Unnamed (north of Fisher Creek)

The Unnamed (north of Fisher Creek) 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 (north of Fisher Creek)

Commodity

Primary: Copper

Location

State: Alaska
District: Circle

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 Type: L
Alteration Text: There is local oxidation of copper minerals.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Azurite
Ore: Chalcopyrite
Ore: Malachite
Gangue: Quartz

Comments

Comment (Workings): Workings / Exploration = The area was mapped and sampled in the mid-1970s (Clark and Foster, 1971).

Comment (Reference): Primary Reference = Clark and Foster, 1971

Comment (Commodity): Gangue = Carbonate

Comment (Deposit): Model Name = Cu-quartz vein.

Comment (Deposit): Other Comments = This site is within the Yukon-Charley Rivers National Preserve.

Comment (Geology): Geologic Description = This unnamed occurrence is near a high-angle normal fault between Paleozoic to Precambrian pelitic schist on the south and Paleozoic phyllitic argillite on the north (Dover and Miyaoka, 1988). The occurrence consists of chalcopyrite and secondary copper minerals in quartz and carbonate veins in greenschist, greenstone, and thin carbonate layers. The vein material is estimated to be less than 3 percent of the exposed rock (Clark and Foster, 1971).

Comment (Exploration): Status = Probably inactive

References

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Charley River quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-390, 1 sheet, scale 1:250,000.

Reference (Deposit): Clark, S.H.B., and Foster, H.L., 1971, Geochemical and geological reconnaissance in the Seventymile River area, Alaska: U.S. Geological Survey Bulletin 1315, 21 p.

Reference (Deposit): Dover, J.A., and Miyaoka, R.T., 1988, Reinterpreted geologic map and fossil data, Charley River quadrangle, east-central Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2004, 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 Charley River and Coleen quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-632, 45 p.

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