mineral
Gypsum
Gypsum (CaSO4·2H2O)
AI-generated identification · may be incorrectMohs hardness of 2, white to transparent color, pearly to vitreous luster, and monoclinic crystal system with perfect cleavage.
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Physical properties
Mohs hardness of 2, white to transparent color, pearly to vitreous luster, and monoclinic crystal system with perfect cleavage.
Formation & geological history
Formed through the precipitation of calcium sulfate from evaporating bodies of water in sedimentary environments.
Uses & applications
Widely used in the manufacturing of drywall, plaster of Paris, cement, and as a soil amendment in agriculture.
Geological facts
Gypsum can form massive tabular crystals known as desert rose formations or giant selenite crystal pillars in caves.
Field identification & locations
Identified easily by its extreme softness, allowing it to be scratched easily by a fingernail.
