Niobium (Columbium) Mines in California
1Total Sites
0Active
Niobium (Columbium) Mining in California
California has 1 niobium (columbium)-related mine and mineral deposit locations recorded in federal databases. None are currently listed as active, but historical records document past production and geological occurrences. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.
By County
| County | Sites |
|---|---|
| Calaveras County | 1 |
Niobium (Columbium) Mines
| Mine | County | Type | Status |
|---|---|---|---|
| Small Prospect Mar | Calaveras | Occurrence |
All niobium (columbium) mines nationwide → · All mines in California →