mineral

Milky Quartz

Silicon Dioxide (SiO2)

Hardness: 7.0 (Mohs scale); Color: White to translucent; Luster: Vitreous to greasy; Crystal structure: Hexagonal/Trigonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65.

Hardness: 7
Color: White to translucent
Luster: Vitreous to greasy

Identified May 17, 2026More mineral →

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Physical properties

Hardness: 7.0 (Mohs scale); Color: White to translucent; Luster: Vitreous to greasy; Crystal structure: Hexagonal/Trigonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65.

Formation & geological history

Formed in hydrothermal veins, pegmatites, and as a primary constituent in igneous rocks like granite. Its cloudy appearance is caused by tiny inclusions of gas or liquid trapped during crystal growth.

Uses & applications

Used in glass making, ceramics, as an abrasive, and in electronics due to piezoelectric properties. Common in landscaping and as a decorative mineral for novice collectors.

Geological facts

Quartz is the second most abundant mineral in the 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 waxy look. Often found in gold-bearing quartz veins. Look for it in mountainous regions or inside riverbeds.