Mine detail: Kirwin

Previously called 'Bald MountainWolf ShaftNorth Side MineAmax Kirwin'

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Location

Lat / long: 43.87493, -109.28465

Resource(M)

Primary: Copper
Secondary: Silver, Molybdenum, Gold, Lead, Zinc
Ore: Chalcopyrite, Molybdenite, Chalcocite, Covellite, Digenite, Pyrite
Gangue: Calcite, Epidote, Quartz, Biotite, Chlorite, Clay
Orebody form: PORPHYRY COPPER; HYDROTHERMAL STOCK DISSEMINATED; HYDROTHERMAL STOCK STOCKWORK; HYDROTHERMAL STOCK VEINS; SUPERGENE ENRICHMENT, ARCUATE
Discovery year: 1892

Production

Operation type: Surface
Deposit type: Porphyry Cu
Development status: Past Producer

Geology

Host rock:Bald Mountain-Kirwin formation
Host type:Quartz Latite
Associated rock:Wiggins Formation (Lower Member), Bald Mountain intrusive complex
Associated type:Andesite,Plutonic Rock

References

MAS560290023
DEP10133042
Reference{Deposit:: World Mining 12/1969 (Exploration)}{Deposit:: Breckenridge,R.M.,Application Of Erts Imagery To Geologic Mapping In The Volcanic Terrain Of Northwest Wyo.,Dept. Of Geol. Univ. Of Wyo. 1973-Prepared For Goddard Space Flight Center.}{Deposit:: Schassberger, H.T., 1972, A K-Ar age of a quartz monzonite dike in the Kerwin mining district, Park County, Wyoming: Isochron/West, no. 4, p. 31.}{Deposit:: Long, K.R., 1995, Production and reserves of Cordilleran (Alaska to Chile) porphyry copper deposits, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20, p. 35-68}{Deposit:: Hausel, D.W., 1989, The geology of Wyoming?s precious metal lode and placer deposits: Geological Survey of Wyoming Bulletin 68, 248 p.}{Deposit:: Hausel, D.W., 1993, Metal and gemstone deposits of Wyoming, in Snoke, A.W., Steidtmann, J.R., and Roberts, S.M., eds., Geology of Wyoming: Geological Survey of Wyoming Memoir 5, p. 816?835.}{Deposit:: Hansen,R.P. and Glover,F., Environmental Inventory and Impact Analysis At Kirwin Area, Park County, Wyo. For Amax Submit By Rocky Mtn. Center On Environment 6/1/73 (7 Volumes)}{Deposit:: Wyo Geol Surv Open Files}{Deposit:: E/Mj 9/1972 (General)}{Deposit:: Wilson, William H., The Kirwin Mineralized Area, Park County Wyoming, Geological Survey Of Wyo. Preliminary Report No.2 1964}{Deposit:: Wilson, William H., Detachment Faulting In Volcanic Rocks Wood River Area, Park County, Wyo., Twenty-Seventh Annual Field Conference-1975, Wyo. Geol. Assoc. Guidebook, P. 167}{Deposit:: Johnson, Md Et Al. Road Log Cody To Meeteetse And Kirwin In 27th Annual Field Conf-1975 Wyo. Geol. Assoc. Guidebook Page 287.}{Deposit:: Wilson,W.H., Volcanic Geol. And Mineralization Absaroka Mountains, Northwest Wyo. In 1971 Wyo.Geol.Assoc. Guidebook}{Deposit:: Hewett,D.F.,The Ore Deposits Of Kirwin,Wyo.,USGS Bulletin 540, 1912 Pp. 121-132.}{Deposit:: Hausel, W.D., 1997, Copper, lead, zinc, molybdenum, and associated metal deposits of Wyoming; Geological Survey of Wyoming, Bulletin 70, 229 p.}{Deposit:: Nowell, W., 1971, The petrology and alteration of the Kirwin mineralized area, Park County, WY: MS. thesis Univ. of Montana, Missoula. 72 p.}{Reserve-Resource:: World Mining 9/1977 P. 111 (Reserves)}
ReporterSouth Dakota School of Mines, Anderson, Claire, Daley, Michael R.