Mine detail: Keystone Mine

Previously called 'Greyhound'

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Location

Lat / long:

44.44519, -114.32842

Resource(B)

Primary:	Fluorine-Fluorite
Tertiary:	Lead, Copper, Beryllium, Silver
Ore:	Chalcopyrite, Fluorite, Galena
Gangue:	Barite, Quartz
Orebody form:	TABULAR, BRECCIA FILL & FISSURE VEIN, STOCKWORK
Other material:	Tetrahedrite
Discovery year:	1877

Production

Operation type:	Underground
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Bayhorse Dolomite; Ramshorn Slate
Host type:	Dolomite

References

MRDS	W014287
MAS	160370278
DEP	10071078
Reference	{Deposit:: Ross, C. P., 1937, Geology And Ore Deposits Of The Bayhorse Region, Custer County, Idaho: USGS Bulletin 877, 161 P}{Deposit:: 1937 Geolmap Ross, C. P., Bulletin 87}{Deposit:: Anderson, 1954, Idaho Bureau Of Mines And Geology Pamphlet 101, P. 12}{Deposit:: Chambers 1966 Phd Dissertation, Univ Of Arizona, 154 P.}{Deposit:: McIlroy, Coffman, Rice, & Hibpshman 1974 USBM Ic 8646}{Deposit:: Shawe & Others 1976 USGS Prof Paper 933 P 35-38}{Deposit:: U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-2, No. 258, P. 168.}{Production:: Ross, C. P., 1937, Geology And Ore Deposits Of The Bayhorse Region, Custer County, Idaho: USGS Bulletin 877, 161 P., P. 116}
Reporter	Siefken, Robert R. (Miller, Pat), Kauffman, John D.