Montana · Silver Bow County
Past Producer
Colusa Mine
Silver Bow County, Montana, United States
Copper
Silver
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USGS source ↗
Commodities
Primary
Copper
Secondary
Silver
Commodity type
M
Deposit
Deposit size
Y
Orebody form
THE VEIN CONTINUES W BEYOND THE GAMBETTA FAULT AS THE SHANNON VEIN. THE GRANITE ACCOMPANYING THE LODE IS GENERALLY WELL SERICITIZED AND PEPPERED WITH PYRITE
Materials
Ore minerals
Chalcocite, Enargite
Gangue
Limonite, Pyrite, Quartz
Geology
Host rock
Quartz Monzonite,Granite
Associated rock
Quartz Monzonite,Granite · Boulder Batholith
Structure
Boulder Batholith, N 65 E
Economic & production
Development status
Past Producer
Identification
Deposit ID
10019551
MRDS ID
DC10804
Alternate names
East Colusa Pit
Region
NA
Data score
B
Coordinates
46.02407, -112.50783
References
USGS PP 74, PL. X, P. 203.MBMG BULL 10, P. 60.USGS-USBM MINERAL YEARBOOKS 1955, 1956USGS-USBM MINERAL YEARBOOK; USGS PP 74