Mineral Resource Map
Mine detail: Grummett-Knox Mine Group
Previously called 'Grummett #2 DepositMezzero Deposit'
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Location
| Lat / long: | 37.52522, -121.34822 |
Resource(M)
| Tertiary: | Manganese, Silica |
| Other material: | Chert, Pyrolusite |
| Discovery year: | 1918 |
Production
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1918 |
Geology
References
| MRDS | M020266 |
| MAS | 60990010 |
| DEP | 10117875 |
| Reference | CAL.DIV.MINES AND GEOL,BULL.152,1950 |
| Reporter | Deino, Al |