Polarised light micrograph of a thin section showing the complex details of precipitation and crystallization inside a small geode, with banded rings of chalcedony on the periphery and a core of crystalline quartz. The colours are a consequence of the transmitted light being polarised. Actual width of specimen tip to tip is 55 mm. | |
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 : | - |