Commodities
PrimarySilver
SecondaryGold
TertiaryCopper, Lead, Antimony
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeS
WorkingsUnderground
Materials
Ore mineralsArgentite, Chalcopyrite, Electrum, Gold, Tetrahedrite
GangueGalena, Pyrite, Quartz
Geology
Host rockTuff
Associated rockTuff · Challis Volcanics-Andesitic Tuff
AlterationFe, Cu Stains
Economic & production
Development statusPast Producer
Discovery year1878
Identification
Deposit ID10071069
MRDS IDW014277
Alternate namesMcFadden Group Mine, Altura, Yankee Fork Mine, Fraction Lode Claims
RegionNA
Data scoreB
Coordinates44.45019, -114.70653
References
Umpleby, J. B., 1913, Some Ore Deposits In Northwestern Custer County, Idaho: USGS Bulletin 539, 104 P.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.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.U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-3, No. 476, P. 218.Umpleby, J. B., 1913, USGS Bulletin 539, P. 89.