sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 Mohs; Color: Tan, yellowish-brown, or buff; Luster: Dull to earthy; Texture: Granular/gritty like sandpaper; Structure: Clastic

Hardness: 6-7 Mohs
Color: Tan, yellowish-brown, or buff
Luster: Dull to earthy

Identified July 14, 2026More sedimentary →

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Physical properties

Hardness: 6-7 Mohs; Color: Tan, yellowish-brown, or buff; Luster: Dull to earthy; Texture: Granular/gritty like sandpaper; Structure: Clastic

Formation & geological history

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

Uses & applications

Commonly used as a building material, in paving, for making grindstones, and as a source of silica for glass manufacturing.

Geological facts

Sandstone accounts for approximately 20 to 25 percent of all sedimentary rocks on Earth. The color is often determined by the presence of iron oxides like goethite or limonite.

Field identification & locations

Identify by its gritty texture (feels like sandpaper) and visible grains. It is extremely common worldwide in outcrop formations and as river pebbles.