Unnamed (headwall cirque of Windy Creek)

The Unnamed (headwall cirque of Windy 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

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 (headwall cirque of Windy Creek)

Commodity

Primary: Copper

Location

State: Alaska
District: Valdez Creek

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: Propylitic alteration (epidote).

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcocite
Gangue: Epidote

Comments

Comment (Deposit): Other Comments = Outcrop source of chalcocite has not been found.

Comment (Geology): Geologic Description = The bedrock in the area of this occurrence is mainly the Middle or Upper Triassic Nikolai Greenstone, a thick sequence of subaerial and submarine basalt flows and minor interbedded volcaniclastic sedimentary rocks, aquagene and epiclastic tuff, breccia, argillite, and radiolarian chert (Nokleberg and others, 1992). This occurrence is a dome-shaped epidotized zone exposed above the bergschrund on the headwall of the cirque. The altered area is several hundred feet across. The occurrence is float on the moraine and consist of slabs of chalcocite as large as 15 inches by 10 inches by 2 to 3 inches (D. L. Stevens, personal observation).

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Triassic or younger.

Comment (Reference): Primary Reference = This record

References

Reference (Deposit): Nokleberg, W.J., and others, 1992, Circum-North Pacific terrane map, in Tracy, K.V., Anker, E. M., Ryan, C., Hoffman, V. , eds., International conference on Arctic margins, p. 44.

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