sedimentary

Weathered stone pebble (exact rock type indeterminate)

Unidentified fine-grained rock; composition cannot be determined from the image

AI-generated identification · may be incorrect

Small, rounded-to-angular brown-gray pebble with a dull, weathered surface; grain size, hardness, cleavage, and specific gravity cannot be established visually. It could be a fine-grained sedimentary rock or another common rock type.

Identified October 4, 2026More sedimentary →

Explore Weathered stone pebble (exact rock type indeterminate) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Likely detached from bedrock and shaped by weathering and transport; its geological age and original formation environment are unknown.

Uses & applications

No apparent commercial use; may be kept as a casual natural-history specimen.

Geological facts

Color and shape alone are insufficient for reliable identification. A fresh broken surface, magnification, and hardness or streak tests would help distinguish likely rock types.

Field identification & locations

The specimen’s small size and worn edges are consistent with natural abrasion, but the image does not show diagnostic layering, crystals, or fossils. Similar pebbles occur in streambeds, beaches, and glacial deposits.