sedimentary

Iron-stained quartz-rich rock (possibly ironstone or ochre-coated quartz)

Undetermined ferruginous rock; yellow-brown coloration likely from goethite and/or limonite (hydrated iron oxides)

AI-generated identification · may be incorrect

Rough, irregular fragment with a golden ochre surface and dark underside; apparent earthy to slightly granular texture. Hardness and crystal structure cannot be established from the image; no obvious well-formed crystals are visible.

Identified September 28, 2026More sedimentary →

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At a glance

Common name: Iron-stained quartz-rich rock (possibly ironstone or ochre-coated quartz)
Scientific name: Undetermined ferruginous rock; yellow-brown coloration likely from goethite and/or limonite (hydrated iron oxides)
Category: sedimentary
Identified: September 28, 2026
Method: Standard

AI Estimated Value

About $0–$5 for an unverified common fragment; higher value would require a confirmed, distinctive specimen.

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

Iron oxides commonly form as weathering products when iron-bearing minerals oxidize, coating or cementing sediment or rock. A precise rock type or age cannot be determined visually.

Uses & applications

Iron-rich material has historically been used as pigment (ochre); otherwise, this small fragment is mainly of geological or local collecting interest.

Geological facts

Yellow, orange, and brown staining often comes from goethite or mixtures of hydrated iron oxides, rather than from gold. The bright appearance in the photograph may be enhanced by direct lighting.

Field identification & locations

The reported area near Glasgow has varied sedimentary and igneous geology, so location alone does not establish the specimen’s identity. Check whether it leaves a yellow-brown streak and whether the interior is quartz-rich, earthy, or metallic; these tests would help distinguish iron-stained rock from ironstone or ochre.