mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: White, translucent to opaque. Luster: Vitreous to greasy. Crystal structure: Trigonal (often found as massive aggregates). Cleavage: None (conchoidal fracture). Specific Gravity: 2.65.

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

Identified May 7, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the crystallization of silica-rich hydrothermal fluids in veins or as a major constituent in igneous and metamorphic rocks. Milky color is caused by microscopic inclusions of fluids or gas trapped during crystal growth.

Uses & applications

Used in glassmaking, abrasives, silicon production, and electronics. Also popular for landscaping, lapidary work like tumbled stones, and as metaphysical specimens.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz specifically gets its appearance from 'ghostly' pockets of liquids and gases that scatter light.

Field identification & locations

Identify by its hardness (scratches glass), lack of cleavage, and waxy/vitreous luster. Found globally in almost every geological environment, especially mountain ranges and riverbeds.