sedimentary

Likely fine-grained sandstone pebble

Quartz-rich sandstone; exact composition cannot be confirmed from the image

AI-generated identification · may be incorrect

Brown, dull and finely granular, with a rounded, flattened shape and no visible crystals. Typical sandstone hardness is about 6–7 Mohs, depending on cement and grain composition.

Identified October 8, 2026More sedimentary →

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Physical properties

Brown, dull and finely granular, with a rounded, flattened shape and no visible crystals. Typical sandstone hardness is about 6–7 Mohs, depending on cement and grain composition.

Formation & geological history

Likely formed as sand grains compacted and cemented into rock, then weathered and rounded by transport. Its age and precise formation environment cannot be determined visually.

Uses & applications

Common sandstone is used as building and paving stone; this small pebble is mainly suitable for collecting or display.

Geological facts

Sandstone’s grains and cement can vary widely, so appearance alone is insufficient for a precise identification.

Field identification & locations

Look for gritty texture and visible sand-sized grains; a hand lens or scratch and acid tests can help distinguish it from other rocks. Sandstone occurs worldwide in sedimentary basins and stream deposits.