sedimentary

Pink Sandstone

Quartz arenite / Quartz sandstone (SiO2)

Hardness of 7 on the Mohs scale, pink to reddish color, vitreous to dull luster, and quartz crystal structure with conchoidal fracture.

Identified October 28, 2026More sedimentary →

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Physical properties

Hardness of 7 on the Mohs scale, pink to reddish color, vitreous to dull luster, and quartz crystal structure with conchoidal fracture.

Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, primarily quartz, over millions of years.

Commonly used as a decorative gemstone bead in jewelry, as well as in construction and architectural stone.

Sandstone often preserves ancient ripples and fossilized tracks, providing a detailed record of prehistoric environments.

Identified by visible sand grains and abrasive texture; found worldwide in sedimentary basins and deserts.

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)