Orthoclase mineral. Orthoclase,also known as alkali feldspar,is a silicate mineral common in igneous rocks. It forms monoclinic,or parallelogram-shaped crystals,as shown here. This sample measures 130 millimetres across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5172 px × 3550 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |