Keystone Mine
Past ProducerGoldUSGS MRDS
Location
| State | South Dakota |
| County | Pennington |
| Coordinates | 45.89829, -103.41947 |
Commodities
| Primary | Gold |
| Secondary | Silver |
Mine Details
| Status | Past Producer |
| Deposit Type | Vein |
| Discovery Year | 1892 |
| Data Source | USGS MRDS |
| Source ID | 10055456 |