Montana · Silver Bow County
Past Producer
Gagnon Pit
Silver Bow County, Montana, United States
Copper
Silver
Gold
Zinc
Arsenic
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USGS source ↗
Commodities
Primary
Copper, Silver
Secondary
Gold, Zinc
Tertiary
Arsenic
Commodity type
M
Deposit
Deposit size
S
Workings
Unknown
Materials
Ore minerals
Bornite, Enargite, Gold, Sphalerite
Gangue
Pyrite, Quartz, Rhodochrosite
Geology
Host rock
Quartz Monzonite
Associated rock
Quartz Monzonite · Butte Quartz Monzonite (Boulder Batholith)
Structure
Boulder Batholith
Economic & production
Development status
Past Producer
Last production
1957
Identification
Deposit ID
10101996
MRDS ID
DC10859
Region
NA
Data score
B
Coordinates
46.01684, -112.54256
References
USGS PP 748 P. 134-36, 141, 149.MBMG BULL 10, P. 61USGS-USBM MINERAL YEARBOOKS 1922, 1955, 1956