sedimentary

Likely weathered sandstone

Quartz-rich sandstone; exact identification requires a closer view or tests

AI-generated identification · may be incorrect

Tan to brown, rough and granular, with apparent bedding or weathering grooves. Sandstone is typically mostly quartz (Mohs 7), with variable feldspar and cement; individual grains are not clearly resolved in this image.

Identified October 10, 2026More sedimentary →

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Physical properties

Formation & geological history

Forms when sand is compacted and cemented, commonly in rivers, deserts, beaches, or shallow seas. Its age cannot be determined from the image.

Uses & applications

Sandstone is used as building and paving stone, aggregate, and ornamental stone; this rough specimen has mainly educational or decorative value.

Geological facts

Iron-bearing minerals can impart sandstone’s tan and brown colors, while erosion may accentuate layers and grooves.

Field identification & locations

Look for sand-sized grains and gritty texture; a hand lens can help distinguish sandstone from other weathered rocks. The specimen’s location and a fresh surface would improve identification.