Quartz from selected localities.
Germany | |
| [var: Smoky Quartz] Aufschluss 1988(2), 125-128 |
| M Kampf collection |
| Lapis 1988(1), 16-35 |
Lapis 1988(1), 16-35 | |
| Lapis 1988(1), 16-35 |
Harjo Neutkens collection |
Germany | |
| [var: Smoky Quartz] Aufschluss 1988(2), 125-128 |
| M Kampf collection |
| Lapis 1988(1), 16-35 |
Lapis 1988(1), 16-35 | |
| Lapis 1988(1), 16-35 |
Harjo Neutkens collection |
Rohdenhaus Quarry, Rohdenhaus, Wülfrath, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany