sedimentary
Small water-worn pebble, likely quartz-rich
Rock fragment of uncertain composition; possibly quartzite or chert
AI-generated identification · may be incorrectSmooth, rounded, tan-brown pebble with a subtle sheen; precise hardness, mineral composition, and crystal structure cannot be determined from the image. Quartz-rich material would have Mohs hardness near 7 and no cleavage.
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Physical properties
Smooth, rounded, tan-brown pebble with a subtle sheen; precise hardness, mineral composition, and crystal structure cannot be determined from the image. Quartz-rich material would have Mohs hardness near 7 and no cleavage.
Formation & geological history
Rounded by abrasion in a stream or along a shore; its age and original rock type cannot be established visually.
Uses & applications
Primarily a natural collectible or decorative pebble; similar durable stones are used in landscaping and polished crafts.
Geological facts
Its smooth shape indicates prolonged transport or wave action, but color alone is not diagnostic of a specific rock.
Field identification & locations
A tiny, rounded pebble on a plain surface; field identification requires testing hardness, streak, and translucency. Pebbles of this size and appearance are common worldwide.
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