sedimentary

Sandstone

Clastic Sedimentary Rock

Hardness of 6-7 on Mohs scale, typically tan, brown, or reddish color with a grainy luster and quartz mineral composition.

Identified November 14, 2026More sedimentary →

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Physical properties

Hardness of 6-7 on Mohs scale, typically tan, brown, or reddish color with a grainy luster and quartz mineral composition.

Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, over millions of years.

Widely used in construction, as building material, and for decorative paving stones.

Sandstone formations often preserve ancient desert or beach environments and display distinct layered bedding planes.

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