sedimentary

Reddish sandstone (probable)

Quartz-rich sandstone; exact composition cannot be confirmed from the image

AI-generated identification · may be incorrect

Pinkish-brown, dull and granular, with no obvious crystals or cleavage; likely dominated by quartz (Mohs hardness 7) and cementing minerals. Rock hardness and density depend on cementation.

Identified October 12, 2026More sedimentary →

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Physical properties

Pinkish-brown, dull and granular, with no obvious crystals or cleavage; likely dominated by quartz (Mohs hardness 7) and cementing minerals. Rock hardness and density depend on cementation.

Formation & geological history

Sandstone forms when sand is buried, compacted, and cemented, often in river, shoreline, or desert settings; its age cannot be determined visually.

Uses & applications

Commonly used as building and paving stone, landscaping material, and decorative stone; this small piece is mainly suitable for collecting.

Geological facts

The reddish color commonly results from iron-oxide coatings or cement around sand grains.

Field identification & locations

A granular texture and visible sand-sized grains distinguish sandstone from many fine-grained rocks; inspect a fresh surface for grains. Similar sandstone occurs worldwide.