The Unnamed (west of Middle Fork Chandalar River) 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 (west of Middle Fork Chandalar River) MRDS details
Site Name
Primary: Unnamed (west of Middle Fork Chandalar River)
Commodity
Primary: Copper
Secondary: Lead
Location
State: Alaska
District: Chandalar
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
Not available
Rocks
Name: Chert
Role: Host
Age Type: Host Rock Unit
Age Young: Late Devonian
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Galena
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Reference): Primary Reference = Menzie and others, 1985
Comment (Deposit): Other Comments = Described as being a stratabound vein in Menzie and others (1985); USGS field station 76ARR408.
Comment (Geology): Geologic Description = Occurrence is described only as black chert, at the contact between Devonian Skajit Limestone and overlying Beaucoup Formation, that contains a pyrite- and chalcopyrite-bearing quartz vein (Menzie and others, 1985). USBM information from a location thought to correspond to this prospect suggests galena is also present (Barker, 1978). No other descriptive information is available.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Barker, J.C., 1978, Mineral Investigations of certain lands in the eastern Brooks Range: a summary report: US Bureau of Mines Open-File No. 63-78
Reference (Deposit): Menzie, W.D., Reiser, H.N., Brosgi, W.P., and Detterman, R.L., 1985, Map showing distribution of mineral resources (excepting oil and gas) in the Philip Smith Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Investigations Map MF-879-C, 2 sheets, scale 1:250,000.
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