sedimentary

Sandstone (Weathered)

Arenite (typically SiO2 as quartz grains)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale (for grains); Color: Tan, beige, or light brown; Luster: Dull or earthy; Crystal structure: Clastic (granular); Cleavage: None; Specific gravity: 2.2-2.8

Hardness: 6-7 on Mohs scale (for grains)
Color: Tan, beige, or light brown
Luster: Dull or earthy

Identified July 9, 2026More sedimentary →

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Physical properties

Hardness: 6-7 on Mohs scale (for grains); Color: Tan, beige, or light brown; Luster: Dull or earthy; Crystal structure: Clastic (granular); Cleavage: None; Specific gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation, compaction, and cementation of sand-sized mineral grains or rock fragments, usually in deserts, riverbeds, or beaches. Geological age can range from Precambrian to Holocene.

Uses & applications

Commonly used as a construction material, for sharpening tools, in glass manufacturing (if high silica), and as decorative landscaping stone.

Geological facts

Sandstone acts as a natural aquifer, holding large amounts of water or petroleum in the spaces between grains. Famous examples include the red cliffs of the Grand Canyon and the Petra archaeological site.

Field identification & locations

Identify by its gritty, sandpaper-like texture and visible grains. It is extremely common worldwide, particularly in arid regions or along current and ancient coastlines.