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Search for specimens: View all ludlamite specimens from Huanuni Mine, Bolivia
Huanuni Mine is at Huanuni in Pantaleón Dalence Province, Oruro Department, Bolivia, near 18°17'03"S, 66°49'59"W. It is an active mine locality on and around Pozokoni Hill, in the central part of the Eastern Cordillera of the Bolivian Andes. In mineral-collector geography it belongs to the Bolivian Tin Belt, a chain of exceptionally productive tin-polymetallic deposits that has shaped both Boliviaâs economy and its specimen culture.
The deposit is a hydrothermal Sn-W-Pb-Ag-Zn system hosted mainly by Paleozoic sedimentary rocks: quartzites, shales, and siltstones of the Llallagua, UncÃa, and Cancañiri formations, with lesser mineralization in Miocene volcanic rocks of the Morococala Formation. The ore structures are fissure-filling veins, many of them less than a meter thick, crudely banded and mineralogically complex. The early assemblage includes quartz and tourmaline, followed by cassiterite and successive sulfide, sulfosalt, carbonate, clay, and phosphate stages. Fluid-inclusion work has recorded hot saline brines, with homogenization temperatures reported as high as 425 °C, placing Huanuni firmly in the high-energy hydrothermal tradition of the central Andes.
Huanuni is also a historical mine in the fullest sense. In the nineteenth century it was exploited for silver minerals. By the second decade of the twentieth century, cassiterite had become the principal ore. Since 1952, after Boliviaâs mining nationalization, the mine has belonged to COMIBOL, the Corporación Minera de Bolivia. Modern mineralogical work describes it as Boliviaâs largest tin producer, and one of the key tin deposits of the world.
The mineâs commercial life has never been separate from its social history. Huanuni has remained an active industrial operation rather than a casual collecting ground. Collecting access should be regarded as restricted and mine-controlled; specimen material reaches the market through miners, local networks, and established dealers rather than through open recreational collecting. That matters for provenance. A sound Huanuni ludlamite specimen should carry a credible old label, dealer history, or mine-to-dealer chain whenever possible, because the mine has produced multiple green phosphate minerals and collectors often prize locality-specific associations.
Notable finds include classic ludlamite sprays and bowties from late twentieth-century and early twenty-first-century production, vivianite-ludlamite combinations on pyrite, ludlamite on siderite, and pieces large enough to enter museum and high-end dealer inventories. Huanuni is also the type locality for aheylite and nikischerite, underscoring how phosphate and sulfate mineralogy continued to develop in the late stages of a deposit better known to industry for tin.## Huanunié±å±±ïŒããªãã¢ïŒç£ã«ãã©ã ç³ã®ç¹åŸŽ
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Mindat ã®ç£åºèšé²: Ludlamite from Huanuni Mine â Huanuni ã§ã® ludlamite ãæå¹ãªèšèŒçš®ãšããŠææžåããåŒãé¢é£é±ç©ã®åççµ±èšãã®ã£ã©ãªãŒã¢ã¯ã»ã¹ãåèæç®ãæäŸã
Mindat ã®ç£å°ããŒãž: Huanuni Mine â 座æšãé±å±±ç¶æ ãååãé±ç©ãªã¹ããäžçã§æã豪è¯ãªã¹ãºç³é±åºãšããŠã® Huanuni ã«é¢ããæ³šèšãå«ãã³ã¢ç£å°èšé²ã
Cacho, A.; Melgarejo, J.-C.; CamprubÃ, A.; Torró, L.; Castillo-Oliver, M.; Torres, B.; Artiaga, D.; Tauler, E.; MartÃnez, Ã.; Campeny, M.; Alfonso, P.; Arce-Burgoa, O. R. (2019). âMineralogy and Distribution of Critical Elements in the SnâWâPbâAgâZn Huanuni Deposit, Bolivia.â Minerals 9(12), 753. â ããªãã¢ã® Huanuni æåé±åºã®çŸä»£çãªäœç³»çé±ç©åŠç ç©¶ãå°è³ªããã¡ã€ã³ãå ±çé¢ä¿ãéèŠå çŽ ãã£ãªã¢ãå«ãã
Arce, O.; Nambu, M. (1989). âFluid Inclusion Study in the Huanuni Mine, Bolivia.â Shigen-to-Sozai 105(14), 1073â1078. â Huanuni ã®æ°Žç±ç³»ãèæ§é ãæ¡æäœæ¥ãå ±çé¢ä¿ã«é¢ããå€ããéèŠãªç ç©¶ã
Smith, B.; Smith, C.; Petrov, A. (2001). âA Guide to Mineral Localities in Bolivia.â The Mineralogical Record 32(6), 457â482. â Mindat ã Huanuni èšé²ã§åŒçšããããªãã¢ã®é±ç©ç£å°ã¬ã€ããã³ã¬ã¯ã¿ãŒåãã
The Mineralogical Record Vol. 32, No. 6, 2001 back issue â ãããªãã¢ã®é±ç©ç£å°ã¬ã€ããå·ãå«ãå·ã
The Mineralogical Record Index, Volumes 26â35: ludlamite entries â Huanuni ã® ludlamite ãã€ã©ã€ããå«ã玢åŒé ç®ã4 x 4 cm ã®çµæ¶çŸ€ããã倧ããåºè³ªäžã® 1 cm çµæ¶ããŽã£ãŽã£ã¢ãã€ãäžã®çµæ¶ãé»ééé±äžã®ç©ç¶ãããªã¥ã¹ã£ãŒã»ããªãäžã®åŽé§ããã㊠ãŽã£ãŽã£ã¢ãã€ãäžã®ããªãã®4 cm ã¯ã©ã¹ã¿ãŒãå«ãã
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Mindat ããã©ã«ããŒãž: Nikischerite â Huanuni çš®å°å°è³ªé±ç©ãšããŠããã·ã·ã©ã€ããèšé²ãã2003 幎㮠Canadian Mineralogist è«æã瀺ãã
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