sedimentary

Sandstone (Quartzite texture)

Clastic sedimentary rock (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale; Color: Tan, yellow, or buff; Luster: Dull/Earthy; Crystal structure: Granular; Cleavage: None; Specific gravity: 2.3-2.6

Hardness: 6-7 on Mohs scale
Color: Tan, yellow, or buff
Luster: Dull/Earthy

Identified June 14, 2026More sedimentary →

Explore Sandstone (Quartzite texture) 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, yellow, or buff; Luster: Dull/Earthy; Crystal structure: Granular; Cleavage: None; Specific gravity: 2.3-2.6

Formation & geological history

Formed from the accumulation and cementation of sand-sized mineral grains, usually quartz and feldspar, in environments such as deserts, beaches, or riverbeds. Over time, pressure and mineral-rich waters turn loose sand into solid rock.

Uses & applications

Commonly used in construction for paving and building stone. Highly valued by collectors if it contains fossils or unique weathering patterns. Also used in glass manufacturing and as a source for silica.

Geological facts

Sandstone accounts for roughly 20% of all sedimentary rocks on Earth. This specific rounded specimen (a river pebble) shows signs of water-driven erosion, which smoothed its rough edges over long periods of transport.

Field identification & locations

Identify in the field by its sandpaper-like gritty texture. Unlike limestone, it will not fizz when exposed to acid. Found globally in basins and near current or ancient coastlines.