Unnamed

The Unnamed 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

Satelite View

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

Commodity

Primary: Copper

Location

State: Alaska
District: Yentna

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

Alteration Text: The Shellabarger stock is described as an altered gabbro by Reed and others (1978) and by Reed and Nelson (1980). Alteration mineralogy is not specified.

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Reference): Primary Reference = Reed and others, 1978

Comment (Exploration): Status = Inactive

Comment (Commodity): Ore Material = Unidentified copper-bearing minerals

Comment (Geology): Age = Late Cretaceous/early Tertiary; mineralization is interpreted to be linked to the Shellabarger stock, one of the composite plutons mapped by Reed and Nelson (1980).

Comment (Workings): Workings / Exploration = Reconnaissance mapping, stream silt, pan concentrate and rock sampling by the U.S. Geological Survey (Reed and others, 1978; Reed and Nelson, 1980) are all that have been described here. Reed and others (1978) report three samples that averaged 0.1% copper from the Shellabarger stock, an altered biotite-pyroxene gabbro.

Comment (Geology): Geologic Description = Reed and others (1978) report three samples that averaged 0.1% copper from the Shellabarger stock, an altered biotite-pyroxene gabbro. This stock is mapped as one of the composite plutons (Tcp) by Reed and Nelson (1980). It lies northwest of the main belt of composite plutons and intrudes undivided Paleozoic sedimentary rocks.

References

Reference (Deposit): Reed, B.L., Nelson, S.W., Curtin, G.C., and Singer, D.A., 1978, Mineral resources map of the Talkeetna Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-870-D, 1 sheet, scale 1:250,000.

Reference (Deposit): Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, scale 1:250,000.

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