| Lat / long: | 37.33632, -121.49462 |
| Tertiary: | Manganese |
| Discovery year: | 1896 |
| Operation type: | Unknown |
| Development status: | Past Producer |
| MRDS | M020189 |
| MAS | 60850013 |
| DEP | 10116904 |
| Reference | {Deposit:: CALIF. BULL. 152, P. 249}{Deposit:: BULL. 152, PP.251-253; U.S. BUREAU OF MINES R.I. 5254} |
| Reporter | Western Field Operations Center (WFOC) |