Montana · Granite County
Past Producer
Sierra Mine
Granite County, Montana, United States
Copper
Silver
Gold
Antimony
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USGS source ↗
Commodities
Primary
Copper
Secondary
Silver, Gold
Tertiary
Antimony
Commodity type
M
Deposit
Deposit size
S
Workings
Underground
Materials
Ore minerals
Gold, Tetrahedrite
Gangue
Ankerite, Calcite, Limonite, Pyrite, Quartz
Geology
Host rock
Diorite
Associated rock
Diorite · Garnet Stock
Structure
Bearmouth Overthrust, Deep Creek Anticline, Garnet Stock
Alteration
Oxidation
Economic & production
Development status
Past Producer
Identification
Deposit ID
10019721
MRDS ID
DC11227
Region
NA
Data score
B
Coordinates
46.82933, -113.33982
References
USGS BULL 660, P. 171-82, 187USGS BULL 660, P. 187