sedimentary

Sandstone

Sedimentary rock composed mainly of quartz sand

Hardness of 6-7 on Mohs scale, typically tan, brown, or gray in color, with a dull or earthy luster and granular texture.

Identified October 29, 2026More sedimentary →

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

Physical properties

Hardness of 6-7 on Mohs scale, typically tan, brown, or gray in color, with a dull or earthy luster and granular texture.

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

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

Sandstone formations often preserve ancient ripple marks and fossilized tracks, providing clues about past environments.

Easily identified by its gritty, sandpaper-like texture and visible mineral grains, frequently 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

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)