| Lat / long: | 37.54931, -121.36662 |
| Tertiary: | Manganese, Silica |
| Other material: | Chert, Pyrolusite, Rhodochrosite |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1918 |
| MRDS | M020276 |
| MAS | 60990023 |
| DEP | 10141465 |
| Reference | {Deposit:: CAL.DIV.MINES,BULL.152,1950}{Deposit:: SHAFTS IN N1/2 NW1/4; SEC 22 NW1/4; SEC 23 NW1/4 NW1/4; NW1/}{Deposit:: OF SEC 16; NE1/4 NE1/4 OF SEC 21}{Deposit:: USGS BULL 936, PL 10} |
| Reporter | Deino, Al |