mineral
Gypsum
Calcium Sulfate Dihydrate (CaSO4·2H2O)
AI-generated identification · may be incorrectHardness of 2 on the Mohs scale, white or transparent color, pearly to vitreous luster, monoclinic crystal system, and perfect cleavage.
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Physical properties
Hardness of 2 on the Mohs scale, white or transparent color, pearly to vitreous luster, monoclinic crystal system, and perfect cleavage.
Formation & geological history
Formed through the evaporation of ancient saline bodies of water, typically in sedimentary depositional environments.
Uses & applications
Widely used in drywall manufacturing, plaster of Paris, soil conditioning, and cement production.
Geological facts
Gypsum can form massive transparent crystals known as selenite, some of which reach colossal sizes in caves like Naica, Mexico.
Field identification & locations
Easily identified by its softness, as it can be scratched with a fingernail; commonly found in desert playas and sedimentary evaporite basins.
