Tourmaline. A composite,doubly-terminated crystal of schorlite,with a little limonite and crystal of apatite. From 'Minerals of Cornwall and Devon' (1987) by P.G. Embrey and R.F. Symes | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 2836 px × 3081 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |