| Lat / long: | 31.5718, -110.7704 |
| Primary: | Gold |
| Secondary: | Lead, Copper, Silver |
| Tertiary: | Molybdenum, Zinc |
| Ore: | Gold, Silver, Wulfenite |
| Gangue: | Biotite, Calcite, Fluorite, Hornblende, Kaolin, Magnetite, Quartz |
| Discovery year: | 1893 |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1907 |
| Last production ended: | 1937 |
| Host type: | Andesite |
| Associated rock: | Middle Member Of Bathtub Formation (Andesite Flows);Gringo Gulch Volcanics , Dacite Porphyry |
| Associated type: | Dacite |
| Structure: | E-W Trending Quartz Fissure Veins; Andesite Is Cut By Steeply S-Dip Ping Sheeting Structures, Dipping About Parallel With Lode, Gold Is Uniformly Distributed In Vein But Generally Favors Footwal L And Is Only Rarely Found In Hanging Wall |
| Tectonic: | Mt Wrightson Fault Block |
| Alteration processes: | Deeply Oxidized; Epidotized; Propylitic Alteration |
| MRDS | M030418 |
| DEP | 10037110 |
| Reference | {Deposit:: KEITH, 1975, ABM BULL 191}{Deposit:: SCHRADER, 1915, USGS BULL 582}{Deposit:: DREWES, 1971, USGS MAP I-614}{Deposit:: ABGMT FILE DATA, STANTON B. KEITH}{Deposit:: USBM FILES, GRINGO MINE GROUP}{Deposit:: ABGMT-USBM FILE DATA}{Deposit:: ABGMT CLIPPINGS FILES, GRINGO GROUP}{Deposit:: ADMR FILE DATA, GRINGO MINE}{Production:: KEITH, 1975, P. 89} |
| Reporter | Peterson, Jocelyn A. |