mineral

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

White, opaque to translucent mineral with a vitreous-to-waxy luster and irregular conchoidal fracture; Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65.

Identified August 9, 2026More mineral →

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Physical properties

White, opaque to translucent mineral with a vitreous-to-waxy luster and irregular conchoidal fracture; Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65.

Formation & geological history

Forms when silica-rich fluids crystallize in veins, cavities, and igneous or metamorphic rocks; quartz is generally ancient, ranging from Precambrian to modern hydrothermal deposits. The rounded shape suggests natural abrasion or tumbling.

Uses & applications

Used for glass, ceramics, engineered stone, abrasives, and electronics; attractive pieces are sold as inexpensive cabinet specimens or lapidary material.

Geological facts

Milky appearance results from microscopic fluid inclusions, fractures, or defects scattering light. It should scratch ordinary glass but not be scratched by a steel knife.

Field identification & locations

Common worldwide, especially in quartz veins, pegmatites, and eroded stream gravels. Confirm with hardness, lack of cleavage, and conchoidal fracture; the image alone cannot exclude white calcite or another pale mineral.