Montana · Madison County
Producer

Broadgauge - Tamarack Mines

Madison County, Montana, United States
GoldSilver
⌖ Show on mapUSGS source ↗
Description

Alfred Cisler

Commodities
PrimaryGold, Silver
Commodity typeM
Deposit
Deposit sizeY
WorkingsSurface/Underground
Ore controlImportant Vein Structure Lies Along Gneiss - Limestone Contact Or Within Adjacent Limestone; Faults Cut Veins
Materials
GanguePyrite
Geology
Host rockGneiss,Limestone · Cherry Creek Series, Limestone-Gneiss
Associated rockQuartz Monzonite · Quartz Monzonite Outlier Of Tobacco Root Batholith
StructureTobacco Root Batholith, Fractures Trending E-W, 30 E, (The Tamarack Vein), Regional Joint System Trends N30e, 45w (Broadgauge Vein)
AlterationSilicification, Ore Is Completely Oxidized
Economic & production
Development statusProducer
Discovery year1875
Identification
Deposit ID10070462
MRDS IDW013405
RegionNA
Data scoreB
Coordinates45.48101, -112.13115
References
MBMG MEM 9.USBM IC 6972.LAWSON, 1974, DIRECTORY OF MINING ENTERPRISES FOR 1974. MT. BUREAU OF MINES & GEOLOGY BULL. 95.MBMG MEM 41, P. 17.LORAIN, 1937, U. S. B. M. INF. CIRC. 6972.