Keystone-union
ProducerCopperUSGS MRDS
Location
| State | California |
| County | Calaveras |
| Coordinates | 37.97630, -120.64379 |
Commodities
| Primary | Copper |
| Secondary | Silver, Gold |
Mine Details
| Status | Producer |
| Deposit Type | Replacement |
| Data Source | USGS MRDS |
| Source ID | 10028813 |