Sylvanite from selected localities.
USA | |
| Minerals of Colorado (1997) E.B. Eckel |
Minerals of Colorado (1997) E.B. Eckel | |
U.S. Geological Survey Professional Paper 223 |
USA | |
| Minerals of Colorado (1997) E.B. Eckel |
Minerals of Colorado (1997) E.B. Eckel | |
U.S. Geological Survey Professional Paper 223 |