sedimentary
River Pebble
Lithic fragment / Water-worn rock
AI-generated identification · may be incorrectHardness varies by mineral content, typically 6-7 on Mohs scale. Colors range from grey to brown, with a dull to sub-vitreous luster and rounded, smooth shape.
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Physical properties
Hardness varies by mineral content, typically 6-7 on Mohs scale. Colors range from grey to brown, with a dull to sub-vitreous luster and rounded, smooth shape.
Formation & geological history
Formed through mechanical weathering, erosion, and prolonged fluvial transport in riverbeds over thousands to millions of years.
Uses & applications
Used primarily in landscaping, decorative garden design, construction aggregates, and pathways.
Geological facts
The smooth, rounded shape is a direct result of abrasion as rocks collide with each other while being transported by flowing water.
Field identification & locations
Found abundantly in and along active or ancient riverbeds, stream banks, and beaches. Identify by its smooth, water-worn texture.
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