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Sphalerite from
Black Rock Mine, Walkerville, Butte District (Summit Valley District), Silver Bow Co., Montana, USA

Description
Quality of samples:	not specified / average specimens
Confirmation
Validity:	Believed Valid
References
References:	Sales R. H. (1914),Ore Deposits at Butte, Montana.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Data
Mineral Data:	Click here to view Sphalerite data
Locality Data:	Click here to view Black Rock Mine, Walkerville, Butte District (Summit Valley District), Silver Bow Co., Montana, USA

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