Description
Julian E. Strawn
Commodities
PrimaryGold, Silver
Commodity typeM
Deposit
Deposit typeReplacement
Deposit sizeS
WorkingsUnderground
Orebody formIRREGULAR
Ore controlLimestone Bed, Fault Zone, Ore Is Associated With The Basic Intrusives.
Materials
GangueHematite, Quartz, Stibnite
Geology
Host rockDolomite · Meagher;Pony Gneiss
Associated rockBasalt · Altered Basic Intrusive
StructureBismark Fault Trends N45 To 50w, Dipping Near Vertical., Post-Ore Faults, Up On East. Strawn Fault Trends N10e, 80w.
Tectonic settingTobacco Root Batholith, West Margin
AlterationBrecciation, Silicification, Oxidation
Economic & production
Development statusPast Producer
Production years1921-1942
Discovery year1921
Identification
Deposit ID10019752
MRDS IDDC11365
RegionNA
Data scoreB
Coordinates45.66657, -112.13226
References
MBMG MEM 9, P. 38.USBM IC 6972, P. 70.REYNER, M.L., 1950, DIRECTORY OF MONTANA MINING PROPERTIES, 1949: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 31, P. 71.REID, R.P., 1957, BEDROCK GEOLOGY OF THE NORTH END OF THE TOBACCO ROOT MOUNTAINS, MADISON COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 36, 25 P.HOGBERG, R.K., PRIVATE COMPANY REPORT, 19631957 GEOLMAP MBMG MEMOIR 36HOGBERG, 1963,PRIVATE CO. REPORT