| Lat / long: | 38.19989, -122.30105 |
| Primary: | Mercury |
| Secondary: | Chromium |
| Tertiary: | Manganese, Copper |
| Discovery year: | 1850 |
| Operation type: | Unknown |
| Deposit type: | DISSEMINATED, VEINS, STOCKWORKS |
| Production size: | Medium |
| Development status: | Producer |
| First production started: | 1864 |
| Structure: | LOCAL FAULTS TRENDING NW, LITHOLOGIC CONTACTS, NW TRENDING ANTICLINE (MAYACMAS ANTICLINE) |
| Alteration processes: | KAOLINIZATION SEDIMENTS, SILICA CARBONATE ALTERATION OF SERPENTINE |
| MRDS | M055652 |
| DEP | 60000983 |
| Reference | YATES, R. G. AND HILPERT, L. S., 1946, QUICKSILVER DEPOSITS OF THE EASTERN MAYACMAS DISTRICT, LAKE AND NAPA COUNTIES, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42 P. 231 - 286 |