The Unnamed (south of upper Wood River) is a copper and gold 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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Unnamed (south of upper Wood River) MRDS details
Site Name
Primary: Unnamed (south of upper Wood River)
Commodity
Primary: Copper
Primary: Gold
Location
State: Alaska
District: Bonnifield
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: Massive sulfide, Besshi (Japanese deposits)
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Comments
Comment (Deposit): Model Name = Besshi massive sulfide(?) (Cox and Singer, 1986; model 24b)
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = Surface samples only.
Comment (Geology): Geologic Description = The general area of this occurrence is underlain by the Devonian Yanert Fork sequence, which consists of siliceous mudstone, argillite, slate, phyllite, semischist, and impure quartzite, and minor metachert and metavolcanic rocks. The bedded rocks are cut by Triassic(?) gabbro sills and dikes (Wilson and others, 1998). The occurrence consists of iron-stained, chalcopyrite- and pyrite-bearing gabbro, and pyritic metasedimentary rocks. Samples of the sulfide-bearing rocks contain up to 172 ppm copper and 0.7 ppm gold (Sherwood and others, 1976).
Comment (Reference): Primary Reference = Sherwood and others, 1976
Comment (Geology): Age = Probably Late Triassic.
References
Reference (Deposit): Wilson, F.H., Dover, J.H., Bradley, D.C., Weber, F.R., Bundtzen, T.K., and Haeussler, P.J., 1998, Geologic map of central (interior) Alaska: U.S. Geological Survey Open-File Report 98-133, 17 p., 2 sheetsm, scale 1:500,000.
Reference (Deposit): Sherwood, K.W., Craddock, Campbell, and Smith, T.E., 1976, Mineral occurrences in the upper Wood River, Edgar Creek, and West Fork Glacier areas, central Alaska Range: Alaska Division of Geological & Geophysical Surveys Special Report 14, 13 p.
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