mineral
Selentite
Gypsum (CaSO4·2H2O)
AI-generated identification · may be incorrectHardness of 2 on the Mohs scale, transparent to translucent, vitreous to pearly luster, monoclinic crystal system, perfect cleavage in one direction, specific gravity around 2.3
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Physical properties
Hardness of 2 on the Mohs scale, transparent to translucent, vitreous to pearly luster, monoclinic crystal system, perfect cleavage in one direction, specific gravity around 2.3
Formation & geological history
Formed through the evaporation of ancient saline bodies of water or through the hydration of anhydrite, often found in sedimentary environments.
Uses & applications
Commonly used in decorative objects, crystal healing, lamps, and as an interior display piece due to its soft texture and glowing appearance.
Geological facts
Selenite is named after the Greek goddess of the moon, Selene, due to its moon-like glow. It is very soft and can easily be scratched with a fingernail.
Field identification & locations
Easily identified by its very low hardness (scratched by fingernail) and fibrous or transparent crystal habit. Commonly sourced from Mexico, Morocco, and the USA.
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Metamorphic