Big Bertha Mine
Past ProducerQuartz, FeldsparUSGS MRDS
Location
| State | Colorado |
| County | Jefferson |
| Coordinates | 39.33944, -105.21836 |
Commodities
| Primary | Quartz, Feldspar |
| Secondary | Thorium, REE |
Mine Details
| Status | Past Producer |
| First Production | 1947 |
| Last Production | 1953 |
| Data Source | USGS MRDS |
| Source ID | 10101836 |