mineral
Epidote
Ca2Al2(Fe3+,Al)(SiO4)(Si2O7)O(OH)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, 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, pistachio-green to yellowish-green color, vitreous luster, and monoclinic crystal system.
Formation & geological history
Forms through metamorphism of igneous rocks and in hydrothermal veins, commonly associated with calc-silicate rocks.
Uses & applications
Used primarily as a mineral specimen for collectors and occasionally cut as a gemstone when found in massive forms like unakite.
Geological facts
Epidote gets its name from the Greek word for 'addition' because the base of its prism has one side longer than the other.
Field identification & locations
Easily identified in the field by its distinct pistachio-green color and prismatic crystal habit. Found worldwide, notably in Austria, Pakistan, and the USA.
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