sedimentary

Sandstone (Lithic Arenite)

Clastic Sedimentary Rock (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs); Color: Greyish-brown with gritty texture; Luster: Dull/Earthy; Structure: Clastic; Composition: Quartz, feldspar, and rock fragments (lithics) cemented by silica or calcite.

Hardness: 6-7 (Mohs)
Color: Greyish-brown with gritty texture
Luster: Dull/Earthy

Identified July 8, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs); Color: Greyish-brown with gritty texture; Luster: Dull/Earthy; Structure: Clastic; Composition: Quartz, feldspar, and rock fragments (lithics) cemented by silica or calcite.

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments over millions of years in environments like riverbeds, deserts, or marine basins.

Uses & applications

Commonly used as a building material, road base, or crushed stone. Can be an important reservoir rock for groundwater and petroleum.

Geological facts

Sandstone makes up about 20-25% of all sedimentary rocks on Earth. The grains inside often retain clues about the environment they traveled through before settling.

Field identification & locations

Identify in the field by its gritty, sand-paper feel. It will often leave a grainy residue when rubbed. Found globally in canyon walls and exposed sedimentary bedding.