mineral
Epidote
Ca2(Al,Fe)3(SiO4)3(OH)
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, pistachio-green to blackish-green color, vitreous luster, monoclinic crystal system, perfect cleavage in one direction.
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Physical properties
Hardness of 6-7 on Mohs scale, pistachio-green to blackish-green color, vitreous luster, monoclinic crystal system, perfect cleavage in one direction.
Formation & geological history
Forms primarily through hydrothermal alteration of igneous and metamorphic rocks, often in skarns and low-grade regional metamorphic environments.
Uses & applications
Used primarily as a minor gemstone, in ornamental carvings, and as a sought-after specimen for mineral collectors.
Geological facts
Epidote derives its name from the Greek word for 'increase', referencing the base of its crystal prism being longer than the other.
Field identification & locations
Identified by its characteristic pistachio-green color and crystal habit. Found globally, notably in Austria, Pakistan, and the USA.
