Azurite crystals. The specimen at top right is polished,the specimen at bottom is in its natural state. Azurite is a hydrated copper carbonate mineral. Its name refers to its colour,azure. In medieval times,the mineral was ground up and used by painters as a blue pigment. Azurite's colour also makes it popular with mineral collectors | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Biddle, Paul |
Taille de l’image : | 4488 px × 4545 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |