mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

White to translucent, vitreous-to-waxy luster, irregular massive form with no visible crystal faces; Mohs hardness 7, conchoidal fracture, poor cleavage, specific gravity about 2.65.

Identified August 30, 2026More mineral →

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Physical properties

White to translucent, vitreous-to-waxy luster, irregular massive form with no visible crystal faces; Mohs hardness 7, conchoidal fracture, poor cleavage, specific gravity about 2.65.

Formation & geological history

Forms when silica-rich fluids crystallize in veins, cavities, and igneous or metamorphic rocks. Quartz is geologically widespread from ancient Precambrian rocks to modern hydrothermal deposits.

Uses & applications

Used for glass, ceramics, abrasives, engineered stone, and sometimes ornamental carving or inexpensive jewelry. This rough specimen has modest collector value.

Geological facts

The cloudy appearance results from microscopic fluid inclusions, fractures, or dispersed mineral impurities rather than a different quartz composition.

Field identification & locations

Common worldwide, especially in quartz veins and granitic or metamorphic terrains; identify it by its hardness, glassy fracture, and inability to scratch it with a steel knife. The image alone cannot exclude calcite or another white mineral without testing.