| Lat / long: | 37.80379, -122.17215 |
| Primary: | Copper |
| Secondary: | Sulfur |
| Ore: | Bornite, Chalcocite, Chalcopyrite, Pyrite, Sphalerite |
| Orebody form: | LENTICULAR |
| Operation type: | Unknown |
| Production size: | Yes |
| Development status: | Past Producer |
| Host type: | Rhyolite |
| Structure: | Hayward Fault: Two Parallel Smaller Faults With Horizontal Displacement. |
| MRDS | M024332 |
| DEP | 10036253 |
| Reference | {Deposit:: DAVIS, F.F., 1950: MINES AND MINERAL RESOURCES OF ALAMEDA COUNTY; CALIF. JOUR. MINES AND GEOLOGY, 001 46, NO.2 DIV OF MINES, P. 290.}{Deposit:: ERIC, J.H., 1948: COPPER IN CALIFORNIA BULL. 144: DIV. OF MINES, P-212}{Deposit:: LAIZURE, C.V., 1929: SAN FRANCISCO FIELD DIV.; 25TH REPT. STATE MIN.; CALIF DIV. OF MINES P. 440.} |
| Reporter | Fraticelli, L. A. (Albers, J.) |