Keystone Mine
Past ProducerSilverUndergroundUSGS MRDS
Location
| State | Colorado |
| County | Custer |
| Coordinates | 38.16390, -105.44751 |
Commodities
| Primary | Silver |
| Secondary | Copper, Lead, Zinc, Gold |
| Tertiary | Iron |
Mine Details
| Status | Past Producer |
| Type | Underground |
| Deposit Type | Vein |
| First Production | 1880 |
| Last Production | 1964 |
| Discovery Year | 1895 |
| Data Source | USGS MRDS |
| Source ID | 10012297 |