mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent to opaque white, with a vitreous luster and no cleavage. Its crystals are trigonal, though this rough, irregular piece does not show a clear crystal form.

Identified October 4, 2026More mineral →

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Physical properties

Hardness 7 Mohs; translucent to opaque white, with a vitreous luster and no cleavage. Its crystals are trigonal, though this rough, irregular piece does not show a clear crystal form.

Formation & geological history

Forms when silica-rich fluids crystallize in veins and cavities, and also occurs in igneous and metamorphic rocks. Quartz is found in rocks of many ages; the image alone cannot establish this specimen’s age or origin.

Uses & applications

Commonly used in glassmaking, ceramics, and electronics; attractive pieces are collected or cut for decorative objects and jewelry.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure.

Field identification & locations

The white, cloudy appearance and glassy luster are consistent with milky quartz, but the image does not confirm identity. It occurs worldwide, often in veins and pegmatites; hardness and lack of cleavage help distinguish it from softer lookalikes.