Commodities
PrimarySilver, Gold
SecondaryLead, Zinc, Copper
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formVEIN FILLING
Ore controlControlled By Fault Fissure (Strike Nw) At Contact Of Andesite And A Small Quartz Monzonite Stock
Materials
Ore mineralsGalena, Tetrahedrite
GanguePyrolusite, Rhodochrosite
Geology
Host rockVolcanic Rock (Aphanitic),Andesite
Associated rockVolcanic Rock (Aphanitic),Andesite · Andesite;Quartz Monzonite Stock
StructureBoulder Batholith, Lombard Overthrust, Vein Is Zone Of Shearing Containing Blocks Of Country Rock Along Fault Fissure
AlterationVein Continues Into Altered Andesite
Economic & production
Development statusPast Producer
First production1906
Identification
Deposit ID10071880
MRDS IDW015576
RegionNA
Data scoreB
Coordinates46.4149, -111.69698
References
EARLL, F. N., 1964, ECONOMIC GEOLOGY AND GEOCHEMICAL STUDY OF WINSTON MINING DISTRICT, BROADWATER COUNTY, MONTANA, MONT. BUREAU OF MINES AND GEOL. BULL. 41, P. 17-18, 44-46.KLEPPER, M. R., RUPPEL, E. T., FREEMAN, V. L., WEEKS, R. A., 1971, GEOLOGY AND MINERAL DEPOSITS, EAST FLANK OF THE ELKHORN MOUNTAINS, BROADWATER COUNTY, MONTANA, US GEOLOGICAL SURVEY PROF. PAPER 665 P. 41EARLL, F. N., 1964, WINSTON MINING DISTRICT