The Big Horn 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
Satelite View
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.
Big Horn MRDS details
Site Name
Primary: Big Horn
Secondary: Finch
Commodity
Primary: Copper
Location
State: Alaska
District: Chistochina
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
Model Name: Basaltic Cu (BC name is Volcanic redbed Cu)
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Greenstone
Role: Associated
Age Type: Associated Rock
Age Young: Late Triassic
Name: Greenstone
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Triassic
Analytical Data
Not available
Materials
Ore: Malachite
Ore: Bornite
Ore: Chalcocite
Comments
Comment (Workings): Workings / Exploration = Type of workings: surface and underground. Several adits and widespread surficial workings.
Comment (Reference): Primary Reference = Moffit and Mertie, 1923
Comment (Deposit): Model Name = Basaltic Cu
Comment (Geology): Geologic Description = Bornite-, chalcocite-, and malachite-bearing veins and pods in strongly faulted Triassic Nikolai Greenstone.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Moffit, F.H., and Mertie, J.B., Jr., 1923, The Kotsina-Kuskulana district, Alaska: U.S. Geological Survey Bulletin 745, 149 p.
Reference (Deposit): Van Alstine, R.E., and Black, R.F., 1946, Copper deposits of the Kotsina-Kuskulana district, Alaska: U.S. Geological Survey Bulletin 947-G, p. 121-141.
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): MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, scale 1:250,000.
Reference (Deposit): Moffit, F.H., 1918, Mining in the lower Copper River basin: U.S. Geological Survey Bulletin 662-C, p. 155-182.
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
