Montana · Jefferson County
Past Producer
Big Four
Jefferson County, Montana, United States
Lead
Zinc
Silver
Gold
Copper
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USGS source ↗
Commodities
Primary
Lead, Zinc
Secondary
Silver, Gold, Copper
Commodity type
M
Deposit
Deposit size
S
Materials
Ore minerals
Chalcopyrite, Galena, Gold, Sphalerite
Gangue
Pyrite, Quartz
Geology
Host rock
Quartz Monzonite
Associated rock
Quartz Monzonite · Butte Quartz Monzonite (Boulder Batholith)
Structure
Boulder Batholith
Economic & production
Development status
Past Producer
Identification
Deposit ID
10102041
MRDS ID
DC11622
Region
NA
Data score
C
Coordinates
46.10434, -112.18505
References
MBMG BULL 16, P. 38MBMG BULL 16.