| Lat / long: | 37.56797, -121.63992 |
| Primary: | Manganese |
| Discovery year: | 1880 |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Producer |
| Host rock: | Franciscan Complex |
| Host type: | Shale,Chert |
| MRDS | M004681 |
| DEP | 10109084 |
| Reference | {Deposit:: CALIF. JOUR. MINES & GEOL. V. 46, NO.2. APRIL 1950, P.344, PL. 58}{Deposit:: DOM BULL. 125, P.101}{Deposit:: BULL. 152, P.25}{Deposit:: BULL. 140 , P. 66 , PL. 1} |
| Reporter | Gere, W., Von Dohlen, E.; Albers, J. |