Unnamed (in Selawik Hills)

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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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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