Silver from selected localities.
USA | |
| Rogers, 1853 |
| Smith, R.C., II (1977). Zinc and lead occurrences in Pennsylvania. Pennsylvania Geological Survey, Mineral Resource Report 72, 318 pgs. |
USA | |
| Rogers, 1853 |
| Smith, R.C., II (1977). Zinc and lead occurrences in Pennsylvania. Pennsylvania Geological Survey, Mineral Resource Report 72, 318 pgs. |