Commodities
PrimaryTungsten
SecondaryCopper
TertiaryMolybdenum
Commodity typeM
Deposit
Deposit typeContact Metasomatic
Model42: W skarn
Deposit sizeN
WorkingsSurface/Underground
Orebody formTABULAR AND IRREGULAR
Materials
Ore mineralsChalcopyrite, Powellite, Scheelite, Bornite, Covellite, Malachite, Pyrrhotite
GangueEpidote, Garnet, Quartz, Magnetite, Biotite, Pyrite
Geology
Host rockShale,Limestone · Amsden Formation
Associated rockGranite,Quartz Monzonite,Diorite
StructureContact Metamorphic Zone
Tectonic settingMesozoic-Cenozoic Orogenic Belt
Economic & production
Development statusPast Producer
First production1953
Last production1958
Discovery year1941
Identification
Deposit ID10055833
MRDS IDSP00032
Alternate namesIvanhoe, Lost Creek, Lentung, Browns Lake Mine
RegionNA
Data scoreA
Coordinates45.521, -112.836
References
PATTEE, E.C., 1960, TUNGSTEN RESOURCES OF MONTANA: DEPOSITS OF THE MOUNT TORREY BATHOLITH BEAVERHEAD COUNTY, U.S. BUREAU OF MINES, REPORT OF INVESTIGATION 5552, 41P.MYERS, W.B., 1952, GEOLOGY AND MINERAL DEPOSITS OF THE NORTHWEST QUARTER OF WILLIS QUADRANGLE AND ADJACENT BROWN'S LAKE AREA; BEAVERHEAD COUNTY, MONTANA, U.S. GEOLOGICAL SURVEY, OPEN FILE REPORT, P. 18.GEACH, R.D., 1972, MINES AND MINERAL DEPOSITS (EXCEPT FUELS), BEAVERHEAD COUNTY, MONTANA, MONTANA BUREAU OF MINES AND GEOLOGY, BULLETIN 85, 194 P.DMEA 1951XDMEA 2292DMA-148DMEA FILESINTERNATIONAL STRATEGIC MINERALS INVENTORY RECORD W109