sedimentary

Sandstone

Arenite

AI-generated identification · may be incorrect

Hardness: 6-7 Mohs; Color: Tan, beige, brown; Luster: Dull/Earthy; Crystal structure: Granular clastic; Cleavage: None/Irregular; Specific gravity: 2.2-2.8

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

Identified May 15, 2026More sedimentary →

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Physical properties

Hardness: 6-7 Mohs; Color: Tan, beige, brown; Luster: Dull/Earthy; Crystal structure: Granular clastic; Cleavage: None/Irregular; Specific gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and lithification of sand-sized mineral particles or rock fragments, typically deposited in river beds, beaches, or deserts over millions of years.

Uses & applications

Widely used in construction for building stone, paving, and as an aggregate. In industry, it is a source of silica and act as a reservoir for oil and groundwater.

Geological facts

Sandstone makes up about 10-25% of the sedimentary rock on Earth. It is the material used to build the famous city of Petra in Jordan and many iconic American landmarks like the 'Red Rocks' of Colorado.

Field identification & locations

Identify by its gritty, sandpaper-to-the-touch texture. It is commonly found in sedimentary basins and road cuts. Look for visible layering or bedding planes.