The Cloudman Bay is a gold and silver 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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Cloudman Bay MRDS details
Site Name
Primary: Cloudman Bay
Commodity
Primary: Gold
Primary: Silver
Location
State: Alaska
District: Copper River
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Pyrite
Ore: Chalcopyrite
Gangue: Quartz
Comments
Comment (Reference): Primary Reference = Cobb, 1972 (MF392)
Comment (Deposit): Other Comments = Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = Capps and Johnson (1913) reported 40 feet of stripping at the site. Samples across a 30 foot width of stockwork ran a few dollars/ton when gold was $20/oz. (Capps and Johnson, 1915). Site could not be located in the early 1980s (Jansons and others, 1984).
Comment (Geology): Age = Probably Tertiary based on the age of the host rocks.
Comment (Geology): Geologic Description = The country rock at this prospect is slate of the Tertiary Orca Group (Nelson and others, 1985). Capps and Johnson (1915) reported a 20-to 30-foot-wide quartz stockwork zone in the slate carrying chalcopyrite, pyrite, and sphalerite. Capps and Johnson (1913) reported 40 feet of stripping at the site. Samples across a 30 foot width of stockwork ran a few dollars/ton when gold was $20/oz. (Capps and Johnson, 1915). Site could not be located in the early 1980s (Jansons and others, 1984).
References
Reference (Deposit): Capps, S.R., and Johnson, B.L., 1913, Mineral deposits of the Ellamar district: U.S. Geological Survey Bulletin 542, p. 86-124.
Reference (Deposit): Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, Southcentral Alaska: U.S. Bureau of Mines Open-File Report 5-84, 218 p., 2 sheets, scale 1:250,000.
Reference (Deposit): Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, 16 p., 1 sheet, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Cordova quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-392, 1 sheet, scale 1:250,000.
Reference (Deposit): Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, scale 1:250,000.
Reference (Deposit): Capps, S.R., and Johnson, B.L., 1915, The Ellamar district, Alaska: U.S. Geological Survey Bulletin 605, 125 p.
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