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
Secondary: Gold
Secondary: Silver

Location

State: Alaska
District: Hyder

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: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Graywacke hostrock is conspicuously iron stained.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Pyrrhotite
Gangue: Quartz

Comments

Comment (Deposit): Model Name = Polymetallic vein

Comment (Exploration): Status = Inactive

Comment (Reference): Primary Reference = Berg and others, 1977

Comment (Workings): Workings / Exploration = A channel sample taken by the U. S. Bureau of Mines in 1973 across the thickest part of the quartz pod containing the most abundant sulfides assayed 1200 ppm Cu and 1.5 ppm Ag. A grab sample of a smaller pod about 6 inches thick contained a similar amount of Ag, much less Cu, and 0.05 ppm Au.

Comment (Deposit): Other Comments = Twenty or more claims were staked in 1928 or 1929 on the northwest side of Banded Mountain, but it is not known whether they included this occurrence.? the site is in Misty Fiords National Monument.

Comment (Geology): Geologic Description = The country rock in the general area of this occurrence is graywacke of the Jurassic or older Mesozoic Hazelton Group (Berg and others, 1977, p. 15 and plate 1). A field investigation in 1973 by the U.S. Bureau of Mines (Berg and others, 1977, p. 133) reported that the deposit consists of a quartz pod that contains pyrrhotite and traces of chalcopyrite, in conspicuously iron-stained graywacke. The pod is about 2 feet thick and probably no more than 20 feet long; it pinches out at either end.

References

Reference (Deposit): Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.

Reference (Deposit): Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-922, 98 p.

Reference (Deposit): Berg, H.C., Elliott, R.L., Smith, J.G., Pittman, T.L., and Kimball, A. L., 1977, Mineral resources of the Granite Fiords wilderness study area, Alaska, with a section on aeromagnetic data by Andrew Griscom: U.S. Geological Survey Bulletin 1403, 151 p.

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