Commodities
PrimaryCopper
SecondarySilver, Lead, Zinc
TertiaryGold
Commodity typeM
Deposit
Deposit typeContact Metamorphic
Deposit sizeY
WorkingsUnknown
Orebody formIRREGULAR
Ore controlContact Between Limestone And Diorite
Materials
Ore mineralsChrysocolla, Malachite
GanguePyrite
Geology
Host rockLimestone · Meagher Limestone-Limestone, Calcareous Shale
Associated rockDiorite · Turnley Ridge Stock-Quartz Diorite Porphyry
StructureNorth Plunging Anticline
Tectonic settingBulwer Mine On East Limb Of Anticline Adjacent To Quartz Diorite
AlterationBrecciation, Thermal Metamorphism-Development Of Calc-Silicate Minerals-Clay And Sericite
Economic & production
Development statusPast Producer
First production1914
Identification
Deposit ID10042786
MRDS IDM060814
Alternate namesElkhorn-Bulwer, Boulaway
RegionNA
Data scoreB
Coordinates46.25823, -111.94254
References
KLEPPER, M.R., WEEKS, R.A., AND RUPPEL, E.T., 1957, GEOLOGY OF THE SOUTHERN ELKHORN MOUNTAINS, JEFFERSON AND BROADWATER COUNTIES, MONTANA: U.S. GEOL. PROF. PAPER 292, P. 70ROBY, R.N., ACKERMAN, W.C., FULKERSON, F.B., AND CROWLEY, F.A., 1960, MINES AND MINERAL DEPOSITS (EXCEPT FUELS) JEFFERSON COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOL. BULL. 16, P. 58USGS PROF. PAPER 292, P. 70