mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Typically white to translucent with a vitreous to greasy luster; hardness 7 Mohs, no cleavage, conchoidal fracture, and specific gravity about 2.65. The specimen’s pale glow under blue/UV illumination may reflect translucency or minor fluorescence from inclusions, not diagnostic proof of a specific mineral.

Identified September 14, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize in veins, cavities, and igneous or metamorphic rocks. Quartz is common from Precambrian formations through modern hydrothermal systems.

Uses & applications

Used in glass, electronics, ceramics, abrasives, engineered stone, and jewelry; attractive translucent pieces are collected.

Geological facts

Quartz is one of Earth’s most abundant minerals and has a hexagonal crystal structure, though massive milky quartz may lack obvious crystal faces.

Field identification & locations

Identify by its glassy appearance, hardness sufficient to scratch ordinary glass, lack of cleavage, and conchoidal fracture; common worldwide, especially in hydrothermal veins and pegmatites.