The Old Harbor 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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Old Harbor MRDS details
Site Name
Primary: Old Harbor
Commodity
Primary: Copper
Location
State: Alaska
District: Kodiak
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
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
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Pyrite
Ore: Pyrrhotite
Comments
Comment (Deposit): Other Comments = Site is on land conveyed to the Koniag Corporation.
Comment (Reference): Primary Reference = Berg and Cobb, 1967
Comment (Workings): Workings / Exploration = Assays range from 0.09 percent copper in disseminated material to 5.52 percent copper in one chalcopyrite-rich mass. The shear zone was prospected by 3 short adits prior to WW II.
Comment (Exploration): Status = Inactive
Comment (Deposit): Model Name = Shear zone with minor copper values.
Comment (Geology): Geologic Description = A sulfide-bearing shear zone is present along a footwall contact between a gabbro sill and Cretaceous metasedimentary rock. The shear zone is 10 to 20 feet in width and extends for approximately 2500 feet. Pyrite, pyrrhotite, and sparse chalcopyrite are disseminated in the shear zone. In addition, several sulfide masses containing abundant chalcopyrite occur about 1250 feet apart. Assays range from 0.9 percent copper in the disseminated mineralization to 5.52 percent in the chalcopyrite-rich zones (Berg and Cobb, 1967, p. 87).
Comment (Geology): Age = Cretaceous or younger
References
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Kodiak quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-460, 1 map sheet, scale 1:250,000.
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.
Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Afognak, Karluk, Kodiak, and Trinity Islands quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-860, 49 p.
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