The Unnamed (south wall of valley 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
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Unnamed (south wall of valley of Windy Creek) MRDS details
Site Name
Primary: Unnamed (south wall of valley 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 of greenstone.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Malachite
Ore: Chalcopyrite
Ore: Azurite
Gangue: Epidote
Comments
Comment (Reference): Primary Reference = Glavinovich, 1967
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 small mineral occurrence consists of a small shear zone along which hydrothermal alteration has produced epidote, chalcopyrite, and iron carbonate minerals. Weathering produces malachite- and azurite-coated float and encrustations. This small mineral occurrence is one of many similar deposits in the Nikolai Greenstone. Most of these occurrences are part of an east-northeast trending fault zone several miles wide.
Comment (Exploration): Status = Inactive
Comment (Deposit): Other Comments = This occurrence is about 0.25 miles southeast of HE187.
Comment (Deposit): Model Name = Hydrothermally altered shear zone.
Comment (Commodity): Gangue = iron carbonate
Comment (Geology): Age = Triassic or younger.
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): 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.
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.
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