Description
Polaris Mining Co.
Commodities
PrimarySilver
SecondaryCopper
TertiaryAntimony, Nickel, Cobalt, Lead, Zinc
Commodity typeM
Deposit
Deposit typeHYDROTHERMAL VEIN AND REPLACEMENT
Model{85: Polymetallic veins}
Deposit sizeM
WorkingsUnderground
Orebody formPINCH AND SWELL
Ore control"Sunshine-Polaris Fault", "Silver Summit Fault", "Veins narrow as they approach, and pinch out as they enter, shale horizons."
Materials
Ore mineralsTetrahedrite, Chalcopyrite
GangueAnkerite, Pyrite, Siderite, Quartz, Arsenopyrite
Geology
Host rockQuartzite · St. Regis Formation
Associated rockMeta-Argillite · St. Regis Formation
Structure"Silver Syndicate Fault (N45W 70SW) shows left-lateral movement.", "Polaris Fault (N50W) 50-65SW shows right-lateral movement.", "Big Creek Anticline - ore deposit within overturned north limb."
Tectonic setting"Belt Basin"
Alteration"Bleaching of hematite-bearing quartzite around some veins.", "Disseminated carbonates form halos around veins."
Economic & production
Development statusPast Producer
Production years1948-1969
First production1948
Last production1969
Discovery year1948
Identification
Deposit ID10067850
MRDS IDW000720
Alternate namesConsolidated Silver, Coeur d'Alene Jumbo
RegionNA
Data scoreA
Coordinates47.50177, -116.04463
References
{Deposit:: FRYKLUND, V.C., AND HUTCHINSON, M.W., 1954, THE OCCURRENCE OF COBALT AND NICKEL IN THE SILVER SUMMIT MINE, COEUR D'ALENE DISTRICT, IDAHO: ECONOMIC GEOLOGY, V. 49, NO.7, P. 753-758.}{Deposit:: VHAY, J.S., 1964, COBALT AND NICKEL, IN MINERAL AND WATER RESOURCES OF IDAHO:U.S. CONG., 88TH, 2ND SESS., P.66-68.}{Deposit:: FRYKLUND, V.C., JR., 1964, ORE DEPOSITS OF THE COEURD'ALENE DISTRICT, SHOSHONE COUNTY, IDAHO: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 445, 103 P.}{Deposit:: GRISMER, G.M., AND HUNDHAUSEN, R.J., 1948, METHODS AND COSTS OF SINKING THE SILVER SUMMIT SHAFT, WALLACE, IDAHO, USING A MECHANICAL MUCKING MACHINE: U.S. BUREAU OF MINES INFORMATION CIRCULAR 7425, 12 P.}{Deposit:: Dahl, Mary Katherine, 1981, Structural and stratigraphic control of ore through the Crescent, Sunshine, Silver Summit, Coeur and Galena mines, Coeur d'Alene mining district, Idaho: Moscow, Univeristy of Idaho, MS thesis, 97 p.}{Production:: Mitchell, V.E., and Bennett, E.H., 1983, Production statistics for the Coeur d'Alene mining district, Shoshone County, Idaho, 1884-1980: Idaho Geological Survey Technical Report 83-3, 33 p.}{Reserve-Resource:: Hecla Mining Co., 1980 Annual Report}