| Lat / long: | 38.1289, -105.33363 |
| Primary: | Silver, Gold |
| Secondary: | Lead, Zinc, Copper |
| Ore: | Chalcopyrite, Galena, Gold, Jamesonite, Smithsonite, Sphalerite, Tetrahedrite |
| Gangue: | Calcite, Dolomite, Pyrite, Quartz, Stibnite |
| Orebody form: | PIPE-LIKE STRUCTURE |
| Discovery year: | 1877 |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1878 |
| Host rock: | Granite And Gneiss Fragments Found At Depth |
| Host type: | Tuff,Volcanic Breccia (Agglomerate),Andesite |
| Associated rock: | Rosita Andesite |
| Associated type: | Andesite |
| Structure: | Rosita Volcanic Center, Wet Mtns, Breccia Pipe, Faults, Fractures, Mineralized Fissures |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| Alteration processes: | Strong Argillization; Quartz Zone |
| MRDS | D008054 |
| DEP | 10012430 |
| Reference | {Deposit:: CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.}{Deposit:: SHARP, W.N., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081, 1:24,000. .}{Deposit:: SIEMS, P.L., 1967, VOLCANIC AND ECONOMIC GEOLOGY OF THE ROSITA HILLS AND SILVER CLIFF DISTRICTS, CUSTER COUNTY, COLORADO: COLORADO SCHOOL MINES, D. SC. THESIS, T 1042, 222 P.} |
| Reporter | Collins, Donna B. |