sedimentary

Sandstone

Sedimentary Clastic Rock

Hardness 6-7 on Mohs scale; colors range from tan, brown, yellow, to red; dull or earthy luster; composed mainly of quartz and feldspar grains.

Identified November 1, 2026More sedimentary →

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

Physical properties

Hardness 6-7 on Mohs scale; colors range from tan, brown, yellow, to red; dull or earthy luster; composed mainly of quartz and feldspar grains.

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

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

Sandstone formations can store vast amounts of groundwater and petroleum, making them crucial reservoirs for hydrogeology.

Identified by its visible sandy texture and gritty feel; commonly found worldwide in sedimentary basins and ancient riverbeds.

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)