| Lat / long: | 40.15405, -123.24001 |
| Tertiary: | Silica, Manganese |
| Other material: | Chert, Psilomelane, Pyrolusite, Quartz, Rhodochrosite |
| Discovery year: | 1941 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1943 |
| MRDS | M020338 |
| MAS | 61050050 |
| DEP | 10141510 |
| Reference | CDMG BULL.152,1950 |
| Reporter | Deino, Al |