metamorphic

Weathered quartzite pebble

Quartzite, composed predominantly of quartz (SiO₂)

AI-generated identification · may be incorrect

Pale tan to cream, matte and granular with rounded, weathered surfaces; quartz hardness 7 Mohs and no cleavage. The photo alone cannot confirm the rock identification; it may also be a quartz-rich sandstone or another light-colored stone.

Identified September 24, 2026More metamorphic →

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Physical properties

Formation & geological history

Quartzite forms when quartz sandstone is recrystallized by heat and pressure, at various geological ages; weathering and abrasion can round exposed fragments.

Uses & applications

Used as aggregate, paving or building stone; attractive pieces may be kept as garden or display specimens.

Geological facts

Quartzite is often very hard and resistant to weathering, though its appearance can resemble sandstone or limestone.

Field identification & locations

Look for a hard, quartz-rich texture and grains that appear fused; a scratch test or fresh break can help distinguish it, but visual identification is uncertain here. Similar stones occur widely in gravel, stream, and glacial deposits.