Unnamed (south of the Hammond River)

The Unnamed (south of the Hammond River) 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 (south of the Hammond River)

Commodity

Primary: Copper

Location

State: Alaska
District: Koyukuk

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

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Limestone
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Silurian

Name: Limestone
Role: Associated
Age Type: Associated Rock
Age Young: Late Silurian

Analytical Data

Not available

Materials

Not available

Comments

Comment (Geology): Geologic Description = An occurrence of Cu sulfides and/or malachite-azurite stains is in an area mapped as Middle to Upper Devonian(?) conglomerate in a more extensive unit of black slate, phyllite, and chloritic siltstone (Dillon and Reifenstuhl, 1995). These rocks are all part of the Beaucoup Formation. No other information is available.

Comment (Reference): Primary Reference = Brosgi and Reiser, 1964

Comment (Commodity): Ore Material = Unspecified copper sulfides and/or malachite-azurite

Comment (Deposit): Other Comments = A small outcrop, mapped by Dillon and Reifenstuhl (1995) as andesite tuff-dacite flow, is located adjacent to the conglomerate unit about 1/2 mile southeast of the Cu occurrence. This occurrence is located within Gates of the Arctic National Park.

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Brosgi, W.P., and Reiser, H.N., 1964, Geologic map and section of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1-375, 1 sheet, scale 1:250,000.

Reference (Deposit): Cobb, E.H., and Cruz, E.L., 1983, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in the Chandalar quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-278, 91 p.

Reference (Deposit): DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Chandalar and Wiseman quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-340, 205 p.

Reference (Deposit): Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-457, 1 sheet, scale 1:250,000.

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