Commodities
PrimaryTalc-Soapstone
Commodity typeN
Deposit
Deposit typeReplacement
Deposit sizeU
WorkingsSurface
Orebody formPOD
Ore controlLithology Of Host Rock (Dolomitic Marble)
Materials
Ore mineralsChlorite, Talc
Geology
Host rockMarble · Dolomitic Marble;Quartzofeldspathic Gneiss
StructureFolds In Metamorphic Rocks Faults Of Minor Displacement
Tectonic settingPrecambrian Basement
Economic & production
Development statusProducer
First production1942
Identification
Deposit ID10070448
MRDS IDW013390
Alternate namesJohnny Gulch Talc, Mountain Talc, Cameron
RegionNA
Data scoreB
Coordinates45.07658, -111.73141
References
JAMES, H. L., 1956, JOHNNY GULCH TALC DEPOSIT, MADISON COUNTY, MONTANA: OPEN - FILE REPORT USGS 8 P.PERRY, E. S., 1948, TALC, GRAPHITE, VERMICULITE, AND ASBESTOS IN MONTANA: MONT. BUREAU OF MINES AND GEOL. MEM. 27.OLSON, R. H., (IN PREP), THE GEOLOGY OF MONTANA TALC DEPOSITS: TO BE PUBLISHED BY THE MBMG IN THE PROCEEDINGS VOLUME OF THE ELEVENTH FORUM ON THE GEOLOGY OF INDUSTRIAL MINERALSCONSV. DIV. COMP. DATE, 01-15-1969.INDUSTRIAL MINERALS, 1994, WORLD OF MINERALS, LUZENAC ACQUIRES MONTANA TALC: INDUSTRIAL MINERALS, NO. 322, P. 15.1943 GEOLMAP JAMES OPEN - FILE REPORT1943 USBM WAR MINERALS REPORT 178PROFESSIONAL OPINION