Rock Identifier
Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) — mineral
mineral

Epidote

Ca2(Al,Fe)3(SiO4)3(OH)

AI-generated identification · may be incorrect

Hardness of 6-7 on Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, and monoclinic crystal system.

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Physical properties

Hardness of 6-7 on Mohs scale, distinct pistachio-green to yellowish-green color, vitreous luster, and monoclinic crystal system.

Formation & geological history

Forms primarily through regional metamorphism of igneous rocks and hydrothermal alteration of calcium-rich minerals.

Uses & applications

Used primarily as a mineral specimen for collectors and occasionally cut into cabochons for jewelry.

Geological facts

Epidote gets its name from the Greek word for 'increase', referring to the base of its crystal being longer than one side.

Field identification & locations

Identified easily by its characteristic pistachio-green color and crystal habit; commonly found in hydrothermal veins and alpine fissures.