sedimentary
River Pebbles
Polymineralic lithic fragments
AI-generated identification · may be incorrectHardness varies from 6 to 7 on the Mohs scale depending on mineral content. Colors range from pink, red, brown, to grey, exhibiting a smooth, water-worn luster.
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Physical properties
Hardness varies from 6 to 7 on the Mohs scale depending on mineral content. Colors range from pink, red, brown, to grey, exhibiting a smooth, water-worn luster.
Formation & geological history
Formed by the mechanical weathering, transportation, and aqueous erosion of parent rocks over thousands to millions of years in riverbeds.
Uses & applications
Used widely in landscaping, decorative garden design, terrariums, and construction aggregate.
Geological facts
River pebbles are naturally rounded through attrition as water carries them along riverbeds, causing them to collide and smooth out over long distances.
Field identification & locations
Found abundantly along riverbanks, lake shores, and stream beds worldwide. Easily identified by their smooth, rounded surfaces and polished texture.
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