sedimentary

Iron-rich sandstone or lateritic pebble

Ferruginous sandstone; chiefly quartz (SiO₂) cemented by iron oxides such as hematite/goethite

AI-generated identification · may be incorrect

Reddish-orange, dull to earthy luster, fine-grained and rounded from abrasion; estimated Mohs hardness 5–7, with no visible cleavage. The smooth, flattened form suggests a naturally tumbled pebble, though the image alone cannot distinguish sandstone from compact laterite.

Identified August 26, 2026More sedimentary →

Explore Iron-rich sandstone or lateritic 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

Likely formed when quartz-rich sediment was cemented and stained by oxidized iron, or when deeply weathered soil/laterite hardened; age is indeterminate and may range from recent to ancient depending on source.

Uses & applications

Common material has little commercial value, but ferruginous sandstone can be used locally as building stone, aggregate, or decorative stone; attractive pieces may be collected.

Geological facts

The orange-red color is produced by iron oxides rather than copper. Fine sedimentary texture and earthy surface distinguish it from glass, fired ceramic, or most crystalline igneous rocks.

Field identification & locations

Look for sand-sized grains, reddish powder or streak, moderate heft, and weak reaction to dilute hydrochloric acid; a ceramic scratch test and fresh broken surface help confirm it. Common in arid, tropical, and iron-rich weathering environments.