sedimentary

Weathered sandstone pebble

Quartz-rich sandstone, commonly arkosic or ferruginous sandstone

AI-generated identification · may be incorrect

Typically Mohs 6–7 for quartz grains, with a sandy texture, brown to reddish coloration from iron oxides, dull to weakly glossy luster, and no visible cleavage. Rounded edges and small pits indicate abrasion and weathering; exact composition cannot be confirmed from the image alone.

Identified September 10, 2026More sedimentary →

Explore Weathered sandstone pebble 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

Formed when sand-sized grains, mainly quartz with possible feldspar, were compacted and cemented in an ancient river, beach, dune, or shallow-marine environment. Its rounded shape likely developed through prolonged transport; age is indeterminate.

Uses & applications

Used as a landscaping, aggregate, and decorative stone; attractive polished pieces may be used in craftwork, but this specimen has little gem value.

Geological facts

The rusty color generally reflects hematite or limonite cement. Small cavities may represent weathered grains or softer inclusions removed during erosion.

Field identification & locations

Identify it by visible granular texture, earthy brown-red color, rounded waterworn form, and lack of strong cleavage or crystal faces. Common in streambeds, beaches, gravel deposits, and eroded sandstone terrains worldwide.