Commodities
PrimarySilver, Zinc, Lead
SecondaryCopper
TertiaryGold
Commodity typeM
Deposit
Deposit typeHYDROTHERMAL VEIN AND REPLACEMENT
Model85: Polymetallic veins
Deposit sizeM
WorkingsUnderground
Orebody formPINCH AND SWELL
Ore controlChange in dip of Prichard Formation from 70 degrees to 25 to 30 degrees, then back to 70 degrees again; Changes in strike of fractures; and position and attitude of monzonite dikes (veins in parallel zones of weakness).
Materials
Ore mineralsSphalerite, Galena, Chalcopyrite, Tetrahedrite, Malachite
GangueCalcite, Quartz, Siderite, Pyrite, Chlorite, Pyrrhotite, Grunerite, Magnetite, Clinozoisite, Epidote, Garnet, Hematite, Ankerite
Geology
Host rockArgillite · Lower Prichard Formation
Associated rockMonzonite · Gem Stock
StructureOsburn Fault (WNW) to south of deposit., Burke-Trout Creek Anticline (NS) - deposit occurs in the south end of the east limb., Puritan Fault (N10W 70NE) bounds the deposit to the east., Carlisle Fault (N20W 75SW) bounds the deposit to the west., Monzonite dike strikes EW, dips 70N, with parallel plane of weakness.
Tectonic settingBelt Basin
AlterationSericite-pyrite envelopes extend well outward from veins into host Prichard Formation argilite. A calcite-chlorite envelope extends less far from the vein, and orthoclase-epidote-garnet occur very close to the vein. The monzonite dikes are progressively altered, as mineralization is approached, from a zone where horblende is altered to chlorite and epidote, feldspar to clinozoisite, sphene to leucoxene and epidote, magnetite to epidote, and pyrite to hematite, to a zone where sericite begins to replace all minerals associated with calcite, to a zone where the rock almost entirely consists of sericite and calcite.
Economic & production
Development statusPast Producer
Production years1892, 1906-1910, 1912-1924, 1936-1977
First production1892
Last production1977
Discovery year1885
Identification
Deposit ID10106000
MRDS IDW026680
Alternate namesGrey Rock Lease, Interstate-Callahan MineCallahan Mine, Interstate Mine, Silver State Prospect, Montana-Idaho
RegionNA
Data scoreA
Coordinates47.34377, -115.60241
References
ROALES, P. A., 1973 , ORE AND MONZONITE DIKE RELATIONS, MONITOR MINE, COEUR D'ALENE DISTRICT, IDAHO: MOSCOW, IDAHO, UNIV. OF IDAHO, MS THESIS, 142 P.FRYKLUND, V. C., JR., 1964 , ORE DEPOSITS OF THE COEUR D'ALENE DISTRICT, SHOSHONE COUNTY, IDAHO: USGS PROF. PAPER 445 , 103 P.JONES, E. L., 1919 , A RECONNAISSANCE OF THE PINE CREEK DISTRICT, IDAHO: USGS BULL. 710 , 36 P.GRIGGS, A. B., 1952 , GEOLOGY AND NOTES ON ORE DEPOSITS IN CANYON-NINE MILE CREEKS AREA, SHOSHONE COUNTY, IDAHO: USGS OPEN - FILE REPT., 108 P.DAY MINES 1973 ANNUAL REPORT, P. 3 .