sedimentary

Sandstone

Arenite (SiO2 based)

AI-generated identification · may be incorrect

Hardness: 6-7 Mohs; Color: Tan, buff, or cream; Luster: Dull/Earthy; Crystal structure: Granular/Clastic; Cleavage: None; Specific gravity: 2.2-2.8

Hardness: 6-7 Mohs
Color: Tan, buff, or cream
Luster: Dull/Earthy

Identified May 14, 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 Mohs; Color: Tan, buff, or cream; Luster: Dull/Earthy; Crystal structure: Granular/Clastic; Cleavage: None; Specific gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of sand-sized minerals (mostly quartz) or rock grains. These deposits often occur in deserts, river beds, or beaches. Geological age can range from Precambrian to Holocene.

Uses & applications

Widely used as a construction material (dimension stone), in the manufacture of glass, as an abrasive agent, and for artistic sculptures.

Geological facts

Sandstone is one of the most common types of sedimentary rock and is often a major reservoir for water (aquifers) and oil/gas due to its porosity.

Field identification & locations

Identify in the field by its 'sandpaper' texture and visible grains. Often found in outcropping cliffs or canyon walls. Collectors look for unique banding or fossil inclusions.