Montana · Madison County
Past Producer
Boulder Cobalt Mine
Madison County, Montana, United States
Gold
Silver
Copper
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USGS source ↗
Commodities
Primary
Gold
Secondary
Silver, Copper
Commodity type
M
Deposit
Deposit type
Vein
Deposit size
S
Materials
Ore minerals
Copper, Gold, Silver
Gangue
Pyrite, Siderite
Geology
Host rock
Gneiss
Economic & production
Development status
Past Producer
Identification
Deposit ID
10014512
MRDS ID
D011320
Region
NA
Data score
C
Coordinates
45.59796, -112.12198
References
USGS MF 1590-C, 1983, TABLE 1, FIG-1