sedimentary

Sandstone (Iron-stained)

Sandstone (rich in Quartz and Hematite/Limonite coatings)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale (due to quartz grains). Color: Reddish-brown, yellow-orange, and tan from iron oxides. Luster: Dull, earthy to vitreous on fresh breaks. Texture: Medium-grained, granular, sandpaper-like surface feel.

Hardness: 6-7 on Mohs scale (due to quartz grains)
Color: Reddish-brown, yellow-orange, and tan from iron oxides
Luster: Dull, earthy to vitreous on fresh breaks

Identified July 23, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed from the deposition and compaction of sand-sized mineral particles or rock fragments in river, beach, or desert environments, followed by cementation with silica, calcite, or iron oxides over millions of years.

Uses & applications

Widely used in construction, landscaping, flagstone paving, building facades, and decorative garden rockeries.

Geological facts

The reddish and orange hue is caused by the weathering and oxidation of iron-bearing minerals, essentially rusting the rock over time to create limonite and hematite coatings.

Field identification & locations

Identified by its gritty sandpaper texture, distinct visible layers, and rust-colored iron oxide staining. Commonly found in sedimentary basins, canyon walls, and river valleys worldwide.