sedimentary

Sandstone

Clastic Sedimentary Rock

Hardness of 6-7 on Mohs scale, typically tan, brown, or reddish color, dull luster, and granular texture composed mostly of quartz grains.

Identified November 15, 2026More sedimentary →

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Physical properties

Hardness of 6-7 on Mohs scale, typically tan, brown, or reddish color, dull luster, and granular texture composed mostly of quartz grains.

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

Widely used in construction as a building material, dimension stone, and for paving or landscaping.

Sandstone formations often preserve ancient ripple marks and fossilized tracks, providing a detailed record of prehistoric environments.

Easily identified by its gritty, sandpaper-like texture and visible mineral grains, commonly 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