mineral

Milky quartz

Quartz (SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; white to translucent with a vitreous-to-waxy luster and irregular fracture. Trigonal crystal system, but this rough piece shows no distinct crystal faces or cleavage.

Identified September 30, 2026More mineral →

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Physical properties

Hardness 7 Mohs; white to translucent with a vitreous-to-waxy luster and irregular fracture. Trigonal crystal system, but this rough piece shows no distinct crystal faces or cleavage.

Formation & geological history

Forms when silica-rich fluids crystallize in veins and cavities, commonly in igneous and metamorphic rocks. Quartz occurs across geological ages; the specimen’s age and locality cannot be determined from the image.

Uses & applications

Used in glassmaking, electronics, and decorative stone; attractive pieces are collected or used in jewelry.

Geological facts

Its cloudy appearance results from microscopic fluid or gas inclusions and other defects within the quartz.

Field identification & locations

Likely quartz based on its pale color, translucency, and uneven fracture; confirm with a scratch test (quartz scratches glass). Common worldwide in quartz veins, pegmatites, and many rock types.