mineral
Epidote
Ca2(Al,Fe)3(SiO4)3(OH)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, characteristic 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, characteristic pistachio-green to yellowish-green color, vitreous luster, and monoclinic crystal system.
Formation & geological history
Forms primarily through regional and contact metamorphism of impure calcareous rocks and volcanic activity.
Uses & applications
Used primarily as a minor gemstone, in metaphysical healing practices, and as a mineral specimen for collectors.
Geological facts
Epidote gets its name from the Greek word for 'increase', referring to the base of its crystal being longer than one side.
Field identification & locations
Easily identified by its unique pistachio-green color and columnar crystal habits, commonly found in hydrothermal veins and altered igneous rocks.
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Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic