sedimentary

Sandstone

Sedimentary Rock (Quartz arenite/Arkose)

Hardness: 6 to 7 on the Mohs scale (depending on cementation). Color: Varies widely including tan, brown, yellow, red, grey, and pink. Luster: Dull to earthy. Crystal structure: Clastic texture composed of sand-sized mineral particles or rock fragments, primarily quartz and feldspar.…

Hardness: 6 to 7 on the Mohs scale (depending on cementation)
Luster: Dull to earthy

Identified August 3, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, mostly quartz and feldspar, usually in environments such as deserts, beaches, rivers, and shallow marine environments. Can range in geological age from recent to Precambrian.

Uses & applications

Commonly used in construction as a building material, dimension stone, paving stone, and for making glass and abrasive products.

Geological facts

Sandstone formations often create striking geological landmarks such as arches, cliffs, and mesas due to differential weathering. Famous monuments like Petra in Jordan are carved directly into sandstone cliffs.

Field identification & locations

Can be identified in the field by its distinct grainy, sandpaper-like texture and visible sand grains. Found worldwide in sedimentary basins and desert regions.

Other sedimentary specimens

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Sandstone or Siltstone

Arenite (if sandstone)

Sedimentary

Quartz pebble

Silicon dioxide (SiO2)

sedimentary

Fossiliferous Concretion

Septarian Concretion containing Brachiopods/Crinoids

fossil

Generic Pebble / Rock Fragment

Lithic fragment / Weathered rock

sedimentary

Sedimentary Sandstone

Arenite (Sedimentary Rock)

sedimentary

Banded Siltstone / Mudstone Pebble

Siltstone / Argillite

sedimentary