metamorphic

Light-colored rounded pebble, likely quartzite

Quartzite, composed predominantly of recrystallized quartz (SiO₂)

AI-generated identification · may be incorrect

Pale gray-white, fine- to medium-grained, dull to sugary luster; quartz hardness about 7 Mohs and no cleavage. The image shows a rounded, weathered specimen, but mineral composition cannot be confirmed visually.

Identified September 25, 2026More metamorphic →

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Physical properties

Formation & geological history

Quartzite forms when quartz-rich sandstone is recrystallized by heat and pressure; its age and source environment cannot be determined from the image.

Uses & applications

Quartzite is used as building and paving stone, aggregate, and decorative stone; this small pebble is mainly suitable for collecting or landscaping.

Geological facts

Quartz grains in true quartzite are tightly interlocked, so it tends to fracture through grains rather than around them.

Field identification & locations

The pale, compact appearance is consistent with quartzite, but a close inspection for fused quartz grains or testing is needed to distinguish it from other light-colored rocks. Quartzite occurs worldwide in metamorphic belts and river or beach gravels.