sedimentary

Red sandstone

Quartz-rich sandstone, likely iron-oxide-cemented arenite

AI-generated identification · may be incorrect

Fine- to medium-grained, reddish-orange and dull; mainly quartz grains with iron-oxide staining or cement. Quartz hardness is 7 Mohs; sandstone has no consistent crystal structure or cleavage.

Identified October 14, 2026More sedimentary →

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Physical properties

Fine- to medium-grained, reddish-orange and dull; mainly quartz grains with iron-oxide staining or cement. Quartz hardness is 7 Mohs; sandstone has no consistent crystal structure or cleavage.

Formation & geological history

Sand grains were deposited and compacted, then cemented by silica or iron oxides; red coloration commonly develops in oxidizing environments. The specimen’s geological age cannot be determined from the image.

Uses & applications

Used as building and paving stone, landscaping material, and decorative stone; ordinary fragments have little collector value.

Geological facts

Iron oxides, especially hematite, commonly produce sandstone’s red color.

Field identification & locations

Look for visible sand-sized grains and a gritty texture; red sandstone occurs widely in sedimentary basins worldwide. Image detail is insufficient to confirm the identification or assess grain size confidently.