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 or microcrystalline. An ancient German name for this basalt type is "Mandelstein" or almond-rock,which refers to the almond shape the inclusions often display. Actual width is 200 mm | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |