sedimentary

Weathered sandstone pebble

Clastic sandstone, predominantly quartz (SiO₂) with possible feldspar and iron-oxide cement

AI-generated identification · may be incorrect

Light orange-brown, dull earthy luster, fine to medium granular texture, rounded by abrasion, and apparently lacking visible crystals or cleavage; hardness roughly 6–7 for quartz grains, but the rock may crumble along weak cemented zones.

Identified August 26, 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 accumulated, was compacted, and cemented in a sedimentary basin; the orange color likely comes from oxidized iron. Its precise geological age cannot be determined from the photograph.

Uses & applications

Common sandstone is used as building stone, paving, aggregate, and occasionally ornamental material; this small weathered pebble has mainly educational or decorative value.

Geological facts

The concave-looking face may be a natural weathering cavity or an eroded softer layer, while its rounded outline indicates transport in a stream, beach, or glacial environment.

Field identification & locations

Identify it by visible sand grains, earthy orange coloration, and lack of interlocking crystals; common worldwide, especially in sandstone regions and river gravels. A hand lens and dilute acid test can help distinguish it from carbonate rocks.