Montana · Madison County
Occurrence

Demos Group

Madison County, Montana, United States
SilverTungstenManganeseAntimonyIronCopperLead
⌖ Show on mapUSGS source ↗
Commodities
PrimarySilver, Tungsten
TertiaryManganese, Antimony, Iron, Copper, Lead
Commodity typeM
Deposit
Deposit sizeN
Orebody formLENSES
Ore controlQuart Monzonite Intrusion Into Prec, Pre-Belt Gneiss Series
Materials
Ore mineralsAnglesite, Cerargyrite, Huebnerite, Tetrahedrite
GangueChalcopyrite, Fluorite, Pyrite
Geology
Host rockQuartz Monzonite
StructureNw Bismark Fault
Economic & production
Development statusOccurrence
Discovery year1906
Identification
Deposit ID10019944
MRDS IDDC12012
Alternate namesMargie, Roger, Lucky Joe, Rockefeller, Independent
RegionNA
Data scoreB
Coordinates45.57546, -111.97586
References
EYDE, TH, 1958, POTOSI TUNGSTEN DIST, MADISON CO, MONT, MONT. BUREAU OF MINES & GEOL. INF. CIR. 21, P. 39TANSLEY, HART, 1933, GEOL RECON. OF THE TABACCO ROOT MTNS, MADISON, CO, MONT, MONT. B. MINES AND GEOL. MEM. 9, P. 32CONSV. COMPL. DATE, 12-09-19711906 DIREXPL SEN. CLARK-INT. OF BUTTE HIRED MINING EXAMINER1937 DIREXPL J. NORTON-METALLURGICAL AND MINING ENGINEER, BUTTEFOREST SURUSY ASSAYS (FSROI-00128)-(FSROI-00131)1958 COMPILE M.BMG. INF CIRC. 21