| Lat / long: | 38.19989, -122.60106 |
| Primary: | Chromium, Mercury |
| Discovery year: | 1850 |
| Operation type: | Unknown |
| Deposit type: | STOCKWORK, VEINS, DISSEMINATED, INCRUSTATIONS |
| Production size: | Medium |
| Development status: | Producer |
| First production started: | 1861 |
| Structure: | THE MAJOR SHEAR ZONES, CHANGES IN ATTITUDE OF A FAULT OR SPLITS IN A FAULT, NW STRIKE OF FRANCISCAN ROCKS AND DIP STEEPLY NE, NW TRENDING FAULT ZONES |
| Alteration processes: | SILICA CARBONATE ALTERATION OF SERPENTINE, INDURATION OF SEDIMENTS |
| MRDS | M055694 |
| DEP | 60000984 |
| Reference | {Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252}{Deposit:: HONKE, M. J., JR., AND VER PLANCK, W. E., JR., 1950, MINES AND MINERAL RESOURCES OF SONOMA COUNTY, CALIFORNIA; CALIF. JOUR. OF MINES AND GEOLOGY, V. 46, P. 98 - 105}{Deposit:: RANSOME, A. L. AND KELLOGG, J. L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 35, P. 353 - 486} |