| Lat / long: | 37.55741, -121.61293 |
| Tertiary: | Chromium, Iron |
| Other material: | Antigorite, Chlorite, Chromite, Chrysotile, Uvarovite |
| Discovery year: | 1882 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1885 |
| MRDS | M004675 |
| MAS | 60010029 |
| DEP | 10114223 |
| Reference | {Deposit:: USGS BULL 430 1910 CHROMITE IN CALIFORNIA PP 173-174}{Deposit:: CDMG 17TH REPT OF STATE MINEROLOGIST 1920 P 21}{Deposit:: CDMG BULL 134 PT 2 CHAP 2 1953,ALAMEDA COUNTY P.52}{Deposit:: CDMG 11TH REPT OF STATE MINERALOGIST 1893 P.122} |
| Reporter | Unknown |