Pumice. This igneous rock is formed by the rapid cooling of volcanic lava. It has a vesicular structure with many air spaces and so has a low weight and density. This specimen is from Eifel,Germany | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5616 px × 3744 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |