The Clark Bay is a copper mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Clark Bay MRDS details
Site Name
Primary: Clark Bay
Commodity
Primary: Copper
Secondary: Gold
Secondary: Molybdenum
Secondary: Silver
Secondary: Zinc
Location
State: Alaska
District: Alaska Peninsula
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Porphyry Cu
Model Name: Porphyry Cu-Mo
Model Name: Porphyry Cu-Au
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Chalcopyrite
Comments
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Tertiary.
Comment (Reference): Primary Reference = Christie, 1974
Comment (Workings): Workings / Exploration = This site was sampled by the Aleut-Quintana-Duval joint venture in 1974 (Christie, 1974). Additional sampling was carried out by the U.S. Geological Survey in the mid-1980's (Arbogast and others, 1987; Frisken, 1992).
Comment (Deposit): Model Name = Porphyry Cu, Porphyry Cu-Mo, Porphyry Cu-Au (Cox and Singer, 1986; models 17, 21a, 20c)
Comment (Deposit): Model Number = 17, 21a, 20c
Comment (Geology): Geologic Description = This occurrence is marked by a color anomaly measuring approximately 8,000 by 4,300 feet (Christie 1974). The area contains Miocene basalt and andesite and Oligocene to Eocene sandstones and siltstones of the Stepovak Bay Formation ( Wilson and others, 1995). Biotite from the volcanic rocks has been dated at 10 to 6 million years (Wilson and others, 1994). Christie (1974) describes fine-grained porphyritic diorite at this location. The rock carries traces of chalcopyrite and as much as 1 percent pyrite. The volcanic rocks carry 1 to 12 percent pyrite. Soil and rock chip samples contained as much as 235 ppm copper, 0.46 ppm gold, 15 ppm molybdenum, 5.8 ppm silver, and 455 ppm zinc. Arbogast and others (1987) describes an intermediate intrusive rock containing abundant pyrite. Silt samples collected at this locality contained 100 ppm copper, 10 ppm molybdenum, and 1 ppm silver; pan concentrates contained 10 ppm molybdenun and 100 ppm tungsten (Frisken, 1992).
Comment (Deposit): Other Comments = This site is on land selected by the Aleut Corporation.
References
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)
Reference (Deposit): Arbogast, B.F., Bailey, E.A., and Frisken, J.G., 1987, Analytical results and sample locality maps of stream sediment, heavy-mineral-concentrate, and rock samples from the Port Moller, Stepovak Bay, and Simeonof island quadrangles, Alaska: U.S. Geological Survey Open-File Report 87-502, 122 p., 2 sheets, scale 1:250,000.
Reference (Deposit): Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.
Reference (Deposit): Frisken, J.G., 1992, Interpretation of reconnaissance geochemical data from the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Bulletin 1968, 47 p., 3 map sheets, scale 1:250,000.
Reference (Deposit): Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.
Reference (Deposit): Wilson, F.H., Shew, N., DuBois, G.D., and Bie, S.W., 1994, Sample locality map and analytical data for potassium-argon ages in the Port Moller, Stepovak Bay and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2155-E, 18 p., 1 map sheet, scale 1:250,000.
Reference (Deposit): Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.
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