The Nenana 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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Nenana MRDS details
Site Name
Primary: Nenana
Commodity
Primary: Zinc
Primary: Copper
Secondary: Silver
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: Prospect
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: Pyrite
Ore: Sphalerite
Ore: Chalcopyrite
Comments
Comment (Deposit): Model Name = Besshi massive sulfide (Cox and Singer, 1986; model 24b)
Comment (Workings): Workings / Exploration = Exploration consisted of rock-chip and soil sampling (unpublished report for the New Alaska Syndicate, 1977).
Comment (Geology): Age = the sulfide minerals probably are syngenetic with their Upper Triassic host rocks.
Comment (Reference): Primary Reference = Balen, 1990 (OFR 34-90)
Comment (Exploration): Status = Inactive
Comment (Geology): Geologic Description = The area of the Nenana prospect is underlain by Upper Triassic, 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 sedimentary rocks.
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): Balen, M.D., 1990, Geochemical sampling results from the Bureau of Mines Investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 plates, scale 1:250,000.
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