mineral

Milky quartz

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Likely massive milky quartz: white to translucent, vitreous-to-dull luster, Mohs hardness 7, trigonal crystal structure, no cleavage and irregular to conchoidal fracture; specific gravity about 2.65.

Identified October 13, 2026More mineral →

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Physical properties

Likely massive milky quartz: white to translucent, vitreous-to-dull luster, Mohs hardness 7, trigonal crystal structure, no cleavage and irregular to conchoidal fracture; specific gravity about 2.65.

Formation & geological history

Forms when silica-rich fluids crystallize in veins and cavities, or as quartz-rich material in igneous and metamorphic rocks. Quartz is common across geologic ages; the specimen's age and exact origin cannot be determined from the photo.

Uses & applications

Quartz is used in glassmaking, electronics, abrasives, and construction aggregate; attractive pieces are collected or used decoratively.

Geological facts

The cloudy appearance usually comes from microscopic fluid inclusions or defects. The image is consistent with quartz, but visual identification alone cannot rule out other pale minerals.

Field identification & locations

Look for hardness sufficient to scratch glass, absence of cleavage, and a glassy fracture; avoid scratching valuable specimens. Quartz occurs worldwide, especially in veins and granitic or metamorphic terrains.