sedimentary

Sandstone (likely Quartz Sandstone)

Arenite (composed primarily of SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale), Color: Tan, brown, or buff, Luster: Dull/Earthy, Crystal Structure: Clastic (grainy texture), Cleavage: None (breaks across grains), Specific Gravity: 2.0-2.6

Identified February 12, 2026More sedimentary →

Explore Sandstone (likely Quartz 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 scale), Color: Tan, brown, or buff, Luster: Dull/Earthy, Crystal Structure: Clastic (grainy texture), Cleavage: None (breaks across grains), Specific Gravity: 2.0-2.6

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments (lithification) over millions of years in environments like beaches, deserts, or riverbeds.

Uses & applications

Commonly used in the construction industry as a building material, for paving, and in the manufacturing of glass and grindstones.

Geological facts

Sandstone accounts for approximately 20-25% of all sedimentary rocks on Earth. It is porous and often acts as a significant reservoir for groundwater and petroleum.

Field identification & locations

Identify in the field by its sandpaper-like feel and visible grains. Often displays bedding planes (layers). It is found globally, notably in the Southwestern United States and Northern England.