metamorphic

Pink quartzite pebble

Quartzite, composed predominantly of quartz (SiO₂)

AI-generated identification · may be incorrect

Pale pink to salmon, dull to slightly vitreous surface; quartz hardness is 7 Mohs. The image does not reveal crystal structure or cleavage; quartzite typically has interlocking quartz grains and no distinct cleavage.

Identified September 26, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed when quartz-rich sandstone was recrystallized by heat and pressure, usually during regional metamorphism. Its age cannot be determined from the photograph.

Uses & applications

Quartzite is used as crushed stone, paving and building stone; attractive pieces may be collected or used decoratively.

Geological facts

Pink coloration commonly comes from trace iron-bearing minerals or inclusions, rather than pink quartz alone.

Field identification & locations

A hard, quartz-rich pebble with a granular texture and no obvious layering supports quartzite identification; similar-looking pink rocks can be difficult to distinguish from the image alone. Quartzite occurs worldwide wherever quartz sandstone has been metamorphosed.