Montana · Madison County
Occurrence

Keystone

Madison County, Montana, United States
TungstenAntimonyCopper
⌖ Show on mapUSGS source ↗
Commodities
PrimaryTungsten
TertiaryAntimony, Copper
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeN
Ore controlTobacco Root Batholith Intrusion Into Prec Pre-Belt Gneiss Series
Materials
Ore mineralsHuebnerite, Tetrahedrite
Geology
Host rockQuartz Monzonite · Pre Belt Pony-Cherry Creek Series
Associated rockQuartz Monzonite · Tobacco Root Batholith-Quartz Monzonite
StructureNw-Trending Bismark Fault
Economic & production
Development statusOccurrence
Identification
Deposit ID10094322
MRDS IDD004285
RegionNA
Data scoreB
Coordinates45.57379, -111.95975
References
WINCHELL, 1916, MINING DISTRICTS-DILLON QUAD, MONT, USGS BULL 574 P. 125TANSLEY AND HART, 1933, GEOL. RECON-TOBACCO ROOT MTN, MADISON CO., MONT, MBMG MEM 9, P. 32EYDE, 1958, POTOSI TUNGSTEN DIST, MADISON CO, MONT, MBMG. INF. CIRC. 21, P. 431916 COMPILE WINCHELL, BULL 5741933 RECON MBMG MEM 91958 COMPILE MBMG INF CIR. 21TANSLEY, ET AL, P. 26.