sedimentary

Sandstone

Sedimentary Clastic Rock

Mohs hardness of 6 to 7, typically tan, brown, or reddish, dull luster, and composed mainly of quartz and feldspar grains.

Identified November 13, 2026More sedimentary →

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Physical properties

Mohs hardness of 6 to 7, typically tan, brown, or reddish, dull luster, and composed mainly of quartz and feldspar grains.

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

Commonly used in construction, paving, dimension stone, and for making grindstones.

Sandstone formations can act as excellent aquifers for groundwater storage due to their porous nature.

Identify by its gritty texture resembling sandpaper and visible mineral grains. Found worldwide in sedimentary basins.

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