Polarised light micrograph of a thin section of agate from Blue Hole, Usan, Montrose, Scotland. Agate is a form of fine grained microcrystalline quartz. This image shows banded layers of chalcedony. Although agate can be found in a range of rock types it is predominantly associated with metamorphic rock. It is a brightly coloured, banded, semi-precious gemstone which is the birth stone for Gemini. Magnification: x14 at 10cm wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Lowry, Steve |
Taille de l’image : | 3872 px × 2592 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |