Collophane from selected localities.
USA | |
| NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada |
NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada |
USA | |
| NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada |
NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada |