Specimen of Tourmaline from Antsirabe,Madagascar. Section of a crystal showing colour zoning. Tourmaline is a hexagonal mineral,vertically striated | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 3413 px × 2560 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |