mineral
Epidote on Matrix
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
AI-generated identification · may be incorrectHardness 6-7 on Mohs scale, pistachio-green to dark green color, vitreous to resinous luster, monoclinic crystal system, perfect cleavage in one direction, specific gravity 3.3-3.5.
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Physical properties
Hardness 6-7 on Mohs scale, pistachio-green to dark green color, vitreous to resinous luster, monoclinic crystal system, perfect cleavage in one direction, specific gravity 3.3-3.5.
Formation & geological history
Forms primarily through regional metamorphism of igneous rocks and hydrothermal alteration, typically found in veins and cavities of altered rocks.
Uses & applications
Used primarily as a mineral specimen for educational and collector purposes, occasionally cut into cabochons for jewelry.
Geological facts
Epidote is the namesake of the epidote group of minerals and derives its name from the Greek word for 'increase' because its base of a crystal is longer than the other.
Field identification & locations
Identify by its distinctive pistachio-green color and monoclinic prismatic crystals usually growing on a lighter matrix; found globally with notable localities in Austria, Pakistan, and the USA.
