sedimentary

Sandstone with Iron Staining

Arenite (SiO2 with Fe2O3)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs); Color: Tan, brown, and reddish-orange; Luster: Dull/Earthy; Crystal structure: Granular/Clastic; Cleavage: None

Hardness: 6-7 (Mohs)
Color: Tan, brown, and reddish-orange
Luster: Dull/Earthy

Identified July 6, 2026More sedimentary →

Explore Sandstone with Iron Staining in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Hardness: 6-7 (Mohs); Color: Tan, brown, and reddish-orange; Luster: Dull/Earthy; Crystal structure: Granular/Clastic; Cleavage: None

Formation & geological history

Formed by the accumulation and cementation of mineral particles or rock fragments (clasts) of sand size. The reddish hues indicate the oxidation of iron-bearing minerals during or after deposition.

Uses & applications

Used in construction, as a building stone, in the manufacture of glass, and for landscaping. Common in many geological formations globally.

Geological facts

Sandstone is one of the most common types of sedimentary rock and is often used to map ancient environments, such as deserts or river beds. It can act as a natural aquifer for groundwater.

Field identification & locations

Identify by its gritty texture (feels like sandpaper) and visible sand grains. Found in desert dunes, river deltas, and beaches. Collectors should look for unique layering or fossils within slabs.