sedimentary
River Rock
Sedimentary clast
AI-generated identification · may be incorrectHardness varies depending on composition (often 5-7), brownish-gray color, dull luster, smooth weathered surface
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Physical properties
Hardness varies depending on composition (often 5-7), brownish-gray color, dull luster, smooth weathered surface
Formation & geological history
Formed by weathering and erosion of larger rock formations, subsequently smoothed by water transport in a river or stream
Uses & applications
Commonly used in landscaping, construction aggregate, or decorative gardens
Geological facts
River rocks can be composed of various minerals depending on the source rock, often quartz, feldspar, or sedimentary rock fragments.
Field identification & locations
Identified by its rounded, smooth shape caused by water erosion. Found in riverbeds, streams, and beaches globally.
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