sedimentary

Sandstone (Dimension Stone)

Arenite (predominantly SiO2)

Mohs hardness 6-7, tan to grayish-buff color with a gritty granular texture and dull earthy luster.

Identified October 11, 2026More sedimentary →

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Physical properties

Mohs hardness 6-7, tan to grayish-buff color with a gritty granular texture and dull earthy luster.

Formed by the compaction and cementation of mineral particles, predominantly quartz and feldspar, deposited in desert or river environments.

Widely quarried and dressed as dimension stone, flagstone, paving, and decorative architectural mantels or hearths.

Sandstone retains the bedding structures and ripple marks of the ancient water bodies or dunes in which the grains settled.

Identifiable by its gritty sandpaper feel and clastic grain structure; found globally in major sedimentary basin formations.

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)