sedimentary

Sandstone

Arenite (SiO2 based)

AI-generated identification · may be incorrect

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

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

Identified July 1, 2026More sedimentary →

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Physical properties

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

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains (usually quartz or feldspar) over millions of years in deserts, river beds, or ocean floors.

Uses & applications

Primarily used as a construction material (dimension stone), in glass manufacturing, and as a reservoir rock for oil and natural gas.

Geological facts

Sandstone represents about 20% of all sedimentary rocks on Earth. The famous red rock formations in Sedona, Arizona and the Grand Canyon are primarily composed of vibrant sandstone layers.

Field identification & locations

Identify by its characteristic 'sandpaper' feel when rubbed. It is commonly found in sedimentary basins and outcrops worldwide. Use a magnifying glass to see the individual cemented grains.