Mine detail: McFadden Mine

Previously called 'Yankee Fork MineFraction Lode ClaimsMcFadden Group MineAltura'

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Location

Lat / long:

44.45019, -114.70653

Resource(M)

Primary:	Silver
Secondary:	Gold
Tertiary:	Copper, Lead, Antimony
Ore:	Argentite, Chalcopyrite, Electrum, Gold, Tetrahedrite
Gangue:	Galena, Pyrite, Quartz
Discovery year:	1878

Production

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

Geology

Host type:	Tuff
Associated rock:	Challis Volcanics-Andesitic Tuff
Associated type:	Tuff
Alteration processes:	Fe, Cu Stains

References

MRDS	W014277
MAS	160370267
DEP	10071069
Reference	{Deposit:: Umpleby, J. B., 1913, Some Ore Deposits In Northwestern Custer County, Idaho: USGS Bulletin 539, 104 P.}{Deposit:: Anderson, A. L., 1949, Silver - Gold Deposits Of The Yankee Fork District, Custer County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 83, 37 P.}{Deposit:: Ross, C. P., 1927 , Ore Deposits In The Tertiary Lava In The Salmon River Mountains, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 25 , 20 P.}{Deposit:: U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-3, No. 476, P. 218.}{Production:: Umpleby, J. B., 1913, USGS Bulletin 539, P. 89.}
Reporter	Western Field Operations Center (WFOC), Siefken, Robert R. (Miller, Pat)