| Lat / long: | 38.75548, -122.99778 |
| Tertiary: | Chromium, Iron |
| Discovery year: | 1884 |
| Operation type: | Underground |
| Development status: | Past Producer |
| First production started: | 1884 |
| MAS | 60970020 |
| DEP | 10141361 |
| Reference | {Deposit:: DON,D.H.,AND THAYER,T.P.,1946,CDMAND G BULL 134,PT.2,CHAP.1,}{Deposit:: PP.227-228,262.} |
| Reporter | Hayashi |