mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Opaque white to creamy; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Opaque white to creamy
Luster: Vitreous to greasy

Identified June 13, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Opaque white to creamy; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed in hydrothermal veins, pegmatites, and as a component of igneous rocks. The milky appearance is caused by tiny inclusions of gas or liquid trapped during crystal growth.

Uses & applications

Used in glassmaking, abrasives, electronics (piezoelectric properties), and frequently as decorative gravel or landscaping stone.

Geological facts

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

Field identification & locations

Identify in the field by its hardness (it can scratch glass), lack of cleavage, and waxy or glassy luster. Found in almost all geological environments worldwide.