mineral
Epidote
Calcium aluminum iron silicate hydroxide, Ca2(Al, Fe)3(SiO4)3(OH)
AI-generated identification · may be incorrectHardness is 6 to 7 on the Mohs scale. Displays characteristic pistachio-green to yellowish-green color with vitreous luster and monoclinic crystal system.
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Physical properties
Hardness is 6 to 7 on the Mohs scale. Displays characteristic pistachio-green to yellowish-green color with vitreous luster and monoclinic crystal system.
Formation & geological history
Forms primarily through regional and contact metamorphism of igneous rocks and impure limestones, as well as hydrothermal alteration.
Uses & applications
Commonly collected as mineral specimens and occasionally cut into gemstones or ornamental beads.
Geological facts
Epidote is the primary mineral defining epidosite, a metamorphic rock composed mainly of epidote and quartz.
Field identification & locations
Identified easily by its distinct pistachio-green color and prismatic crystal habit; found worldwide in metamorphic terrains.
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Other mineral specimens
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