Melaphyr is a volcanic rock with a characteristic makeup named porphyritic. Small voids in a finely textured basaltic host-rock are fully or partly filled with quartz,feldspar,calcite or other minerals,which may be amorphous to microcrystalline. An ancient German name for this basalt type is "Mandelstein" or almond-rock,which refers to the almond shape the inclusions often display | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5616 px × 3744 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |