mineral

Epidote in Quartz

SiO2 with Ca2Al2(Fe3+,Al)(SiO4)3(OH)

AI-generated identification · may be incorrect

Hardness: 7 for quartz, 6-7 for epidote; Color: White and translucent with pistachio-green patches; Luster: Vitreous to greasy; Crystal structure: Trigonal (quartz) and monoclinic (epidote)

Hardness: 7 for quartz, 6-7 for epidote
Color: White and translucent with pistachio-green patches
Luster: Vitreous to greasy

Identified August 3, 2026More mineral →

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Physical properties

Hardness: 7 for quartz, 6-7 for epidote; Color: White and translucent with pistachio-green patches; Luster: Vitreous to greasy; Crystal structure: Trigonal (quartz) and monoclinic (epidote)

Formation & geological history

Formed through hydrothermal processes where silica-rich fluids deposit quartz and secondary epidote crystallizes in fractures or cavities within rocks.

Uses & applications

Used in crystal healing, lapidary arts, and as collector specimens.

Geological facts

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

Field identification & locations

Easily identified by the striking contrast between the white/clear quartz and the characteristic pistachio-green epidote inclusions. Found worldwide in metamorphic and hydrothermal environments.