mineral
Epidote
Epidote, Ca2(Al,Fe)3(SiO4)3(OH)
AI-generated identification · may be incorrectHardness of 6 to 7 on the Mohs scale, pistachio-green to dark green color, vitreous luster, monoclinic crystal system, and a specific gravity of 3.3 to 3.5.
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Physical properties
Hardness of 6 to 7 on the Mohs scale, pistachio-green to dark green color, vitreous luster, monoclinic crystal system, and a specific gravity of 3.3 to 3.5.
Formation & geological history
Formed through regional and contact metamorphism of igneous and sedimentary rocks rich in calcium, iron, and aluminum, as well as via hydrothermal alteration.
Uses & applications
Used primarily as a mineral specimen for collectors and occasionally cut into cabochons or beads for distinctive jewelry.
Geological facts
Epidote is the namesake mineral of the epidote group and is a common component in unakite, a popular ornamental rock.
Field identification & locations
Easily identified by its characteristic pistachio-green color and monoclinic prisms, frequently found in hydrothermal veins and alpine fissures 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