Gypsum crystals SEM

Gypsum crystals SEM

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Credit: POWER AND SYRED/SCIENCE PHOTO LIBRARY

Caption: 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.

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

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