mineral
Epidote
Ca2(Al,Fe)3(SiO4)3(OH)
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, monoclinic crystal system, and perfect one-directional cleavage.
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Physical properties
Hardness of 6-7 on Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, monoclinic crystal system, and perfect one-directional cleavage.
Formation & geological history
Forms primarily through hydrothermal alteration of igneous and metamorphic rocks, often found in low-grade metamorphic facies and veins.
Uses & applications
Used locally as a minor gemstone, carved into decorative objects, and highly sought after by mineral collectors.
Geological facts
Epidote derives its name from the Greek word for 'increase,' referring to the base of its crystal being longer than the other sides.
Field identification & locations
Easily identified by its characteristic pistachio-green color and columnar crystal habit; commonly found in alpine fissures and skarn deposits.
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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