sedimentary
Beach Pebbles and Shells
Mixed Lithology Sedimentary Clasts and Biogenic Carbonate
AI-generated identification · may be incorrectHardness varies from 3 to 7 on the Mohs scale depending on the mineral; colors include white, grey, brown, and multicolored; luster ranges from vitreous to dull.
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Physical properties
Hardness varies from 3 to 7 on the Mohs scale depending on the mineral; colors include white, grey, brown, and multicolored; luster ranges from vitreous to dull.
Formation & geological history
Formed through mechanical weathering, wave action, and deposition of various rock fragments and marine shells in coastal environments over recent geological timescales.
Uses & applications
Used in landscaping, decorative arts, home decor, and educational collections.
Geological facts
These collections often contain quartz, quartzite, basalt, and calcium carbonate sea shells smoothed by constant wave abrasion.
Field identification & locations
Easily identified by their rounded, water-worn shapes found along riverbeds, lakeshores, and ocean beaches worldwide.
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