Ilvaite mineral sample. This mineral is a sorosilicate (silicate-hydroxide complex) containing iron and calcium. Here,it has formed black prismatic crystals. The white crystals are those of calcite and quartz. This sample,from Rio Marina on Elba,Italy,is 4.5 centimetres across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5138 px × 3425 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |