mineral
Selenite
Gypsum (CaSO4·2H2O)
AI-generated identification · may be incorrectHardness of 2 on the Mohs scale, transparent to translucent white color, pearly to vitreous luster, and monoclinic crystal system.
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Physical properties
Hardness of 2 on the Mohs scale, transparent to translucent white color, pearly to vitreous luster, and monoclinic crystal system.
Formation & geological history
Forms through the evaporation of salt-water lakes and ancient sea beds in sedimentary environments.
Uses & applications
Used widely in decorative carvings, holistic healing, and as a raw material for plaster of Paris.
Geological facts
Selenite is the fibrous, crystallized variety of the mineral gypsum and exhibits a distinct chatoyant cat's-eye sheen.
Field identification & locations
Easily identified by its extreme softness—it can be scratched easily with a fingernail—and perfect cleavage.
