LudlamiteBlackbird Mine, Blackbird mine complex, Blackbird District, Lemhi Co., Idaho, USA
Photo: Peter Haas Latitude: 45°7'2"N
Longitude: 114°20'33"W
A cobalt mine in the Uncle Sam ore zone in the southern part of the Blackbird mine field. This ore zone cosists of steeply dipping north- to northeast-trending shear zones which host sulphide lenses, veins, veinlets and stringers. Alteration envelopes also contain sulphides in silicified and chloritized host rocks.
Previously owned by Noranda Inc. & M.A. Hanna Co., then sold to Blackbird Metals, Inc. at the end of 1989. Site re-mediated as Superfund site. Discovered about 1892. Cobalt production in 1918.
References
Allan Young (2010) The Blackbird Mine, Lemhi County Idaho. Mineralogical Record 41:355-370.
Minerals Today Magazine, U.S. Bureau of Mines, Jan 1990.
Nash, J. T.; Hahn, G. A.; Saunders, J. A. (1987) The occurrence of gold in siliceous Co-Cu exhalite deposits of the Blackbird mining district, Lemhi County, Idaho USGS OFR 87-410.
Bookstrom, A.A., Johnson, C.A., Landis, G.P., and Frost, T.P. (2007): Blackbird Fe-Cu-Co-Au-REE Deposits. In: O'Neill, J.M. (ed.): Metallogeny of Mesoproterozoic Sedimentary Rocks in Idaho and Montana - Studies by the Mineral Resources Program, U.S. Geological Survey, 2004–2007. USGS Open-File Report 07-1280, pp. 11-20.
Mineral List
38 entries listed. 30 valid minerals.
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