Tanco Mine (Bernic Lake Mine), Bernic Lake, Lac-du-Bonnet area, Manitoba, Canada

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A tantalum-lithium-cesium mine in the Tanco pegmatite. Owned by The Tantalum Mining Corp. of Canada (TANCO). Discovered 1930, opened 1954-1960. Reopened 1967 and closed 1982. Workings went to at least the 280 foot (90 meter) level.

References

- Černý, P. and Simpson, F.M. (1978): The Tanco pegmatite at Bernic Lake, Manitoba. X. Pollucite.

- Canadian Mineralogist (1978): 16: 325-333.

- Canadian Mineralogist (1980): 18: 185-190.

- Bull. Minéral. (1984): 107: 369-384.

- Mining Annual Review (1985): 97.

- Mineralogical Record: 32: 416.

- Tschernich, R. (1992): Zeolites of the World, p.51, 428.

- Ercit, T.S., Černý, P., Hawthorne, F.C. (1993) Cesstibtantite: a geologic introduction to the inverse pyrochlores. Mineralogy and Petrology: 48: 235-255.

- Canadian Mineralogist (2000): 38: 869-876; 38: 877-891.

- Moore, P. B., 2000, Analyses of Primary Phosphates from Pegmatites in Maine and Other Localities, in V. T. King (editor), Mineralogy of Maine. Mining History, Gems, and Geology, Maine Geological Survey, Augusta, Maine, p. 333-336.

- Canadian Mineralogist (2001): 39: 1513.

- Canadian Rockhound: 3(2).

- American Mineralogist, Volume 94, pages 439–450, 2009

External Links

http://www.davidkjoyceminerals.com/pagefiles/articles_tancomine.asp

Mineral List

Aikinite Albite Alluaudite Amblygonite Analcime var: Cesian Analcime Annite Antimony var: Bismuthian Antimony 'Apatite' Arsenic Arsenopyrite Baryte Beryl var: Morganite Beusite Biotite Bismuth var: Antimonian Bismuth Bismuthinite Bournonite Calcite Cassiterite Černýite (TL) Chalcopyrite 'Collinsite-Fairfieldite Series' Cookeite

Cosalite Crandallite Cubanite Diomignite (TL) Dorfmanite Dravite Dyscrasite Elbaite Ercitite (TL) Eucryptite Fairfieldite Feruvite Fluorapatite Foitite Freibergite Galena Galenobismutite 'Garnet' Gladite Groatite (TL) Gustavite Hafnon Hawleyite Holmquistite Illite Ilmenite var: Manganoan Ilmenite

Ixiolite Kesterite 'K Feldspar var: Adularia' Lead Lepidolite Lithiophilite Lithiophosphate Marcasite Miargyrite 'Mica Group' Microcline Microlite Group var: Cesstibtantite Molybdenite Montebrasite Montmorillonite Muscovite var: Lithian Muscovite Overite Pekoite 'Perthite' Petalite Pollucite Pyrargyrite Pyrite Pyrrhotite

Quartz Rhodochrosite Rossmanite Schorl Simpsonite Sphalerite Spodumene Stannite Stibarsen var: Bismuthian Stibarsen Tancoite (TL) Tantalite Tantalite-(Mn) 'Tapiolite' Tapiolite-(Fe) Tetrahedrite Titanowodginite (TL) 'Tourmaline var: Rubellite' Triphylite Triplite 'Unnamed (F-analogue of Elbaite)' Whitlockite Wodginite Zabuyelite Zinnwaldite Zircon var: Hafnian Zircon

103 entries listed. 82 valid minerals. 6 type localities (valid minerals).