Unnamed (southwest head of Wood River)

The Unnamed (southwest head of Wood River) is a gold 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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Site Name

Primary: Unnamed (southwest head of Wood River)

Commodity

Primary: Gold
Secondary: Copper

Location

State: Alaska
District: Bonnifield

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: The hydrothermal alteration is not described.

Rocks

Role: Host
Age Type: Host Rock
Age Young: Triassic

Analytical Data

Not available

Materials

Ore: Malachite
Ore: Gold

Comments

Comment (Geology): Age = The gabbroic hostrocks are undated, but may be Triassic.

Comment (Geology): Age = Host rock is Triassic.

Comment (Geology): Geologic Description = The country rocks in the area of this occurrence are the Devonian Yanert Fork sequence, an intensely deformed, thick, marine sequence dominantly of metasedimentary and metavolcanic rocks. The bulk of sequence is dark-gray to black carbonaceous shale with interbedded lithic sandstone and siltstone (Wilson and others, 1998). The occurrence is in hydrothermally altered gabbroic sills and dikes that cut the metasedimentary rocks. Samples of the altered zones show elevated gold and copper values. One sample contained 0.5 ppm gold (Sherwood and others, 1976).

Comment (Reference): Primary Reference = Sherwood and others, 1976

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Wilson, F.H., Dover, J.H., Bradley, D.C., Weber, F.R., Bundtzen, T.K., and Haeussler, P.J., 1998, Geologic map of central (interior) Alaska: U.S. Geological Survey Open-File Report 98-133, 17 p., 2 sheetsm, scale 1:500,000.

Reference (Deposit): Sherwood, K.W., Craddock, Campbell, and Smith, T.E., 1976, Mineral occurrences in the upper Wood River, Edgar Creek, and West Fork Glacier areas, central Alaska Range: Alaska Division of Geological "&" Geophysical Surveys Special Report 14, 13 p.

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