sedimentary

Sandstone Pebble

Quartz Arenite

Hardness 7 on the Mohs scale, tan to brown color, dull luster, clastic texture with rounded quartz grains.

Identified November 15, 2026More sedimentary →

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Physical properties

Hardness 7 on the Mohs scale, tan to brown color, dull luster, clastic texture with rounded quartz grains.

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

Used in construction, landscaping, and as a decorative stone.

Sandstone often preserves ancient ripple marks and fossil tracks from prehistoric environments.

Easily identified by its gritty texture and visible sand grains; commonly found in riverbeds and coastal areas.

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

Sandstone or Siltstone

Arenite (if sandstone)

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Shale

Fissile Sedimentary Rock

Sandstone

Arenite

Shale

Clastic sedimentary rock