mineral
Epidote
Ca2Al2(Fe3+,Al)(SiO43)(Si2O7)O(OH)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, pistachio-green to yellowish-green color, vitreous luster, monoclinic crystal system, and uneven cleavage.
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Physical properties
Hardness of 6-7 on the Mohs scale, pistachio-green to yellowish-green color, vitreous luster, monoclinic crystal system, and uneven cleavage.
Formation & geological history
Forms primarily through regional and contact metamorphism of igneous rocks and impure limestones, as well as hydrothermal alteration.
Uses & applications
Used mainly as a gemstone, carved into ornamental objects, and collected by mineral enthusiasts.
Geological facts
Epidote is the primary mineral defining epidosite, a metamorphic rock composed mainly of epidote and quartz. It is often found associated with quartz, feldspar, and chlorite.
Field identification & locations
Easily identified in the field by its distinct pistachio-green color and prismatic crystal habit. Commonly found in Austria, France, Pakistan, and the United States.
