Gypsum crystals. Coloured scanning electron micrograph (SEM) of crystals of calcium sulphate dihydrate, or gypsum. Gypsum is used as plaster of Paris.


Gypsum crystals. Coloured scanning electron micrograph (SEM) of crystals of calcium sulphate dihydrate, or gypsum. Gypsum is used as plaster of Paris. It is a white rock that is ground to a fine powder and then heated until it has lost about three quarters of its water content. When this powder is mixed with water the paste dries to a rock-hard finish. Magnification x2180 at 10cm wide.


Size: 4800px × 4800px
Photo credit: © POWER AND SYRED/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: calcium, chalk, chemical, chemistry, compound, compounds, crystal, crystalline, crystals, dihydrate, electron, gypsum, micrograph, microscope, mineral, paris, plaster, scanning, sem, sulphate