Unnamed (south of lower Windy Creek)

The Unnamed (south of lower 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

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Site Name

Primary: Unnamed (south of lower 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 of greenstone.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Azurite
Ore: Bornite
Ore: Chalcocite
Ore: Chalcopyrite
Ore: Covellite
Ore: Copper
Gangue: Epidote
Gangue: Quartz
Gangue: Siderite

Comments

Comment (Reference): Primary Reference = Glavinovich, 1967

Comment (Workings): Workings / Exploration = Surface chip sampling only.

Comment (Geology): Geologic Description = The general area of this occurrence is underlain by the Middle or Upper Triassic Nikolai Greenstone, which consists of massive, subaerial and submarine basalt flows and minor interbedded volcaniclastic sedimentary rocks, aquagene and epiclastic tuff, breccia, argillite, and radiolarian chert (Nokleberg and others, 1992). The occurrence is in greenstone and consists of a small, hydrothermally altered shear zone containing epidote, copper sulfide minerals, and possibly native copper and an iron carbonate mineral. Weathering locally produces malachite and azurite-coated float and encrustations.

Comment (Deposit): Model Name = Hydrothermally altered shear zone.

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Triassic or younger.

References

Reference (Deposit): Saunders, R.H., 1961, Susitna-MacClaren area: Alaska Division of Mines and Mineral Report for the year 1961, 40 p.

Reference (Deposit): Glavinovich, P.S., 1967, Trace element copper distribution and areal geology in a portion of the Clearwater Mountains, Alaska: University of Alaska Minerals Industry Research Laboratory, Report 10, 55 p.

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.

Reference (Deposit): Kaufman, M.A., 1964, Two new occurrences of ore minerals in the Denali area (Healy A-1 and Mt. Hayes B-6): Alaska Territorial Department of Mines Prospect Evaluation 67-4, 5 p.

Reference (Deposit): Smith, T.E., 1981, Geology of the Clearwater Mountains, south-central Alaska: Alaska Division of Geological &Geophysical Surveys Geologic Report 60, 72 p., 3 sheets, scale 1:63,360.

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