sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs); Color: Tan, brownish-grey, or yellowish; Luster: Dull/Earthy; Structure: Granular/Clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8

Hardness: 6-7 (Mohs)
Color: Tan, brownish-grey, or yellowish
Luster: Dull/Earthy

Identified July 18, 2026More sedimentary →

Explore Sandstone (Quartzose) 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, brownish-grey, or yellowish; Luster: Dull/Earthy; Structure: Granular/Clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments. Typically deposited in riverbeds, deserts, or marine environments over millions of years.

Uses & applications

Commonly used as a construction material (building stone), as an abrasive in industry, or as a reservoir rock for groundwater and petroleum.

Geological facts

Sandstone makes up about 20% of all sedimentary rocks on Earth. The famous red rocks of the Grand Canyon are primarily composed of various sandstone layers.

Field identification & locations

Identify by its gritty, sandpaper-like feel and visible grains. It is extremely common worldwide, especially in ancient seabed regions. Collectors look for unique banding or fossil inclusions.