Light micrograph of a thin section of syenite,a coarse- grained igneous rock,containing the mineral augite (large grain inclusions). Augite occurs as a black to greenish-black,prismatic crystal which in cross-section appears almost square or octagonal. It is a common component of basic igneous rocks such as gabbro,dolerite and basalt. Magification: x3 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Durham, John |
Taille de l’image : | 5139 px × 3492 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |