The Unnamed (southwest of Pyramid Peak) is a zinc and 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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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Unnamed (southwest of Pyramid Peak) MRDS details
Site Name
Primary: Unnamed (southwest of Pyramid Peak)
Commodity
Primary: Zinc
Primary: Copper
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
Role: Host
Age Type: Host Rock
Age Young: Late Triassic
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Pyrite
Ore: Chalcopyrite
Comments
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = Surface exploration only.
Comment (Deposit): Model Name = Besshi massive sulfide (Cox and Singer, 1986; model 24b)
Comment (Reference): Primary Reference = Cox and others, 1989
Comment (Geology): Age = the sulfide minerals probably are syngenetic with their Upper Triassic host rocks.
Comment (Geology): Geologic Description = The country rocks in the area of this prospect are Upper Triassic, generally thin-bedded, commonly cross-bedded, carbonaceous shale, argillite, sandstone, and siltstone. The strata are cut by numerous dikes, sills, and plugs of altered diabase and gabbro, and by Upper Cretaceous?-Lower Tertiary granites (Wilson and others, 1998). The prospect consists of pyrite, chalcopyrite, and sphalerite disseminated in the bedded rocks.
References
Reference (Deposit): Cox, D.P., Light, T.D., Csejtey, Bela, Jr., and Campbell, D.L., 1989, Mineral resource assessment map of the Healy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map, MF-2058-A, scale 1:250,000.
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.
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