Rock Identifier
Selenite (Gypsum (CaSO4·2H2O)) — mineral
mineral

Selenite

Gypsum (CaSO4·2H2O)

AI-generated identification · may be incorrect

Mohs hardness of 2, white or transparent color, pearly to vitreous luster, monoclinic crystal system, perfect cleavage.

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Physical properties

Mohs hardness of 2, white or transparent color, pearly to vitreous luster, monoclinic crystal system, perfect cleavage.

Formation & geological history

Formed through the evaporation of salt-water lakes and ancient sea beds over millions of years.

Uses & applications

Used in decorative carvings, holistic healing, fertilizer, and drywall manufacturing.

Geological facts

Selenite is named after the Greek goddess of the moon due to its soft, glowing reflection.

Field identification & locations

Easily identified by its soft texture that can be scratched with a fingernail and its fibrous appearance.