Gypsum crystals. These rosette-shaped crystal groups of gypsum (calcium sulphate,CaSO4) have formed in a crack or void inside a rhyolitic (composed of rhyolite) matrix rock (red). The individual rosettes are around 10 millimetres in diameter | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5526 px × 3630 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |