mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
AI-generated identification · may be incorrectHardness 6-7 on Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, monoclinic crystal system, and perfect one-way cleavage.
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Physical properties
Hardness 6-7 on Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, monoclinic crystal system, and perfect one-way cleavage.
Formation & geological history
Forms primarily through hydrothermal alteration and regional metamorphism of igneous and sedimentary rocks rich in calcium and iron.
Uses & applications
Used mainly as a mineral specimen for collectors and occasionally cut into cabochons for niche jewelry.
Geological facts
Its name comes from the Greek word for 'addition,' referring to the base of its prismatic crystals being longer than the other.
Field identification & locations
Easily identified by its characteristic pistachio-green color and monoclinic prisms; commonly found in hydrothermal veins and altered volcanic rocks.
