mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, and monoclinic crystal system.
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Physical properties
Hardness of 6-7 on the Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, and monoclinic crystal system.
Formation & geological history
Forms primarily through regional metamorphism of igneous rocks and in hydrothermal veins, commonly associated with quartz and feldspar.
Uses & applications
Used as a minor gemstone, carved into ornamental objects, and prized by mineral collectors.
Geological facts
Epidote's name originates from the Greek word for 'increase,' referring to the base of its crystal being longer than one side.
Field identification & locations
Easily identified in the field by its characteristic pistachio-green color and columnar crystal habit; found globally in metamorphic terranes.
