mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
AI-generated identification · may be incorrectHardness is 6-7 on the Mohs scale. Typically displays pistachio green, yellowish-green, or blackish-green color with a vitreous luster and monoclinic crystal system.
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Physical properties
Hardness is 6-7 on the Mohs scale. Typically displays pistachio green, yellowish-green, or blackish-green color with a vitreous luster and monoclinic crystal system.
Formation & geological history
Forms primarily through regional and contact metamorphism of igneous rocks and limestone, often found in hydrothermal veins and altered rocks.
Uses & applications
Used primarily as a mineral specimen for collectors and occasionally cut into cabochons for ornamental jewelry.
Geological facts
Epidote gets its name from the Greek word for "increase," referring to the base of its crystal being longer than one side. It is a defining mineral of the greenschist facies.
Field identification & locations
Identified easily by its characteristic pistachio-green color and monoclinic prisms; commonly found in worldwide localities including Austria, Pakistan, and the USA.
