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
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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.
Unnamed (headwall cirque of Windy Creek) MRDS details
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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