Description
Joseph Heitmiller
Commodities
PrimaryZinc, Lead, Silver
SecondaryCopper, Gold
Commodity typeM
Deposit
Deposit typeporphyry copper
Deposit sizeY
WorkingsUnderground
Orebody formLENSES & SHOOTS (fissure veins)
Ore controlOre Contained In A Fault Fissure, Country Rock Replacement By Mineralization
Materials
Ore mineralsGalena, Pyrite, Sphalerite, Chalcopyrite, Tetrahedrite, Enargite, Polybasite
GangueCalcite
Geology
Host rockArgillite · Algonkian Belt Series, Metamorphosed Sediments
Associated rockDiorite,Trachyte · Diorite Intrusive (Sill);Trachyte Porphyry Dikes
StructureLewis Overthrust, Boulder Batholith, Local Faulting Has Displaced Diorite Sill And Fractured Ore Body
Tectonic settingCordilleran Miogeosyncline
AlterationSeriticization
Economic & production
Development statusPast Producer
First production1915
Discovery year1898
Identification
Deposit ID10071376
MRDS IDW014720
RegionNA
Data scoreB
Coordinates47.02314, -112.36262
References
PARDEE AND SCHRADER, 1933, METALLIFEROUS DEPOSITS OF THE GREATER HELENA MINING REGION, U.S. GEOLOGICAL SURVEY BULL. 842.ROBERTSON, F., 1956, GEOCHEMICAL PROSPECTING BY SOIL ANALYSES IN MT, MT BUREAU OF MINES & GEOLOGY BULL. 7.YOUNG, ET AL.,1962, Montana Bureau of Mines and Geology Bulletin 30, P.28CROWLEY,1961, Montana Bureau of Mines and Geology Bulletin 25, P.25GEACH, 1964, Montana Bureau of Mines and Geology Bulletin 46, P.20GEACH, 1966, Montana Bureau of Mines and Geology Bulletin 58, P.26REYNER AND TRAUERMAN, 1949, Montana Bureau of Mines and Geology Memoir 31, p.53.Miller, R.N., 1973, Unpublished Reprint, Geology of the Heddleston Cu-Mo Deposit L&Unpublished Montana Bureau of Mines and Geology File DataUSBM MINERALS YEARBOOKS