Mine detail: Sheep Mountain

Previously called ''

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Location

Lat / long: 61.83959, -147.47264

Resource(B)

Primary: Gypsum-Anhydrite, Copper, Clay
Ore: Azurite, Bornite, Chalcocite, Chalcopyrite, Gypsum, Kaolin, Malachite, Pyrite
Gangue: Calcite, Epidote, Quartz, Sericite, Serpentine

Production

Operation type: Unknown
Development status: Past Producer

Geology

Alteration processes:Large area of south flank of Sheep Mountain is strained dark red from oxidation of pyrite in greenstone (Berg and Cobb, 1967). Oxidation of Cu minerals.

References

MRDSA011649
DEP10000977
Reference{Deposit:: Brooks, A.H., 1913, Mineral resources of Alaska, report on progress of investigations in 1912: U.S. Geological Survey Bulletin 542, 308 p.}{Deposit:: Martin G.C., and Mertie, J.B., 1914, Mineral resources of the upper Matanuska and Nelchina valleys, Alaska: U.S. Geological Survey Bulletin 592-H, p. 273-299, map.}{Deposit:: Brooks, A.H., 1915, Mineral resources of Alaska in 1914: U.S. Geological Survey Bulletin 622, 238 p.}{Deposit:: Eckhart, R.A., 1953, Gypsiferous deposits on Sheep Mountain, Alaska: U.S. Geological Survey Bulletin 989-B, p. 39-61.}{Deposit:: Rutledge, F.A., Thorne, R.L., Kerns, W.H., and Mulligan, J.J., 1953, Preliminary report: Nonmetallic deposits accessible to the Alaska Railroad as a possible source of raw materials for the construction industry: U.S. Bureau of Mines Report of Investigations 4932, 129 p.}{Deposit:: Jasper, M.W., 1965, Geochemical investigations of selected areas in southcentral Alaska, 1964: Alaska Division of Mines and Minerals Geochemical Report 4, 31 p.}{Deposit:: Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.}{Deposit:: Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000.}{Deposit:: MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.}{Deposit:: Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.}
ReporterS.W. Huss, D.P. Bickerstaff