Mine detail: Tamarack and Custer Mine

Previously called 'Tamarack and Chesapeak MineCuster Mine'

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Location

Lat / long: 47.53567, -115.84792

Resource(M)

Primary: Silver, Lead, Zinc
Tertiary: Gold, Copper
Ore: Galena, Sphalerite, Chalcopyrite, Boulangerite, Smithsonite, Cerussite
Gangue: Quartz, Siderite, Magnetite, Pyrite, Calcite, Pyrrhotite, Hematite, Limonite
Orebody form: PINCH AND SWELL
Discovery year: 1885

Production

Operation type: Underground
Deposit type: HYDROTHERMAL VEIN AND REPLACEMENT
Production size: Medium
Development status: Producer
Production years: 1888-1892, 1895-1899, 1904-1907, 1913-1931; 1934-1958; 1978
First production started: 1888
Last production ended: 1978

Geology

Host rock:Burke Formation, Prichard Formation
Host type:Quartzite,Meta-Argillite
Structure:Broad Anticlinal Arch Trending N Broken By Many Cross Faults, Phoenix, Puritan-Standard and Nilus Faults
Tectonic:Belt Basin
Alteration processes:Bleaching; Sericite-Chlorite; Clay; Carbonates; Good ore is found outside of bleached zones, however., Supergene alteration (oxidation) extends to no more than 30 meters depth. Minerals found in the oxide zone include limonite, cerussite, and smithsonite.

References

MRDSW026647
DEP10107345
Reference{Deposit:: Umpleby, J.B., and Jones, E.L., Jr., 1923, Geology and ore deposits of Shoshone County, Idaho: U.S. Geological Survey Bulletin 732, 156 p.}{Deposit:: Fryklund, V.C., Jr., 1964, Ore deposits of the Coeur *lene district, Shoshone County, Idaho: U.S. Geological Survey Professional Paper 445, 103 p..}{Deposit:: Bulla, Edward W., 1951, A mineragraphic study of ore from the Tamarack mine, Burke, Idaho: Moscow, Idaho, University of Idaho, M.S. thesis, 58 p.}{Deposit:: Stephens, E.C., 1946, Memorandum on the Day properties (Tamarack, Hercules, Amazon-Manhattan, Dayrock), Coeur *lene district, Shoshone County, Idaho: Butte, Montana, Anaconda Copper Mining Co., Geological Dept., 5 p. [Anaconda Archive #22019.01]}{Deposit:: Gidel, M.H., 1929, Report on properties adjoining the Sunset GroupL Butte, Mont., Anaconda Copper Mining Co., Geological Dept., 23 p. [Anaconda Archive 21621.09]}{Deposit:: Hollister, V.F., 1950, File memorandum, Tamarack mine, Placer Center Dist., Shoshone Co., Idaho, 2 p.}{Deposit:: Shenon, P.J., and others, 1954, Geological study of the Custer Peak area, Beaver, Placer Center, Lelande, Hunter, and Summit mining districts, Shoshone County, Idaho, 138 p.}{Geology:: Griggs, A.B., 1952, Geology and notes on ore deposits of Canyon-Nine Mile creek area, Shoshone County, Idaho: U.S. Geological Survey Open-File Report 52-55, 108 p.}{Production:: CROSBY, G. M., 1969 , A preliminary examination of trace mercury in rocks, Coeur *lene district, Idaho: Colorado School of Mines Quarterly, v. 64, no. 1, p. 169-194.}{Production:: Mitchell, V.E., and Bennett, E.H., 1983, Production statistics for the Coeur *lene mining district, Shoshone County, Idaho; 1884-1980: Idaho Geological Survey Technical Report 83-3, 33 p.}{Production:: Long, K.R., 1998, Grade and tonnage models for Coeur *lene-type polymetallic veins: US Geological Survey Open-File Report 98-583, 28 p.}
ReporterMiller, Pat J, Ridenour, James, Keith R. Long