| Lat / long: | 38.25195, -106.13866 |
| Primary: | Lead, Gold, Silver |
| Secondary: | Zinc, Copper |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| Host rock: | Rawley Andesite;Silicic Flows And Intrusives |
| Host type: | Andesite |
| Associated rock: | Rawley Andesite;Silicic Flows And Intrusives |
| Associated type: | Andesite |
| Structure: | Sawatch Range, San Juan Volcanic Field, Rio Grande Rift, Bonanza Caldera, Concentric And Radial Fractures |
| Tectonic: | Central Cordillera (Southern Rocky Mtns.) |
| Alteration processes: | Early Barren Stage Of Alteration By Fumarolic Or Acid-Hot Spring Activity Resulted In Intense Silicification, Wallrock Replacement By Jasper And Alteration Products Hematite, Diaspore, Alunite, Barite, Zunyite, Rutile, And Kaolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solutions Deposited Ore And Gangue And Caused Micaceous Alteration (Sericite And Chlorite) And Calcite, Quartz, And Pyrite. |
| MRDS | D008223 |
| DEP | 10012550 |
| Reference | {Deposit:: PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOLOGICAL SURVEY BULL. 9, 136 P.}{Deposit:: BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.}{Deposit:: MARRS, R.W., 1973, APPLICATION OF REMOTE-SENSING TECHNIQUES TO THE GEOLOGY OF THE BONANZA VOLCANIC CENTER: COLORADO SCHOOL OF MINES PH.D. THESIS T-1531} |
| Reporter | Schwochow, Stephen D. |