Ferberite from selected localities.
USA | |
| USGS Bull 583 |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
USGS Bull 583 | |
Minerals of Colorado (1997) Eckel, E. B. |
USA | |
| USGS Bull 583 |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
USGS Bull 583 | |
Minerals of Colorado (1997) Eckel, E. B. |
Tip Top, Boulder County, Colorado, USA