mineral
Epidote
Ca2(Al,Fe)3(SiO4)3(OH)
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale. Colors range from pistachio green to yellowish-green or black. Exhibits vitreous luster and has a monoclinic crystal system.
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Physical properties
Hardness of 6-7 on Mohs scale. Colors range from pistachio green to yellowish-green or black. Exhibits vitreous luster and has a monoclinic crystal system.
Formation & geological history
Forms primarily through regional and contact metamorphism of impure limestone and igneous rocks, as well as via hydrothermal alteration.
Uses & applications
Commonly collected by mineral enthusiasts and occasionally cut into cabochons or beads for distinctive jewelry pieces.
Geological facts
Epidote is the namesake mineral of the epidote group and is a key indicator mineral for metamorphic facies.
Field identification & locations
Identified easily by its characteristic pistachio-green color and monoclinic prisms. Found globally, especially in Austria, Pakistan, and the USA.
