Fluorite crystals. Fluorite,or fluorspar (calcium fluoride) is a fairly common mineral,extensively mined for use in steelmaking (as a flux) and in other industrial processes. It occurs in cubic crystal groups that can vary in colour from soft green and yellow to colourless and deep purple. This sample,from France,is 12 centimetres wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Goetgheluck, Pascal |
Taille de l’image : | 4513 px × 3880 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |