| Lat / long: | 37.56911, -121.62133 |
| Tertiary: | Manganese, Silica |
| Other material: | Chert, Glaucophane, Limonite, Psilomelane, Quartz |
| Operation type: | Surface |
| Development status: | Past Producer |
| First production started: | 1915 |
| MRDS | M004668 |
| MAS | 60010009 |
| DEP | 10186918 |
| Reference | {Deposit:: TRASK-GEO.DESCRIPT.MN.DEPS.OF CAL-CAL DIV OF MINES,BUL#152-A}{Deposit:: DOM BULL 125 P98} |
| Reporter | Niemi |