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.
Ref.: 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.
Canadian Mineralogist (2001): 39: 1513.
Canadian Rockhound: 3(2).
