Mine detail: Montana Mine

Previously called 'Montana GroupOld Montana'

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Location

Lat / long: 44.44379, -114.70653

Resource(M)

Primary: Gold
Secondary: Silver
Tertiary: Lead, Zinc, Copper
Ore: Argentite, Chalcopyrite, Galena, Gold, Sphalerite
Gangue: Chalcedony, Pyrite, Quartz
Orebody form: CHUTE , CHIMNEY-LIKE
Discovery year: 1877

Production

Operation type: Underground
Production size: Small
Development status: Past Producer
First production started: 1877

Geology

Host type:Tuff
Associated rock:Challis Volcanics-Tuff
Associated type:Tuff
Alteration processes:Hydrothermal Alteration

References

MRDSW014280
MAS160370270
DEP10105694
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:: Bell, R. N., 1935, The Gold Resources Of Idaho: Mining And Contracting Review, V. 33, No. 37, P. 6 - 7.}{Deposit:: Stiles, C. A., 1976 , Geology And Alteration Of The West Fork Mayfield Creek Area, Custer County, Idaho: Moscow, Idaho, Univ. Of Idaho M.S. Thesis, P. 103 - 106 .}{Deposit:: 5) 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:: 1913 Geolmap Umpleby, J. B., Bulletin 539}{Deposit:: 1949 Recon Idaho Bureau Of Mines And Geology Pamphlet 83}{Deposit:: U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-3, No. 474, P. 218.}{Production:: Anderson, A. L., 1949, Idaho Bureau Of Mines And Geology Pamphlet 83; Item 2, Bell, R. N., 1935, Mining And Contracting Review, V. 33, No. 37}
ReporterWestern Field Operations Center (WFOC), Siefken, Robert R. (Miller, Pat)