The Unnamed (northeast wall of Eldridge Glacier) 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 (northeast wall of Eldridge Glacier) MRDS details
Site Name
Primary: Unnamed (northeast wall of Eldridge Glacier)
Commodity
Primary: Copper
Secondary: Silver
Secondary: Nickel
Secondary: Gold
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
Model Name: Massive sulfide, Cyprus
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Malachite
Ore: Pyrite
Comments
Comment (Deposit): Model Name = Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Comment (Geology): Age = Probably Late Devonian, remobilized in Late Mesozoic or Tertiary.
Comment (Geology): Geologic Description = The country rocks in the area of this occurrence are a tectonically intermixed assemblage of Upper Devonian serpentinite, basalt, chert, and gabbro. The occurrence consists of massive pyrite and chalcopyrite in irregular and veinlike masses in serpentinite. Some of the chalcopyrite is oxidized to malachite. Rock samples contained 15 ppm silver, 0.1 ppm gold, 50 ppm nickel and 7.5% copper (Hawley and Clark, 1974). The sulfide minerals herein are assumed to be remobilized syngenetic magmatic segregations in the mafic host rocks.
Comment (Workings): Workings / Exploration = Rock samples contained 15 ppm silver, 0.1 ppm gold, 50 ppm nickel and 7.5% copper (Hawley and Clark, 1974).
Comment (Reference): Primary Reference = Cobb, 1978 (OFR 78-1062)
Comment (Exploration): Status = Probably inactive
References
Reference (Deposit): Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-1062, 113 p.
Reference (Deposit): Clark, A.L., and Cobb, E.H., 1972, Metallic mineral resources map of the Healy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-394, 1 sheet, scale 1:250,000.
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