"Porzellanjaspis" (porcelaine jasper) - a mixture of indialite, mullite, quartz and clay minerals is often found on burning coal dumps or in basalt rocks. The shown one is a very old sample from Planitz near Zwickau, Saxony (5 cm). (Author: Andreas Gerstenberg)
| Dimensiones: | 600 x 450 |
| Tamaño fichero: | 36.27 kbytes |
| Captura: | |
| Modelo cámara: | |
| Velocidad obturador: | |
| Focal length: | |
| Apertura: | |
| Flash: | |
| ISO: |