mineral

Milky Quartz

Quartz (SiO2)

AI-generated identification · may be incorrect

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

Identified July 6, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed in hydrothermal veins, pegmatites, and as a primary mineral in igneous, metamorphic, and sedimentary environments. Many milky quartz specimens contain microscopic fluid inclusions that give them their cloudy appearance.

Uses & applications

Used in glass manufacturing, electronics (piezoelectric properties), abrasives, and as decorative gravel or gemstone cabochons.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz's white color is actually caused by tiny gas or liquid bubbles trapped during the crystal's growth.

Field identification & locations

Identified by its hardness (scratches glass), white color, and lack of cleavage. It is ubiquitous in most geological environments worldwide, often appearing as veins in darker rock.