mineral

Milky Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture).

Hardness: 7 on Mohs scale
Color: Milky white to translucent
Luster: Vitreous to greasy

Identified July 3, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture).

Formation & geological history

Forms in hydrothermal veins, pegmatites, and as a primary constituent of many igneous rocks. The cloudy appearance is caused by tiny fluid or gas inclusions trapped during crystal growth.

Uses & applications

Used in glass making, as an abrasive, in electronics for its piezoelectric properties, and widely used in landscaping and jewelry as a decorative stone.

Geological facts

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

Field identification & locations

Identify in the field by its hardness (will scratch glass), lack of cleavage, white color, and glassy luster. It is found globally in almost all geological environments.