mineral

Milky Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: White to opaque; Luster: Vitreous to greasy; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Hardness: 7 on Mohs scale
Color: White to opaque
Luster: Vitreous to greasy

Identified June 13, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: White to opaque; Luster: Vitreous to greasy; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Formation & geological history

Formed in hydrothermal veins and pegmatites through the cooling of silica-rich fluids. It can be found in a variety of geological ages and environments, often associated with igneous and metamorphic formations.

Uses & applications

Used in the glass-making industry, as an abrasive, in electronics for its piezoelectric properties, and as a common gemstone for jewelry and spiritual practices.

Geological facts

The white color is caused by tiny inclusions of gas or liquid trapped during crystal growth. It is one of the most abundant minerals on Earth's crust.

Field identification & locations

Identify by its hardness (scratches glass), lack of cleavage, and characteristic opaque white appearance. Found worldwide in river beds, beaches, and mountain terrains.