Acceso a Foro FMF
Guía de uso de Galería FMF
Gypsum
Naica Mine, Chihuahua, Mexico
7 cm
Small group of neogenic gypsum crystals formed in a mine sump. Shows two stages of gypsum growth...an early transparent "selenite" stage of long crystals and a later coating of dusty fine-grained gypsum (Author: Peter Megaw)
| Dimensiones: | 515 x 445 |
| Tamaño fichero: | 26.93 kbytes |
| Captura: | |
| Modelo cámara: | |
| Velocidad obturador: | |
| Focal length: | |
| Apertura: | |
| Flash: | |
| ISO: |
