Montana · Lewis and Clark County
Past Producer

Lee Mountain

Lewis and Clark County, Montana, United States
SilverGoldLeadZincArsenicAntimony
⌖ Show on mapUSGS source ↗
Description

John Caplice

Commodities
PrimarySilver, Gold
SecondaryLead, Zinc
TertiaryArsenic, Antimony
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formIRREGULAR
Ore controlLee Mountain-Valley Forge Shear Zone
Materials
Ore mineralsGalena, Gold, Sphalerite, Tetrahedrite
GanguePyrite, Tourmaline
Geology
Host rockQuartz Monzonite
Associated rockQuartz Monzonite · Butte Quartz Monzonite(Boulder Ratholith)
StructureBoulder Batholith, Postmineral North - South Faults Dipping 80 Deg W Displacement Horizontal Offset 20 Feet Each, To Westlee Mountain-Valley Forge Shear Zone
AlterationIntense Sericitization Of Quartz - Monzonite
Economic & production
Development statusPast Producer
First production1864
Discovery year1864
Identification
Deposit ID10105989
MRDS IDW026541
RegionNA
Data scoreB
Coordinates46.48518, -112.25089
References
USGS PP 428, P. 55USGS BULL 842, P. 255-57.MBMG MEM 31, P. 56USGS BULL 842, P. 83-84USGS PP 428, P. 55.