Small columnar prismatic crystals of Aquamarine, a mineral that is a variety of Beryl. Beryl is a beryllium aluminium cyclosilicate (Be3Al2 (SiO3)6 and has a hexagonal crystal system. Beryl is formed under high P/T conditions, most often in pegmatite. When pure it is colourless, but two well-known coloured varieties are Aquamarine (blue to cyan) and Emerald (green) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |