mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, pistachio-green to dark green color, vitreous luster, monoclinic crystal system, and a distinct basal cleavage.
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Physical properties
Hardness of 6-7 on the Mohs scale, pistachio-green to dark green color, vitreous luster, monoclinic crystal system, and a distinct basal cleavage.
Formation & geological history
Forms primarily through regional and contact metamorphism of igneous rocks rich in calcium and iron, as well as through hydrothermal alteration.
Uses & applications
Used primarily as a minor gemstone for cabochons and beads, and highly sought after by mineral collectors worldwide.
Geological facts
The name epidote derives from the Greek word for 'increase,' referring to the base of its prism having one side longer than the other.
Field identification & locations
Easily identified in the field by its characteristic yellowish-green or pistachio-green color and columnar crystal habits.
More like this
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