Melaphyre igneous rock. This rock consists of isolated feldspar mineral crystals held within dark,fine-grained igneous rock. Igneous rock is rock that has solidified from molten magma. This pattern of large mineral crystals within a matrix is known as porphyritic texture. This sample measures 110 millimetres across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 4923 px × 3525 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |