Surface flint. Flint,or flintstone,is a hard cryptocrystalline (fine crystal) form of the mineral quartz. Photographed on the South Downs,Sussex,UK | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chillmaid, Martyn F. |
Taille de l’image : | 3648 px × 4864 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |