| Lat / long: | 38.25529, -106.11921 |
| Primary: | Aluminum |
| Ore: | Alunite |
| Gangue: | Chlorite, Diaspore, Epidote, Quartz |
| Other material: | Kaolin |
| Operation type: | Unknown |
| Production size: | None |
| Development status: | Occurrence |
| Host rock: | Intrusive Quartz Latite And Rhyolite |
| Host type: | Rhyolite |
| Associated rock: | Intrusive Quartz Latite And Rhyolite |
| Associated type: | Rhyolite |
| Structure: | Sawatch Range, San Juan Volcanic Field, Rio Grande Rift, Bonanza Caldera, Greenback Gulch Volcanic Neck |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| Alteration processes: | Silicification, Sericitization, Solfataric Alteration |
| MRDS | D008957 |
| DEP | 10090904 |
| Reference | BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, P |
| Reporter | Schwochow, Stephen D. |