mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
Hardness: 6-7 on Mohs scale. Color: Pistachio-green, yellowish-green, or brownish-green. Luster: Vitreous to resinous. Crystal System: Monoclinic. Cleavage: Perfect in one direction.
- Hardness
- 6-7 on Mohs scale
- Color
- Pistachio-green, yellowish-green, or brownish-green
- Luster
- Vitreous to resinous
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Pistachio-green, yellowish-green, or brownish-green. Luster: Vitreous to resinous. Crystal System: Monoclinic. Cleavage: Perfect in one direction.
Formation & geological history
Formed through regional and contact metamorphism of low to medium grade, typically in hydrothermal veins, skarns, and altered igneous rocks.
Uses & applications
Used primarily as a mineral specimen for collectors and occasionally cut into cabochons or beads for jewelry.
Geological facts
The name epidote comes from the Greek word for 'increase', referring to the base of its crystal being longer than one side.
Field identification & locations
Easily identifiable by its characteristic pistachio-green color and monoclinic prismatic crystals. Commonly found worldwide, notably in Austria, France, Italy, and the USA.
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