sedimentary
River Pebble
Siliciclastic detrital rock
AI-generated identification · may be incorrectHardness varies by mineral content (typically Mohs 6-7), smooth rounded shape, dull to vitreous luster, amorphous crystal aggregate, specific gravity around 2.65.
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Physical properties
Hardness varies by mineral content (typically Mohs 6-7), smooth rounded shape, dull to vitreous luster, amorphous crystal aggregate, specific gravity around 2.65.
Formation & geological history
Formed through mechanical weathering, transportation by water, and abrasion over geological timescales in riverbeds.
Uses & applications
Used widely in landscaping, decorative ground cover, construction aggregate, and garden pathways.
Geological facts
Water tumbling polishes rough edges of rocks over miles of river travel, creating these smooth smooth stones.
Field identification & locations
Found globally in active riverbeds, ancient stream terraces, and beaches. Identify by its smooth, water-worn texture.
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