Montana · Jefferson County
Past Producer
Helena-Jefferson Mine
Jefferson County, Montana, United States
Silver
Lead
Zinc
Copper
Molybdenum
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USGS source ↗
Commodities
Primary
Silver, Lead, Zinc
Secondary
Copper
Tertiary
Molybdenum
Commodity type
M
Deposit
Deposit size
S
Materials
Ore minerals
Alabandite, Chalcopyrite, Galena, Molybdenite, Rhodonite, Sphalerite
Gangue
Calcite, Pyrite, Quartz, Rhodochrosite
Geology
Host rock
Quartz Monzonite,Granite
Associated rock
Quartz Monzonite,Granite · Boulder Batholith
Structure
Boulder Batholith
Economic & production
Development status
Past Producer
First production
1928
Last production
1928
Identification
Deposit ID
10019594
MRDS ID
DC10906
Region
NA
Data score
B
Coordinates
46.35684, -112.04671
References
USGS PP 428, PL. 1MBMG BULL-16, P. 51, 109.USGS BULL 842, P. 238-40.MBMG BULL 16, P. 109.