sedimentary

Sandstone

Clastic sedimentary rock composed mainly of quartz and feldspar

Hardness of 6-7 on the Mohs scale, colors range from tan, brown, yellow to red, dull luster, granular texture with visible sand grains.

Identified October 28, 2026More sedimentary →

Get a report just like this from any photo, free.

Physical properties

Hardness of 6-7 on the Mohs scale, colors range from tan, brown, yellow to red, dull luster, granular texture with visible sand grains.

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

Widely used in construction as a building material, paving stone, and in the manufacture of glass.

Sandstone can absorb water like a sponge and acts as a natural aquifer for groundwater storage.

Easily identified by its gritty, sandpaper-like texture and visible quartz grains; found 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

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Sandstone or Siltstone

Arenite (if sandstone)

Sandstone

Arenite

Shale

Shale (clastic sedimentary rock)

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)