metamorphic
Pink quartzite pebble (tentative)
Quartzite, composed predominantly of quartz (SiO₂)
AI-generated identification · may be incorrectA rounded, pinkish-tan pebble with a fine, sugary/granular surface and dull to slightly sparkly luster. Quartz has Mohs hardness 7 and a trigonal crystal structure; quartzite is typically hard and lacks cleavage, but hardness and composition cannot be confirmed from the photo alone.
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Physical properties
A rounded, pinkish-tan pebble with a fine, sugary/granular surface and dull to slightly sparkly luster. Quartz has Mohs hardness 7 and a trigonal crystal structure; quartzite is typically hard and lacks cleavage, but hardness and composition cannot be confirmed from the photo alone.
Formation & geological history
Likely formed when quartz-rich sandstone was fused and recrystallized by heat and pressure, then rounded by transport in water. Its age and original source are not identifiable from the image.
Uses & applications
Quartzite is used as dimension stone, aggregate, and sometimes decorative material; this small pebble is mainly suitable for collecting or crafts.
Geological facts
Quartzite can resemble quartz-rich sandstone, but its grains are strongly interlocked after metamorphism.
Field identification & locations
Look for a hard, dense pebble with interlocking quartz grains; it commonly occurs in river, beach, and glacial deposits, sourced from quartzite-bearing terrain. The pink color may come from trace iron-bearing minerals; visual identification is provisional.
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