mineral

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

White, opaque to translucent, with a vitreous to slightly dull luster and no visible cleavage; Mohs hardness 7, trigonal crystal structure, specific gravity about 2.65. The rounded shape indicates natural abrasion or tumbling.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed when silica-rich fluids crystallized quartz in veins, then weathering and transport rounded it. Quartz veins occur in rocks of many ages; the specimen’s precise age and source cannot be determined from the image.

Uses & applications

Quartz is used in glassmaking, electronics, abrasives, and decorative objects; this small pebble is mainly suitable for collecting or craft use.

Geological facts

Milky appearance comes from microscopic fluid inclusions or defects that scatter light.

Field identification & locations

Look for hardness sufficient to scratch glass, lack of cleavage, and a white streak; common in river gravels and quartz veins worldwide. The image alone cannot establish its exact locality or distinguish it confidently from other white minerals.