Apatite crystals in their host rock. Apatite (a calcium phosphate mineral) is the mineral form of calcium that is used to make bones and teeth. It is one of the few minerals that are produced and used by biological systems. This sample was found in the St Gotthard Massif,Switzerland,and measures 120mm across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5125 px × 3417 px |
Model Release : | Non requis |
Restrictions : | - |