sedimentary

Weathered reddish-brown rock, possibly sandstone

Likely iron-oxide-stained quartz-rich sandstone; exact identification is uncertain from the photo

AI-generated identification · may be incorrect

Coarse, granular, earthy reddish-brown surface with no obvious crystals or cleavage; sandstone hardness varies with cement, commonly about 6–7 for quartz grains. The image does not show enough detail to determine luster or density reliably.

Identified October 14, 2026More sedimentary →

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At a glance

Common name: Weathered reddish-brown rock, possibly sandstone
Scientific name: Likely iron-oxide-stained quartz-rich sandstone; exact identification is uncertain from the photo
Category: sedimentary
Identified: October 14, 2026
Method: Standard

AI Estimated Value

Approximately $0–$20 for an ordinary loose landscaping or collecting specimen; more if its locality or provenance is notable.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

If sandstone, it formed as sand grains were buried and cemented, with iron oxides producing the reddish color. Its age and specific formation environment cannot be determined from the photograph.

Uses & applications

Sandstone is used as building and paving stone, aggregate, and landscaping material; this specimen appears mainly decorative or suitable for collecting.

Geological facts

Iron staining commonly colors quartz-rich rocks red or brown, but similar colors and textures can occur in other rocks.

Field identification & locations

Look for visible sand-sized grains and a gritty texture; a close-up and fresh broken surface would help confirm sandstone and distinguish it from an igneous or metamorphic rock. Sandstones occur worldwide.