Commodities
PrimarySilver
SecondaryCopper, Lead
TertiaryNickel, Antimony, Cobalt, Zinc
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formBUNCHES
Ore controlComplex Fracture Zone
Materials
Ore mineralsAnglesite, Boulangerite, Bournonite, Chalcopyrite, Erythrite, Galena, Gersdorffite, Proustite, Pyrargyrite, Tetrahedrite
GangueAnkerite, Calcite, Pyrite, Quartz, Siderite
Geology
Host rockSandstone · St. Regis Formation-Quartzitic Sandstones; Shales;Wallace Formation-Sandstones; Calcareous Shales
StructureAg Ore Occurs In Subsided Block Between The Polaris And Big Creek Faults.
AlterationBleaching; Sericitization
Economic & production
Development statusProducer
First production1886
Discovery year1884
Identification
Deposit ID10073446
MRDS IDW019537
Alternate namesPolaris Group, Chester Group
RegionNA
Data scoreB
Coordinates47.50457, -116.05523
References
UMPLEBY, J. B., AND JONES, E. L., JR., 1923 , GEOLOGY AND ORE DEPOSITS OF SHOSHONE COUNTY, IDAHO: USGS BULL. 732 , 156 P.WILLARD, M. E., 1941 , MINERALIZATION AT THE POLARIS MINE, IDAHO: ECON. GEOLOGY, V. 36 , NO. 5 , P. 539 - 550FRYKLUND, V. C., JR., 1964 , ORE DEPOSITS OF THE COEUR D' ALENE DISTRICT, SHOSHONE COUNTY, IDAHO: USGS PROF. PAPER 445 , 103 P.HECLA'S 1973 ANNUAL COMPANY REPORT.5) RANSOME, F. L., AND CALKINS, F. C., 1908 , THE GEOLOGY AND ORE DEPOSITS OF THE COEUR D' ALENE DISTRICT, IDAHO: USGS PROF PAPER 62 , 203 P6) WESTERN MINING NEWS, 1974 - 75 DIRECTORY OF MINES IN IDAHO (COEUR D' ALENES) AND WASHINGTON, P. 881908 GEOLMAP RANSOME AND CALKINS, PROF. PAPER 621923 GEOLMAP UMPLEBY AND JONES, BULL. 7321964 OTHER V. C. FRYKLUND, PROF. PAPER 445SPOKANE CHRONICLE, MAY 18 , 1971 ; AP. 13 , 1969 ; MAY 21 , 1969