sedimentary

Sandstone

Arenite (primarily Quartz-based Sandstone)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale) if quartz-rich; Color: Tan, brown, reddish-orange; Luster: Dull/Earthy; Texture: Granular, sandpaper-like feel; Cleavage: None (fractures across grains).

Hardness: 6-7 (Mohs scale) if quartz-rich
Color: Tan, brown, reddish-orange
Luster: Dull/Earthy

Identified July 5, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale) if quartz-rich; Color: Tan, brown, reddish-orange; Luster: Dull/Earthy; Texture: Granular, sandpaper-like feel; Cleavage: None (fractures across grains).

Formation & geological history

Formed from the accumulation and cementation of sand-sized mineral grains or rock fragments (0.0625 to 2 mm). Typically deposited in deserts, riverbeds, or beaches over millions of years.

Uses & applications

Widely used as a construction material for building facades, paving stones, and grindstones. In the petroleum industry, it serves as a common reservoir rock for oil and gas.

Geological facts

Sandstone makes up about 20% of all sedimentary rocks on Earth. Famous landmarks like the Grand Canyon and the treasury at Petra are primarily composed of various sandstone layers.

Field identification & locations

Identify in the field by its gritty texture (feels like sandpaper) and visible bedding planes. Look for it in arid regions or exposed cliff sides. It is ubiquitous globally.