Cavansite and stilbite crystals. Cavansite crystals (blue) with a stilbite crystal embedded in them (translucent,white,top). Cavansite (calcium vanadium silicate),because of its rich colour and relative rarity,is a sought after collector's mineral. Stilbite (calcium aluminium silicate),a zeolite,has a micro-porous,sieve-like,crystal structure. This property means that it can be used to separate hydrocarbons in the process of petroleum refining | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5150 px × 3433 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |