sedimentary

Small weathered pebble, likely limestone

Unidentified carbonate-rich sedimentary rock; possibly micritic limestone

AI-generated identification · may be incorrect

Gray-beige, dull and fine-grained, with a small dark cavity; hardness and mineral composition cannot be confirmed from the image. The rounded shape and surface suggest natural abrasion and weathering.

Identified October 15, 2026More sedimentary →

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Physical properties

Formation & geological history

Likely formed from compacted carbonate sediment and later rounded by water or other abrasion. Its age and precise formation environment cannot be determined visually.

Uses & applications

No notable industrial or jewelry use is apparent; it is suitable as a commonplace teaching or collecting specimen.

Geological facts

The dark spot may be a natural pore, weathered inclusion, or fossil fragment, but the image does not show enough detail to identify it.

Field identification & locations

A small, rounded pebble with a pale gray, fine-grained surface is consistent with limestone, though many rocks look similar. A hardness or acid test and a fresh broken surface would help distinguish it.