| Lat / long: | 38.29471, -106.1425 |
| Primary: | Lead, Gold, Copper, Silver |
| Secondary: | Manganese, Zinc |
| Tertiary: | Titanium, Bismuth, Antimony, Tellurium |
| Discovery year: | 1879 |
| Operation type: | Unknown |
| Deposit type: | FISSURE VEINS |
| Production size: | Small |
| Development status: | Occurrence |
| First production started: | 1880 |
| Last production ended: | 1969 |
| Structure: | BONANZA CALDERA, SAWATCH RANGE, SAN JUAN VOLCANIC FIELD, RIO GRANDE RIFT |
| 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 | D009181 |
| DEP | 60000327 |
| Reference | {Deposit:: PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOL 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.} |