Montana · Jefferson County
Past Producer

Boulder Chief Mine

Jefferson County, Montana, United States
LeadSilverCopperZincArsenicUranium
⌖ Show on mapUSGS source ↗
Commodities
PrimaryLead, Silver
SecondaryCopper, Zinc
TertiaryArsenic, Uranium
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Materials
Ore mineralsGalena, Sphalerite
GanguePyrite, Quartz
Geology
Host rockQuartz Monzonite,Andesite
Associated rockQuartz Monzonite,Andesite · Butte Quartz Monzonite(Boulder Batholith);Elkhorn Volcanics
StructureBoulder Batholith
Economic & production
Development statusPast Producer
Identification
Deposit ID10019379
MRDS IDDC09893
RegionNA
Data scoreB
Coordinates46.33046, -112.21032
References
MBMG BULL 16, P. 24.USGS PP 428, P. 95.USGS CIRC 277, P. 7.