mineral

Milky Quartz with Chlorite/Epidote

Silicon Dioxide (SiO2) with phyllosilicate or sorosilicate inclusions

AI-generated identification · may be incorrect

Hardness: 7 Mohs; Color: Opaque white to pale green with dark green streaks; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture)

Hardness: 7 Mohs
Color: Opaque white to pale green with dark green streaks
Luster: Vitreous to greasy

Identified July 6, 2026More mineral →

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Physical properties

Hardness: 7 Mohs; Color: Opaque white to pale green with dark green streaks; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture)

Formation & geological history

Formed in hydrothermal veins or pegmatites where silica-rich fluids crystallized. The green streaks are typically caused by inclusions of chlorite or epidote minerals during the quartz growth process.

Uses & applications

Commonly used as decorative stones, in landscaping, as tumbling rough for hobbyists, and in some metaphysical jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Green quartz varieties like this are often found in metamorphic belts where hydrothermal activity has occurred.

Field identification & locations

Identified by its ability to scratch glass and its characteristic greasy luster. Often found in riverbeds as water-worn pebbles or in mountain outcrops.