| Lat / long: | 47.51694, -116.14855 |
| Primary: | Lead, Silver |
| Secondary: | Zinc, Copper |
| Tertiary: | Gold |
| Ore: | Galena, Sphalerite, Tetrahedrite, Chalcopyrite |
| Gangue: | Quartz, Siderite, Pyrite |
| Orebody form: | TABULAR |
| Discovery year: | 1885 |
| Operation type: | Underground |
| Deposit type: | HYDROTHERMAL VEIN AND REPLACEMENT |
| Production size: | Medium |
| Development status: | Past Producer |
| Production years: | 1888-1918 |
| First production started: | 1888 |
| Last production ended: | 1918 |
| Host rock: | St. Regis Formation, Revett Formation |
| Host type: | Quartzite |
| Structure: | The Cate Fault (strikes NW to N, dips 55SW) is the main shear in the deposit with several branch shears, the Dull Fault being the most important. The Cate Fault and its branch shears are connected by Link faults which trend NE., Deposit is within the NE limb of a WNW-striking anticline. Host sediments strike N60-80W and dip SW. The axial plane of the anticline strikes N16W dips 42W and the axis plunges 34 degrees to N60W. |
| Tectonic: | Belt Basin |
| Alteration processes: | The Last Chance orebodies were largely oxidized, with cerussite the principal ore mineral. |
| MRDS | W019519 |
| DEP | 10107338 |
| Reference | {Deposit:: UMPLEBY, J. B., AND JONES, E. L., JR., 1923 , GEOLOGY AND ORE DEPOSITS OF SHOSHONE COUNTY, IDAHO: USGS BULL. 732 , 156 P.}{Deposit:: RANSOME, F. L., AND CALKINS, F.C., 1908 , THE GEOLOGY AND ORE DEPOSITS OF THE COEUR *ALENE DISTRICT, IDAHO: USGS PROF. PAPER 62 , 203 P.}{Deposit:: RANSOME, F. L., 1905 , ORE DEPOSITS OF THE COEUR *ALENE DISTRICT, IDAHO: USGS BULL. 260 , P. 274 - 303}{Deposit:: Hobbs, S. W., And Others, 1965 , Geology Of The Coeur *lene District, Shoshone County, Idaho: USGS Prof. Paper 478 , 139 P.}{Production:: Mitchell, V.E., and Bennett, E.H., 1983, Production statistics for the Coeur *lene mining district, Shoshone County, Idaho, 1884-1980: Idaho Geological Survey Technical Report 83-3, 33 p.}{Production:: Long, Keith R., 1998, Grade and tonnage models for Coeur *lene-type polymetallic veins: U.S. Geological Survey Open-File Report 98-583, 28 p.} |
| Reporter | Kauffman, John D., Long, Keith R., Miller, Pat J. |