mineral

Milky Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Milky white to opaque; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (Conchoidal fracture); Specific gravity: 2.65

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

Identified June 25, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Milky white to opaque; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (Conchoidal fracture); Specific gravity: 2.65

Formation & geological history

Formed from silica-rich hydrothermal solutions cooling in veins or from the crystallization of pegmatites. The white color is caused by microscopic fluid inclusions of gas or liquid trapped during crystal growth.

Uses & applications

Used in glass manufacturing, as an abrasive, in the ceramics industry, and as an ornamental stone in landscaping or jewelry. Culturally used as a healing stone in metaphysical practices.

Geological facts

Quartz is the most abundant and widely distributed mineral found at Earth's surface. Milky quartz is the most common variety of crystalline quartz found in nature and is responsible for the white veins often seen in mountain ranges.

Field identification & locations

Identify in the field by its ability to scratch glass and steel, its white waxy appearance, and lack of cleavage. Commonly found in riverbeds, mountains, and as gravel.