Uraninite from selected localities.
USA | |
| [var: Pitchblende] U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
[var: Pitchblende] USGS: Geological Survey Circular 294 | |
[var: Pitchblende] USGS: Geological Survey Circular 294 |