sedimentary

Sandstone

Arenite (SiO2 main component)

Hardness: 6-7 on Mohs scale; Color: Tan, beige, light brown; Luster: Dull, earthy; Grain size: Medium (sand-sized grains of quartz and feldspar); Texture: Rough, abrasive, sandpaper-like feel.

Hardness: 6-7 on Mohs scale
Color: Tan, beige, light brown
Luster: Dull, earthy

Identified July 25, 2026More sedimentary →

Explore Sandstone 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 on Mohs scale; Color: Tan, beige, light brown; Luster: Dull, earthy; Grain size: Medium (sand-sized grains of quartz and feldspar); Texture: Rough, abrasive, sandpaper-like feel.

Formation & geological history

Formed by the compaction and cementation of sand grains, typically composed of quartz and feldspar, deposited in desert, river, beach, or delta environments over millions of years.

Uses & applications

Widely used as a construction material, building facade, flagstone, paving, and crushed stone aggregate. Also serves as a natural reservoir rock for petroleum and groundwater.

Geological facts

Sandstone formations create some of the most dramatic landscapes on Earth, including the Grand Canyon, Zion National Park, and Petra in Jordan.

Field identification & locations

Identify by its distinct gritty, sandpaper-like texture and visible sand grains cemented together. Found abundantly worldwide in sedimentary basins, river valleys, and exposed cliffs.