sedimentary

Sandstone

Clastic Sedimentary Rock

Hardness varies from 6 to 7 depending on cement, color ranges from grey to red, dull luster, granular structure, no cleavage.

Identified November 15, 2026More sedimentary →

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Physical properties

Hardness varies from 6 to 7 depending on cement, color ranges from grey to red, dull luster, granular structure, no cleavage.

Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, typically quartz and feldspar.

Widely used in construction as a building material, paving stones, and for manufacturing glass.

Sandstone formations can act as excellent aquifers for groundwater and often trap natural oil and gas reserves.

Easily identified by its gritty, sandpaper-like texture and visible mineral grains, common globally in riverbeds and deserts.

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