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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Unnamed (south of lower Windy Creek) MRDS details
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: Malachite
Ore: Chalcopyrite
Ore: Azurite
Gangue: Quartz
Gangue: Epidote
Comments
Comment (Commodity): Gangue = iron carbonate
Comment (Geology): Age = Triassic or younger.
Comment (Reference): Primary Reference = Saunders, 1961
Comment (Exploration): Status = Inactive
Comment (Deposit): Model Name = Hydrothermally altered shear zone.
Comment (Geology): Geologic Description = The area of this occurrence is underlain by 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). The deposit is in a hydrothermally altered shear zone in greenstone, and consists of quartz, epidote, chalcopyrite, and an iron carbonate mineral. Weathering produces malachite- and azurite-coated float and encrustations.
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.
Reference (Deposit): Saunders, R.H., 1961, Susitna-MacClaren area: Alaska Division of Mines and Mineral Report for the year 1961, 40 p.
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