Polybasite from selected localities.
USA | |
| U.S. Geological Survey Professional Paper 1753 |
U.S. Geological Survey Professional Paper 1753 | |
U.S. Geological Survey Professional Paper 1753 |
USA | |
| U.S. Geological Survey Professional Paper 1753 |
U.S. Geological Survey Professional Paper 1753 | |
U.S. Geological Survey Professional Paper 1753 |