Moss agate slice. Agate is an aggregate of different forms of silica (SiO2) that have formed concentric bands within a geode. A geode forms when the silica precipitates from liquid onto the inside surface of an empty pocket in a host rock. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / DK IMAGES |
Taille de l’image : | 4950 px × 3510 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |