Melaphyr is a volcanic rock with a characteristic makeup named porphyritic. Small voids in a finely textured basaltic host-rock are fully or partly fi

---

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"

---

Size: 5616px × 3744px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: almond-rock, amorphous, basalt, basaltic, calcite, crystalline, feldspar, filled, melaphyr, microcrystalline, porphyritic, porphyry, quartz, rock, rocks, stone, texture, volcanic