Keystone Lode
ProspectMicaSurfaceUSGS MRDS
Location
| State | South Dakota |
| County | Custer |
| Coordinates | 43.74276, -103.70367 |
Commodities
| Primary | Mica |
| Tertiary | Beryllium |
Mine Details
| Status | Prospect |
| Type | Surface |
| Data Source | USGS MRDS |
| Source ID | 10202007 |
| State | South Dakota |
| County | Custer |
| Coordinates | 43.74276, -103.70367 |
| Primary | Mica |
| Tertiary | Beryllium |
| Status | Prospect |
| Type | Surface |
| Data Source | USGS MRDS |
| Source ID | 10202007 |