sedimentary

Sandstone

Arenite (SiO2 primarily)

Hardness: 6-7 Mohs; Color: Tan, beige, or yellow; Luster: Dull/Earthy; Texture: Granular like sandpaper; Structure: Clastic; Specific Gravity: 2.2-2.8

Hardness: 6-7 Mohs
Color: Tan, beige, or yellow
Luster: Dull/Earthy

Identified July 7, 2026More sedimentary →

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Physical properties

Hardness: 6-7 Mohs; Color: Tan, beige, or yellow; Luster: Dull/Earthy; Texture: Granular like sandpaper; Structure: Clastic; Specific Gravity: 2.2-2.8

Formation & geological history

Formed from the accumulation and cementation of sand-sized mineral grains or rock fragments, typically through pressure and mineral-rich groundwater over millions of years in deserts, riverbeds, or beaches.

Uses & applications

Extensively used in construction as a building material, for paving, in the manufacturing of glass, and as a decorative stone in landscaping.

Geological facts

Sandstone can preserve ancient environmental records, including ripples from waves that were frozen in time millions of years ago. It is one of the most common types of sedimentary rock on Earth.

Field identification & locations

Identified in the field by its gritty texture (feels like sandpaper) and visible sand grains. Found globally in basins and near continental shelves. Often contains bedding layers.