sedimentary

Sandstone

Clastic sedimentary rock

Hardness of 6-7, typically tan, brown, or reddish, dull luster, composed of quartz and feldspar grains cemented together.

Identified October 21, 2026More sedimentary →

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

Physical properties

Hardness of 6-7, typically tan, brown, or reddish, dull luster, composed of quartz and feldspar grains cemented together.

Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, often in desert or beach environments.

Commonly used in construction as building stone, dimension stone, and for paving or landscaping.

Sandstone can store large amounts of groundwater and petroleum, making it a crucial reservoir rock for aquifers and oil fields.

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

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)