Magnetite, Grace mine, Morgantown. These crystals are distinctive in that they are dodecahedral, 7 cm across. (Author: John S. White)
| Dimensiones: | 750 x 563 |
| Tamaño fichero: | 44.86 kbytes |
| Captura: | |
| Modelo cámara: | |
| Velocidad obturador: | |
| Focal length: | |
| Apertura: | |
| Flash: | |
| ISO: |