| Lat / long: | 39.33207, -123.18579 |
| Tertiary: | Manganese |
| Other material: | Chert, Psilomelane, Pyrolusite |
| Discovery year: | 1914 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1916 |
| MRDS | M010036 |
| MAS | 60450057 |
| DEP | 10236764 |
| Reference | {Deposit:: CDMG,BULLETINS#152,1950, #76,1918.}{Deposit:: USGS FILE,1917,1918} |
| Reporter | Deino, Al |