Commodities
PrimarySilver, Lead, Zinc
SecondaryGold
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeY
WorkingsUnderground
Orebody formTABULAR, LENS
Ore controlLittle Olga Stock; Deposit Is In North-Trending Zone Of Stocks
Materials
Ore mineralsChalcopyrite, Galena, Sphalerite, Stephanite, Tetrahedrite
Geology
Host rockDiorite
Associated rockDiorite,Andesite · Elkhorn Volcanics, Andesite;Little Olga Stock, Granodiorite
StructureBoulder Batholith, Lombard Overthrust, Little Olga Stock
Economic & production
Development statusPast Producer
First production1885
Identification
Deposit ID10105716
MRDS IDW014666
Alternate namesLittle Olga
RegionNA
Data scoreB
Coordinates46.39073, -111.71337
References
EARLL, F. N., 1964, ECONOMIC GEOLOGY AND GEOCHEMICAL STUDY OF WINSTON MINING DISTRICT, BROADWATER CO., MONTANA: MONTANA BUREAU OF MINES GEOL. BULL. 41PARDEE, J. T., AND SCHRADER, F. C., 1933, METALLIFEROUS DEPOSITS OF THE GREATER HELENA MINING REGION, MONTANA: U.S. GEOL. SURV. BULL. 842REED, G. C., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS), BROADWATER CO., MONTANA: U.S. BUREAU OF MINES INF. CIRC. 7592STONE, R. W., 1911, GEOLOGIC RELATIONS OF ORE DEPOSITS IN THE ELKHORN MOUNTAINS, MONTANA: U.S. GEOL. SURV. BULL. 4701933 GEOLMAP PARDEE AND SCHRADE