Selenite. View of a sample of selenite,a form of gypsum (hydrated calcium sulphate). Gypsum is a common mineral deposit of precipitated salt (sedimentary evaporite). It is used in the making of plaster of Paris for construction,as a retarder in Portland cement,as a flux for pottery and as a fertilizer. This sample is from the Isle of Sheppey,Kent,England | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Land, Martin |
Taille de l’image : | 4878 px × 3595 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |