| Lat / long: | 37.90157, -121.8791 |
| Primary: | Mercury |
| Ore: | Cinnabar, Metacinnabar |
| Gangue: | Calcite, Chalcedony, Chromite, Dolomite, Marcasite, Opal, Pyrite, Quartz, Stibnite |
| Orebody form: | IRREGULAR, TABULAR |
| Discovery year: | 1863 |
| Operation type: | Unknown |
| Production size: | Medium |
| Development status: | Past Producer |
| First production started: | 1875 |
| Host rock: | Franciscan Complex |
| Host type: | Serpentinite |
| Associated type: | Rhyolite |
| Alteration processes: | Silica Carbonate Alteration Of Serpentine |
| MRDS | M055494 |
| DEP | 10040642 |
| Reference | {Deposit:: BAILEY, E. H., USGS, PERSONAL FILES.}{Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252.}{Deposit:: ROSS, C. P., 1940, QUICKSILVER DEPOSITS OF THE MOUNT DIABLO DISTRICT, CONTRA COSTA COUNTY, CALIFORNIA: USGS BULL. 922 - B.}{Deposit:: DAVIS, F.F. AND GOLDMAN, H.B., 1958, MINES AND MINERAL RESOURCES OF CONTRA COSTA COUNTY, CALIFORNIA: CJMG V. 54, P. 530-535}{Deposit:: 1955 DIREXPL DMEA UNSUCCESSFUL IN DISCOVERING NEW OR}{Production:: USBM DATA} |
| Reporter | Gassaway, J. S. |