The Unnamed (in Selawik Hills) 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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Unnamed (in Selawik Hills) MRDS details
Site Name
Primary: Unnamed (in Selawik Hills)
Commodity
Primary: Copper
Location
State: Alaska
District: Selawik
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: Basaltic Cu (BC name is Volcanic redbed Cu)
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Chlorite and epidote.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Chalcopyrite
Ore: Malachite
Gangue: Calcite
Gangue: Chlorite
Gangue: Epidote
Comments
Comment (Reference): Primary Reference = Barker, 1985
Comment (Deposit): Model Name = Basaltic Cu? (Cox and Singer, 1986; model 23)
Comment (Geology): Geologic Description = The country rocks at this occurrence consist of Jurassic metabasalt and metasedimentary rocks. The occurrence consists of pyrite, malachite, and minor chalcopyrite in calcite, chlorite and epidote veins in chlorite-altered basalt (greenstone) and in fine-grained banded metasedimentary rocks. Metallic minerals in the veins occur as veinlets and pods. Sulfide banding in the greenstone consists predominately of pyrite. Copper values in high-grade grab samples did not exceed 1,000 ppm. Copper values greater than 100 ppm were noted in a stream-sediment sample taken from a stream which drains the site (Barker, 1985).
Comment (Deposit): Other Comments = This occurrence is on the boundary of the Selawik National Wildlife Refuge.
Comment (Workings): Workings / Exploration = Site was sampled by the U.S. Bureau of Mines (Barker, 1985).
Comment (Geology): Age = Jurassic
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Barker, J.C., 1985, Sampling and analytical results of a mineral reconnaissance in the Selawik Hills area, northwestern Alaska: U.S. Bureau of Mines Open-File Report 43-85, 67 p.
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