Quartz crystals. These transparent crystals are rhombohedral macrocrystals. Quartz is a form of silica (silicon dioxide) and is the second most abundant mineral in the Earth's crust after feldspar. This sample,from France,is about 30 centimetres long | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Goetgheluck, Pascal |
Bildgröße: | 5944 px × 4008 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |