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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Natural History Museum, London |
Taille de l’image : | 2836 px × 3081 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |