Chalcedony from selected localities.
USA | |
| Rolf Luetcke |
rolf luetcke | |
Rolf Luetcke | |
Rolf Luetcke specimen | |
Rolf Luetcke | |
Rolf Luetcke | |
Rolf Luetcke | |
Rolf Luetcke | |
| Rolf Luetcke |
USA | |
| Rolf Luetcke |
rolf luetcke | |
Rolf Luetcke | |
Rolf Luetcke specimen | |
Rolf Luetcke | |
Rolf Luetcke | |
Rolf Luetcke | |
Rolf Luetcke | |
| Rolf Luetcke |
Gallagher Vanadium & Rare Minerals Corp Mine, Tombstone Mining District, Cochise County, Arizona, USA