, vivianite, uraninite, pyrite, galena, moraesite, greifensteinite, and zanazziite. Brazilianite itself is a type-locality mineral of the nearby Córrego Frio pegmatite, which is treated in Brazilian Geological Survey documentation as one of the bodies within the broader Telírio mine area; for specimen labels, however, collectors should keep Córrego Frio and Telírio/Elias/Telírio claim material distinct when that distinction is known. Purpurite and amblygonite have appeared historically on labels and in literature for this area, but modern locality databases flag those reports as erroneous or problematic for the Telírio claim, so analytically confirmed montebrasite is the safer name for Telírio “amblygonite-montebrasite” specimens.
Telírio specimens are widely represented in collections, but high-end examples are genuinely scarce. Ordinary miniatures with a single brazilianite crystal on albite remain obtainable, especially from older Brazilian dealer stock and collection dispersals; large, balanced, highly lustrous matrix specimens with transparent crystals are not common and command a strong premium. The market periodically sees small waves of material, but the mine is not a steady commercial source, and much of the best production has already passed into private collections.
Condition is the decisive issue. Brazilianite has good cleavage and many Telírio crystals show edge bruising, contacted backs, small termination nicks, internal cloudiness, or crazing. Matrix specimens should be examined for repaired crystals, glued contacts at the albite interface, and overly convenient crystal placement, especially when a large crystal projects dramatically from feldspar. That said, many Telírio crystals naturally grew in improbable-looking jumbled positions, so suspicion should be balanced with close inspection rather than assumed fakery. Look for continuous matrix contact, matching surface patina, consistent pocket staining, and unbroken feldspar growth around the crystal base.
Mislabelling is common in several forms. Older labels may say “Linópolis,” “Divino das Laranjeiras,” “Mendes Pimentel,” “Conselheiro Pena,” “Doce Valley,” “Marcel Telirio mine,” “Telirio Claim,” “Elias Lopes claim,” or simply “Brazil.” Some labels also blur Telírio with Córrego Frio, which is nearby and historically central to brazilianite but produces a somewhat different style. For brazilianite, the Telírio look tends toward prismatic crystals with wedge terminations and pale to bright yellow-green color, often on white albite or microcline; Córrego Frio material is more often discussed as the historic type-locality style. For montebrasite, old “amblygonite” labels should be treated cautiously because the two members of the series are visually indistinguishable and analytical work has shown the Telírio material commonly belongs to montebrasite.
Beryllonite needs particular care because colorless crystals on white albite can be confused with quartz, feldspar, or other pale phosphates on casual inspection. The best beryllonite specimens should be bought from sources that provide strong locality and species confidence, ideally with analytical history or provenance. Fluorapatite, hydroxylherderite, eosphorite, and zanazziite associations add mineralogical interest, but not every small accessory warrants a label claim unless it is visually clear or analytically supported.
Fluorescence is not a major selling point for Telírio brazilianite; at least one documented collector observation reports no long-wave or short-wave ultraviolet response for a Telírio brazilianite specimen. Handling should focus instead on cleavage, edge protection, and light exposure. Brazilianite color has been studied in terms of radiation-related color centers and thermal stability, so specimens should be displayed away from heat and harsh prolonged direct sunlight as a matter of conservative care, even though Telírio pieces are routinely displayed in normal collection lighting.
The Telírio story begins in the practical world of eastern Minas Gerais pegmatite mining, not in a museum case. Around 1970, Telírio Gomes Pacheco was reportedly working industrial beryl when he noticed the yellow-green phosphate crystals that would carry his name through the collecting world. At first, the operation was small: an open cut only about 20 m long, with lower adits driven into the pegmatite. Then, in 1972, a cave-in stopped the work. The mine went quiet, and for years Telírio was more of a local promise than an international specimen locality.
When the mine returned in the mid-1990s, the timing was perfect. Collectors already knew brazilianite from Córrego Frio and other Linópolis-area pegmatites, but Telírio gave the species a more theatrical habit: upright prisms, wedge terminations, bright yellow-green color, and clusters that looked assembled for display yet were natural pocket growth. The mine’s small cavities, the miners’ “ximboquinhas,” became the decisive spaces. In a body only a few meters thick, a pocket might yield enough crystal groups to change the market for a season, and then the workings could fall quiet again.
The December 2006 pocket is the episode every Telírio collector should know. It produced numerous yellow-green brazilianite crystals longer than 5 cm, set with white albite, large smoky quartz, and hydroxylherderite crystals reaching about 5 cm. For a locality where most brazilianite crystals are under 2 cm, this was not just a good pocket; it was a scale shift. The material appeared in the market around the 2007 Tucson cycle and helped define the modern image of the mine.
A year later, Telírio had another public moment when a group of large brazilianites appeared through major dealer channels. The Mineralogical Record’s 2008 online report noted cabinet-sized specimens with lustrous yellow-green crystals, some doubly terminated, reaching 6 cm, plus one opaque but imposing crystal 11 cm long. Wendell Wilson’s quoted assessment that Telírio was “Brazil’s most under-rated occurrence” captured the collector mood: this was not the oldest brazilianite locality, but it was becoming the locality that repeatedly surprised people with how sculptural and large its best specimens could be.
There is also a market rhythm to the mine that collectors sometimes miss. Telírio does not behave like a steady industrial quarry with predictable specimen output. Work follows incentive. When a pocket appears, the supply can jump sharply, sometimes with many kilograms of brazilianite entering the trade. Prices soften, inventories sit, and miners may stop. Then, after the market absorbs the material and fine pieces disappear into collections, the locality again feels scarce. That stop-start cycle explains why Telírio specimens can seem both familiar and elusive: available in modest quality, abruptly expensive in great quality, and always dependent on the last pocket rather than a continuous vein of collector material.
Bartorelli, Andrea, and Carlos Cornejo. “The Telirio Mine, Minas Gerais, Brazil.” The Mineralogical Record 49, no. 3, 2018, pp. 401–429. Major locality article devoted to Telírio, its workings, specimen production, and phosphate assemblage. https://booksgeology.com/mineralogical%20record.5.htm
Serviço Geológico do Brasil / CPRM. “Cristais de Brazilianita da Mina do Telírio.” Geossit record 2339. Detailed geosite entry with coordinates, mine subdivisions, geology, conservation status, bibliography, and specimen significance. https://www.sgb.gov.br/geossit/geossitios/ver/2339
Cassedane, Jacques P. “Famous Mineral Localities: The Córrego Frio Mine and Vicinity, Minas Gerais, Brazil.” The Mineralogical Record 14, no. 4, 1983, pp. 227–237. Classic regional article covering the Córrego Frio–Linópolis phosphate pegmatite setting and early Telírio-area mineral references. https://www.mindat.org/reference.php?id=12907713
Silveira, Luiz Antônio Gomes; Chaves, Mário Luiz de Sá Carneiro; Krambrock, Klaus; Menezes Filho, Luiz Alberto Dias; Brandão, Paulo Roberto Gomes; Scholz, Ricardo; and Costa, Michele Aparecida Flores. “Ocorrência, contexto mineralógico e química mineral da brazilianita e seus depósitos em Minas Gerais.” Geociências 33, no. 3, 2014, pp. 378–392. Study of Minas Gerais brazilianite occurrences, chemistry, color centers, and formation as a secondary product of montebrasite alteration. https://dialnet.unirioja.es/servlet/articulo?codigo=7948488
Frost, Ray L.; Xi, Yunfei; Scholz, Ricardo; Belotti, Fernanda M.; and Menezes Filho, Luiz Alberto Dias. “Raman and infrared spectroscopic characterization of beryllonite, a sodium and beryllium phosphate mineral – implications for mineral collectors.” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 97, 2012, pp. 1058–1062. Spectroscopic paper using beryllonite relevant to Telírio’s rare Be-phosphate assemblage. https://pubmed.ncbi.nlm.nih.gov/22925982/
Almeida, Rafael M.; Höfer, Sonja; Mayerhöfer, Thomas G.; Popp, Jürgen; Krambrock, Klaus; Lobo, Ricardo P. S. M.; Dias, Anderson; and Moreira, Roberto L. “Optical phonon features of triclinic montebrasite: Dispersion analysis and non-polar Raman modes.” Vibrational Spectroscopy 77, 2015, pp. 60–68. Study based on natural single-crystal montebrasite from the Telírio mine, noting the quality of Telírio montebrasite.
Mindat — Telírio claim, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil — Best compact mineral list, photo index, coordinates, associations, and locality hierarchy for collectors checking labels.
SGB-CPRM Geossit — Cristais de Brazilianita da Mina do Telírio — Authoritative Brazilian Geological Survey locality record with geology, mine subdivisions, access notes, and bibliography.
Wikimedia Commons — Minerals of the Telirio Claim — Open image category with multiple Telírio brazilianite, albite, quartz, microcline, and zanazziite photographs.
The Mineralogical Record — March 2008 What’s New article — Useful market and specimen-history note on major Telírio brazilianites, including the reopening history and large-crystal descriptions.
Dialnet — Silveira et al. 2014 brazilianite study — Academic entry and abstract for the Minas Gerais brazilianite chemistry and genesis paper.
PubMed — Frost et al. 2012 beryllonite spectroscopy — Reliable bibliographic page for the beryllonite Raman and infrared study relevant to Telírio’s rare phosphate assemblage.
Mineral Auctions — Brazilianite on Albite, Telírio Mine — Market record illustrating a small-cabinet Telírio brazilianite on albite with size, condition, and realized price.
Dakota Matrix — Beryllonite with Albite, Fluorapatite & Montebrasite — Dealer archive documenting a Telírio rare-phosphate combination specimen.
Trinity Mineral Company — 2008 show report — Show-report context for Telírio montebrasite specimens entering the collector market.
Gatehouse, B. M., and B. K. Miskin. “The crystal structure of brazilianite, NaAl3(PO4)2(OH)4.” Acta Crystallographica Section B 30, 1974, pp. 1311–1317. Foundational crystallographic study of brazilianite from the Córrego Frio pegmatite, essential context for the Telírio/Córrego Frio district. https://journals.iucr.org/b/issues/1974/05/00/
Moore, Thomas P. “What’s New in Minerals: Tucson Show 2007.” The Mineralogical Record 38, no. 3, 2007, p. 218. Reported the December 2006 Telírio brazilianite pocket with crystals over 5 cm, smoky quartz, albite, and hydroxylherderite. https://mineralogicalrecord.com/
