mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

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

Identified April 19, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed through hydrothermal processes or during the final stages of cooling in igneous magma bodies. It is found in veins and as a primary constituent of granites and quartzites across almost all geological ages.

Uses & applications

Used in electronics for its piezoelectric properties, as an abrasive, in glass manufacturing, as an aggregate in construction, and in metaphysical or ornamental jewelry.

Geological facts

Milky Quartz gets its white color from tiny fluid inclusions of gas or liquid trapped during the crystal's growth. It is the most common variety of crystalline quartz.

Field identification & locations

Identify by its hardness (it will scratch glass), its lack of cleavage, and its distinctive milky appearance. It is ubiquitous in mountainous regions and riverbeds worldwide.