Unnamed occurrence (Inmachuk River)

The Unnamed occurrence (Inmachuk River) is a lead and silver 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 occurrence (Inmachuk River)

Commodity

Primary: Lead
Primary: Silver

Location

State: Alaska
District: Fairhaven

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: A gossanous, limonitic cap is reportedly developed.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Galena
Gangue: Limonite
Gangue: Magnetite
Gangue: Pyrite

Comments

Comment (Workings): Workings / Exploration = Anderson (1947) reports that some development work has taken place; surface prospecting pits are most likely.

Comment (Reference): Primary Reference = Cobb, 1975 (OFR 75-429)

Comment (Geology): Geologic Description = Mertie (1919) described a sample said to be from this occurrence as containing galena, magnetite, limonite, and pyrite. The galena was supposedly argentiferous. The gossanous character of the occurrence was reported by Anderson (1947), but its location and nature have not been confirmed. Bedrock of the area is a metasedimentary schist and marble sequence of Lower Paleozoic age (Till and others, 1986).

Comment (Deposit): Model Name = Galena in metasedimentary rocks; epigenetic (?); stratiform (?)

Comment (Deposit): Other Comments = All references to this site are from secondary sources and the site was not visited by USGS personnel during 1982 field work in the area.

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Unknown

References

Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.

Reference (Deposit): Mertie, J.B., Jr., 1918, Lode mining and prospecting on Seward Peninsula: U.S. Geological Survey Bulletin 662-H, p. 425-449.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Bendeleben quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-417, 1 sheet, scale 1:250,000.

Reference (Deposit): Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p.

Reference (Deposit): Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bendeleben quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-429, 123 p.

The Top Ten Gold Producing States

These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.