igneous/metamorphic
General river rock or weathered cobble
Mixed rock composition
Hard, rounded shape due to water erosion, greenish-gray hue with reddish/brownish spots likely due to iron oxidation.
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Physical properties
Hard, rounded shape due to water erosion, greenish-gray hue with reddish/brownish spots likely due to iron oxidation.
Formation & geological history
Formed through various geological processes, then weathered and rounded by water transport in a riverbed or shoreline.
Uses & applications
Commonly used in landscaping, decorative ground cover, or casual collecting.
Geological facts
River rocks are naturally smoothed over time by the abrasive action of water and other rocks.',
Field identification & locations
Found universally in riverbeds, streams, and beaches. Identified by its smooth, rounded appearance.
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