Contra Costa County, CA Manganese Mines
Manganese Mines in Contra Costa County, CA
| Mine |
Owner |
Land Status |
Work Type |
Minerals |
| Prospect South of Sycamore Canyon |
|
|
|
Manganese |
| Prospects North |
|
Unknown |
|
Manganese |
| Prospects North of North Peak |
|
|
|
Manganese |
| Red Rock |
|
|
|
Manganese |
| Red Rock |
|
|
|
Manganese |
| Red Rock |
|
|
|
Manganese |
| Silver Mine |
|
|
|
Manganese |
| Unnamed Location |
|
Unknown |
|
Manganese |
| Unnamed Location |
|
Unknown |
|
Manganese |
| Unnamed Prospect |
|
Unknown |
|
Manganese |
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