Staurolite from Russia. Staurolite is a brown glassy mineral that occurs as hexagonal prisms often twinned in the shape of a cross. It consists of a silicate of aluminum and iron. The mineral often forms porphyroblasts. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Degginger, Phil |
Taille de l’image : | 6689 px × 2531 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |