The Green Butte is a copper and silver 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.
Green Butte MRDS details
Site Name
Primary: Green Butte
Commodity
Primary: Copper
Primary: Silver
Location
State: Alaska
District: Nizina
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
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: Host Rock Unit
Age Young: Late Triassic
Name: Greenstone
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic
Name: Greenstone
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Triassic
Name: Greenstone
Role: Associated
Age Type: Associated Rock
Age Young: Late Triassic
Analytical Data
Not available
Materials
Ore: Malachite
Ore: Covellite
Ore: Chalcocite
Ore: Bornite
Ore: Azurite
Gangue: Dolomite
Gangue: Calcite
Comments
Comment (Workings): Workings / Exploration = About 11,000 ft of drifts and crosscuts on 8 levels, 1,500 ft of inclines and 2,500 ft of raises, winzes and stopes. In 1943, 500 ft level and lower levels were flooded and considerable portions of 100 ft and 400 ft levels caved.
Comment (Deposit): Model Name = Basaltic Cu
Comment (Geology): Geologic Description = Veinlike replacement lodes and cavity fillings forming discontinuous masses of chalcocite and other copper minerals up to 4 ft thick in lower part of Triassic Chitistone Limestone, near contact with underlying Triassic Nikolai Greenstone, which is separated from limestone by a thin bed of shale.
Comment (Reference): Primary Reference = Miller, 1946
Comment (Production): Production Notes = Reported to have produced about 1,500 tons of high-grade ore that contained about 1,200 pounds of copper and 10 ounces of silver per ton.
Comment (Exploration): Status = Inactive
References
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): Miller, D.J., 1946, Copper deposits of the Nizina district, Alaska: U.S. Geological Survey Bulletin 947F, p. 93-120.
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): MacKevett, E.M., Jr., 1974, Geologic map of the McCarthy B-5 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1146, scale 1:63,360.
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.
