Unnamed (at Peak 5532)

The Unnamed (at Peak 5532) 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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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.

Site Name

Primary: Unnamed (at Peak 5532)

Commodity

Primary: Copper
Secondary: Nickel
Secondary: Chromium

Location

State: Alaska
District: Valdez Creek

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: Mafic Cu-Ni association

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Role: Host
Age Type: Host Rock
Age Young: Triassic

Analytical Data

Not available

Materials

Ore: Pyrrhotite
Ore: Pentlandite
Ore: Chromite
Ore: Chalcopyrite

Comments

Comment (Exploration): Status = Probably inactive

Comment (Reference): Primary Reference = Balen and others, 1991

Comment (Workings): Workings / Exploration = There has only been surface sampling to date.

Comment (Deposit): Model Name = Cu-Ni-PGE (Cox and Singer, 1986; model 5)

Comment (Deposit): Other Comments = This deposit was discovered in the 1980s, during a regional geologic reconnaissance by the Bureau of Land Management (Balen, 1990: OFR 34-90).

Comment (Geology): Geologic Description = The country rocks at this prospect are Middle or Upper Triassic Nikolai Greenstone, and probably cogenetic, ultramafic dikes that cut the greenstone. The deposit consists of disseminations and pods of chalcopyrite, chromite, pentlandite, and pyrrhotite in within the ultramafic intrusive rocks. Samples contain as much as 0.41% chromium, 0.15% copper, 0.11% nickel, 28 ppb palladium, and 140 ppb platinum (Balen and others, 1991).

Comment (Geology): Age = the ore minerals probably are magmatic segregations in the Triassic ultramafic hostrocks.

References

Reference (Deposit): Balen, M.D., and others, 1991, Executive summary of the Bureau of Mines investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Special Publication, 43 p.

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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