| Lat / long: | 39.27487, -123.13969 |
| Tertiary: | Manganese |
| Discovery year: | 1917 |
| Operation type: | Unknown |
| Development status: | Past Producer |
| MRDS | M010031 |
| MAS | 60450008 |
| DEP | 10261340 |
| Reference | CALIF JOUR MINES AND GEOL V49 NO4 OCT 1953 P388 |
| Reporter | Western Field Operations Center (WFOC) |