Dendritic crystals in chalcedony. Chalcedony (white) is a variety of the silicate mineral quartz that forms extremely small,fine crystals. It can occur in a variety of colours. This sample has a delicate dendritic (branching) pattern caused by iron oxide (orange) mineral deposits. The sample measures 27 millimetres tall | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 3898 px × 5268 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |