Wyoming · Park County
Past Producer

Kirwin

Park County, Wyoming, United States
CopperSilverMolybdenumGoldLeadZinc
⌖ Show on mapUSGS source ↗
Commodities
PrimaryCopper
SecondarySilver, Molybdenum, Gold, Lead, Zinc
Commodity typeM
Deposit
Deposit typePorphyry Cu
Model53: Porphyry Cu
WorkingsSurface
Orebody formPORPHYRY COPPER; HYDROTHERMAL STOCK DISSEMINATED; HYDROTHERMAL STOCK STOCKWORK; HYDROTHERMAL STOCK VEINS; SUPERGENE ENRICHMENT, ARCUATE
Materials
Ore mineralsChalcopyrite, Molybdenite, Chalcocite, Covellite, Digenite, Pyrite
GangueCalcite, Epidote, Quartz, Biotite, Chlorite, Clay, Barite
Geology
Host rockQuartz Latite · Bald Mountain-Kirwin formation
Associated rockAndesite,Plutonic Rock · "Wiggins Formation (Lower Member)", "Bald Mountain intrusive complex"
Economic & production
Development statusPast Producer
Discovery year1892
Identification
Deposit ID10133042
MRDS IDW002697
Alternate namesAmax Kirwin, North Side Mine, Wolf Shaft, Kirwin Copper, Kerwin, Bald Mountain
RegionNA
Data scoreA
Coordinates43.87493, -109.28465
References
World Mining 12/1969 (Exploration)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.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.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. 35-68Hausel, D.W., 1989, The geology of Wyoming?s precious metal lode and placer deposits: Geological Survey of Wyoming Bulletin 68, 248 p.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.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)Wyo Geol Surv Open FilesE/Mj 9/1972 (General)Wilson, William H., The Kirwin Mineralized Area, Park County Wyoming, Geological Survey Of Wyo. Preliminary Report No.2 1964Wilson, William H., Detachment Faulting In Volcanic Rocks Wood River Area, Park County, Wyo., Twenty-Seventh Annual Field Conference-1975, Wyo. Geol. Assoc. Guidebook, P. 167Johnson, Md Et Al. Road Log Cody To Meeteetse And Kirwin In 27th Annual Field Conf-1975 Wyo. Geol. Assoc. Guidebook Page 287.Wilson,W.H., Volcanic Geol. And Mineralization Absaroka Mountains, Northwest Wyo. In 1971 Wyo.Geol.Assoc. GuidebookHewett,D.F.,The Ore Deposits Of Kirwin,Wyo.,USGS Bulletin 540, 1912 Pp. 121-132.Hausel, W.D., 1997, Copper, lead, zinc, molybdenum, and associated metal deposits of Wyoming; Geological Survey of Wyoming, Bulletin 70, 229 p.Nowell, W., 1971, The petrology and alteration of the Kirwin mineralized area, Park County, WY: MS. thesis Univ. of Montana, Missoula. 72 p.Hausel, D.W., 1982, General Geologic Setting and Mineralization of the Porphyry Copper Deposits, Absaroka Volcanic Plateau, Wyoming; in 33rd Annual Field Conference - 1982; Wyoming Geological Association Guidebook, pp. 297-313.Osterwald and others, 1966, Mineral resources of Wyoming: WGS Bull. 50, 287 p.World Mining 9/1977 P. 111 (Reserves)