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

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

Photo: Pavel M. Kartashov
Latitude: 50°26'N
Longitude: 95°27'W
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.

The Tanco pegmatite is a highly differentiated, strongly zoned pegmatite.

Mineral List

Aikinite
Albite
var: Cleavelandite
Alluaudite
Amblygonite
Analcime
var: Cesian Analcime
Annite
Antimony
var: Bismuthian Antimony

'Apatite'
Arsenic
Arsenopyrite
Baryte
Beryl
var: Goshenite
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
Fluor-elbaite
Foitite
Freibergite
Galena
Galenobismutite
'Garnet'
Gladite
Groatite (TL)
Gustavite
Hafnon
Hawleyite
Holmquistite
Hydroxykenomicrolite
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
var: Smoky 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
Whitlockite
Wodginite (TL)
Wopmayite (TL)
Zabuyelite
'Zinnwaldite'
Zircon
var: Hafnian Zircon



107 entries listed. 84 valid minerals. 8 type localities (valid minerals).

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References

NICKEL, E.H., ROWLAND, J.F. & MCADAM, R.C. (1963): Wodginite - a new tin-manganese tantalate from Wodgina, Australia and Bernic Lake, Manitoba. Canadian Mineralogist 7, 390-402.
FERGUSON, R.B., HAWTHORNE, F.C. & GRICE, J.D. (1976): The crystal structures of tantalite, ixiolite and wodginite from Bernic Lake, Manitoba. II. Wodginite. Canadian Mineralogist 14, 550-560.
Černý, P. and Simpson, F.M. (1978): The Tanco pegmatite at Bernic Lake, Manitoba. X. Pollucite. Canadian Mineralogist 16 ,325-333.
ERCIT, T.S., HAWTHORNE, F.C. & ČERNÝ, P. (1992) The wodginite group. I. Structural crystallography. Canadian Mineralogist 30, 597-611.
ERCIT, T.S., ČERNÝ, P., HAWTHORNE, F.C. & MCCAMMON, C.A. (1992): The wodginite group. II. Crystal chemistry. Canadian Mineralogist 30, 613-631.
ERCIT, T.S., ČERNÝ, P. & HAWTHORNE, F.C. (1992): The wodginite group. III. Classification and new species. Canadian Mineralogist 30, 633-638.
RAMIK, R.A., STURMAN, B.D., DUNN, P.J. & POVARENNYKH, A.S. (1980): Tancoite, a new lithium sodium aluminum phosphate from the Tanco pegmatite, Bernic Lake, Manitoba. Canadian Mineralogist 18, 185-190.
HAWTHORNE, F.C. (1983): The crystal structure of tancoite. Tschermaks Mineralogische und Petrographische Mitteilungen 31, 121-135.
Ercit, T.S., Černý, P., Hawthorne, F.C. (1993) Cesstibtantite: a geologic introduction to the inverse pyrochlores. Mineralogy and Petrology: 48: 235-255.
ČERNÝ, P.,ERCIT, S., & Vanstone. P. (1996) Petrology and Mineralization of the Tanco Rare-Element Pegmatite, Southeastern Manitoba. in Winnipeg '96 GAC-MAC Fieldtrip Guidebooks

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.
- Bull. Minéral. (1984): 107: 369-384.
- - Mining Annual Review (1985): 97.
- Canadian Mineralogist (2000): 38: 869-876; 38: 877-891.
- Canadian Mineralogist (2001): 39: 1513.
- American Mineralogist, Volume 94, pages 439–450, 2009

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