mineral

Milky Quartz with Chlorite/Amphibite Inclusions

Silicon Dioxide (SiO2) with various mineral inclusions

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale), Color: White to milky white with dark green/grey streaks, Luster: Vitreous to greasy, Crystal Structure: Trigonal/Hexagonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Identified June 30, 2026More mineral →

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Physical properties

Formation & geological history

Hydrothermal formation in veins or pegmatites. Formed when silica-rich fluids cool and crystallize in rock fractures, often trapping surrounding minerals like chlorite or hornblende during growth.

Uses & applications

Used in glass manufacturing, electronics (as a source of silicon), abrasives, and as decorative garden stone or lapidary material.

Geological facts

Milky quartz owes its white color to millions of microscopic fluid inclusions trapped during the crystal's growth. It is the most common variety of crystalline quartz found on Earth's crust.

Field identification & locations

Identify by its inability to be scratched by steel, its white coloring, and the lack of distinct cleavage. Commonly found in mountainous regions, riverbeds, and as vein material in various host rocks.