Commodities
PrimaryTungsten, Copper
SecondaryLead, Silver, Gold
Commodity typeM
Deposit
Deposit sizeS
Orebody formIRREGULAR
Ore controlTactite Zone Between Limestone And Intrusive Rock.
Materials
Ore mineralsChalcopyrite, Gold, Scheelite
GangueCalcite, Chlorite, Epidote, Garnet, Magnetite, Quartz
Geology
Host rockSkarn (Tactite),Limestone · Mission Canyon Limestone
Associated rockQuartz Monzonite · Butte Quartz Monzonite (Boulder Batholith)
Economic & production
Development statusPast Producer
First production1942
Discovery year1940
Identification
Deposit ID10103878
MRDS IDM060193
Alternate namesStrategic, Arnold Bielenberg, Shamrock, Snowbird, Montana Old Lady Smith, Friday, Boulder Ore
RegionNA
Data scoreB
Coordinates46.67768, -112.46812
References
USGS BULL 842, P. 29-30, 35.MBMG BULL 98, P. 27, 31, 62.USBM R1 6334, P. 48, 49, 58.KNOPF, A., 1942 WRITTEN COMM.(STRATEGIC LODE)MBMG BULL 98, P. 62; USBM R1 6334.DMEA FILES