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 dark 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 dark green color, vitreous luster, and monoclinic crystal system.
Formation & geological history
Forms primarily through regional and contact metamorphism of igneous rocks rich in calcium and iron, as well as in hydrothermal veins.
Uses & applications
Used mainly as a mineral specimen for collectors and occasionally cut into cabochons for jewelry.
Geological facts
Its name derives 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 characteristic yellowish-green or pistachio-green color and prismatic crystal habit; commonly found in metamorphic terranes worldwide.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
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
Granite
Granite (Phaneritic intrusive igneous rock)
igneous