sedimentary

Sandstone

Sedimentary rock composed mainly of quartz sand

Hardness of 6 to 7 on the Mohs scale, typically brown, tan, or reddish color, dull luster, and a granular texture.

Identified November 13, 2026More sedimentary →

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Physical properties

Hardness of 6 to 7 on the Mohs scale, typically brown, tan, or reddish color, dull luster, and a granular texture.

Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, often in desert, river, or marine environments.

Commonly used in construction as building stone, paving material, and for making glass.

Sandstone formations can store vast amounts of groundwater and petroleum, making them crucial reservoirs for natural resources.

Identified by its gritty feel and visible sand grains; widely distributed in sedimentary basins worldwide.

Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion

Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image

Sandstone or Siltstone

Arenite (if sandstone)

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Shale

Fissile Sedimentary Rock

Sandstone

Arenite

Shale

Clastic sedimentary rock