Graves Claims
Past ProducerUSGS MRDS
Location
| State | California |
| County | Alameda |
| Coordinates | 37.51271, -121.57882 |
Commodities
| Tertiary | Manganese |
Mine Details
| Status | Past Producer |
| Discovery Year | 1918 |
| Data Source | USGS MRDS |
| Source ID | 10259794 |
| State | California |
| County | Alameda |
| Coordinates | 37.51271, -121.57882 |
| Tertiary | Manganese |
| Status | Past Producer |
| Discovery Year | 1918 |
| Data Source | USGS MRDS |
| Source ID | 10259794 |