sedimentary

Weathered sandstone fragment

Quartz-rich sandstone, likely feldspathic or lithic sandstone

AI-generated identification · may be incorrect

Usually Mohs 5–7, but this friable specimen may crumble; pale pink-beige, dull to slightly gritty, with visible sand-sized grains and no obvious cleavage. Composition is mainly quartz with variable feldspar, rock fragments, and iron-oxide staining.

Identified August 15, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed when sand accumulated, compacted, and cemented in a river, dune, beach, or desert environment; its exact geologic age cannot be determined from the image. Surface weathering has softened and disaggregated the fragment.

Uses & applications

Common sandstone is used as building stone, paving, aggregate, and decorative material; this small weathered piece has mainly educational or collector interest.

Geological facts

Sandstone is identified by its distinctly granular texture, unlike a crystalline igneous rock or glassy material. Pink coloration commonly reflects feldspar or iron oxides.

Field identification & locations

Look for sand grains, rough texture, layered bedding, and variable cement; a hand lens and dilute acid test help distinguish carbonate cement. Common worldwide, especially in sedimentary basins and deserts.