sedimentary

Likely weathered sandstone fragment

Sandstone, chiefly quartz (SiO₂) grains cemented by silica, calcite, or iron oxides

AI-generated identification · may be incorrect

Gray-brown, dull and fine-grained with an irregular fracture; sandstone is typically Mohs 6–7 for its quartz grains, though cement strength varies. The image does not show enough detail to confirm grain size or cement.

Identified September 23, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed when sand was deposited, compacted, and cemented; its age and depositional environment cannot be determined from the image alone.

Uses & applications

Sandstone is used as building and paving stone, aggregate, and decorative material; this small fragment has little practical value.

Geological facts

Sandstone properties vary widely with grain size and cement, so visual identification from a photograph is uncertain.

Field identification & locations

Look for visible sand grains and a gritty texture; a fresh broken surface can help distinguish it from fine-grained rocks. Sandstone occurs worldwide in sedimentary basins.