sedimentary
Pebble
Lithic fragment
AI-generated identification · may be incorrectHardness varies by mineral composition, typically 6-7 on Mohs scale. Colors range widely from grey and brown to multicolored.
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Physical properties
Hardness varies by mineral composition, typically 6-7 on Mohs scale. Colors range widely from grey and brown to multicolored.
Formation & geological history
Formed through the mechanical weathering, erosion, and water-transport rounding of larger rock parent material over long geological timescales.
Uses & applications
Used in landscaping, decorative ground cover, construction aggregates, and pathway paving.
Geological facts
Water-transported pebbles undergo rounding in streams or beaches, a process called abrasion that smooths sharp edges.
Field identification & locations
Found abundantly in riverbeds, lake shores, and beaches globally; identified by its small, smooth, water-worn shape.
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