sedimentary
Small rounded pebble
Indeterminate lithic clast; likely weathered quartzite, sandstone, or chert
AI-generated identification · may be incorrectSmooth, rounded, brown-gray, and dull to slightly earthy; grain size and mineral composition are not resolvable from the image. Hardness is likely about Mohs 6–7 if quartz-rich, but cannot be measured visually.
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Physical properties
Smooth, rounded, brown-gray, and dull to slightly earthy; grain size and mineral composition are not resolvable from the image. Hardness is likely about Mohs 6–7 if quartz-rich, but cannot be measured visually.
Formation & geological history
Likely a naturally weathered and water-transported pebble formed from an older rock; its geological age and precise formation environment cannot be determined from the photograph.
Uses & applications
Primarily a decorative or collected specimen; value is negligible unless it has unusual provenance, fossil content, or distinctive mineralogy.
Geological facts
Rounding and surface smoothing generally indicate abrasion during stream, beach, or glacial transport.
Field identification & locations
Field identification requires examining grain texture, streak, hardness, and reaction to dilute acid; a close-up and scratch test would help distinguish quartzite, sandstone, chert, or another rock. Commonly found in riverbeds, beaches, and glacial deposits.
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