mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale), Color: White to translucent cloudy, Luster: Vitreous to greasy, Crystal structure: Trigonal/Hexagonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Identified June 8, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: White to translucent cloudy, Luster: Vitreous to greasy, Crystal structure: Trigonal/Hexagonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Formation & geological history

Formed through the cooling of silica-rich magma or from hydrothermal veins. The milky appearance is caused by tiny fluid or gas inclusions trapped during crystal growth. Found in various geological ages and environments.

Uses & applications

Used in glass manufacturing, electronics (due to piezoelectric properties), construction aggregates, and occasionally as minor gemstones or decorative landscaping stones.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is the most common variety of crystalline quartz found in nature.

Field identification & locations

Identify in the field by its hardness (scratches glass), lack of cleavage, and white opaque color. It is ubiquitous globally, often found in mountain ranges, pebble beaches, and stream beds.