Mine detail: Helena-Frisco Mine

Previously called 'Black Bear MineBadger MineSan Francisco MineMilwaukee MineGem of the Mountains MineGem MineFrisco Mine'

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Location

Lat / long: 47.50957, -115.86132

Resource(M)

Primary: Zinc, Lead
Secondary: Silver, Copper
Tertiary: Gold
Ore: Chalcocite, Chalcopyrite, Galena, Sphalerite, Tetrahedrite
Gangue: Ankerite, Biotite, Magnetite, Marcasite, Pyrite, Pyrrhotite, Quartz, Siderite
Orebody form: PINCH AND SWELL
Discovery year: 1884

Production

Operation type: Underground
Deposit type: HYDROTHERMAL REPLACEMENT VEIN
Production size: Medium
Development status: Past Producer
Production years: 1889-1913, 1915-1957, 1966-1967
First production started: 1896
Last production ended: 1967

Geology

Host rock:Upper Prichard Formation, Burke Formation
Host type:Quartzite
Structure:Osburn Fault (WNW) to the south., Frisco Fault, a shear sypathetic to the Osburn Fault., Cross faults
Tectonic:Belt Basin
Alteration processes:Sericite; Chlorite; Garnet

References

MRDSW026656
DEP10078363
Reference{Deposit:: UMPLEBY, J. R., AND JONES, E. L., JR., 1923 , GEOLOGY AND ORE DEPOSITS OF SHOSHONE COUNTY, IDAHO: USGS BULL. 732 , 156 P.}{Deposit:: SHENON, P. J., 1938 , GEOLOGY AND ORE DEPOSITS NEAR MURRAY, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 47 , 44 P.}{Deposit:: FRYKLUND, V. C., JR., 1964 , ORE DEPOSITS OF THE COEUR *LENE DISTRICT, SHOSHONE COUNTY, IDAHO: USGS PROF. PAPER 445 , 103 P.}{Deposit:: RANSOME, F. L., AND CALKINS, F. C., 1908 , THE GEOLOGY AND ORE DEPOSITS OF THE COEUR *LENE DISTRICT, IDAHO: USGS PROF. PAPER 62 , 203 P.}{Deposit:: RANSOME, F. L., 1905 , ORE DEPOSITS OF THE COEUR *LENE DISTRICT, IDAHO: USGS BULL. 260 , P. 274 - 303 .}{Deposit:: GRIGGS, A. B., 1952 , GEOLOGY AND NOTES ON ORE DEPOSITS IN THE CANYON-NINE MILE CREEKS AREA, SHOSHONE COUNTY, IDAHO: USGS OPEN FILE REPT., 108 P.}{Production:: CROSBY, G. M., 1959 , The mineral belts north of the Osburn Fault, Coeur *lene district, Shoshone County, Idaho: Minneapolis, Univeristy of Minnesota, G.E. Thesis, 39 p.}{Production:: Long, K.R., 1988, Grade and tonnage models for Coeur *lene-type polymetallic veins: US Geological Survey Open-File Report 98-583, 28 p.}
ReporterKauffman, John D., Long, Keith R., Miller, Pat J.