mineral

Iron-rich rock fragment, possibly hematite-rich ironstone

Likely hematite (α-Fe₂O₃) or iron-oxide-cemented rock; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Angular, rough fragment with rusty red-brown surfaces and darker, weathered edges. Hematite has Mohs hardness 5–6.5, metallic to earthy luster, and no true cleavage; the specimen’s crystal structure and density cannot be determined visually.

Identified October 15, 2026More mineral →

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At a glance

Common name: Iron-rich rock fragment, possibly hematite-rich ironstone
Scientific name: Likely hematite (α-Fe₂O₃) or iron-oxide-cemented rock; exact identification is uncertain from the image
Category: mineral
Identified: October 15, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a small, common rough fragment; higher-quality collectible specimens may cost more.

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 form through oxidation and weathering of iron-bearing minerals, or accumulate in sedimentary ironstone deposits. The specimen’s age and formation setting cannot be established from the photo.

Uses & applications

Iron ores are used to produce steel; attractive hematite pieces may be collected or polished for ornaments and jewelry.

Geological facts

Hematite commonly leaves a reddish-brown streak, a useful test that can distinguish it from many other dark metallic minerals.

Field identification & locations

The rusty coloration and earthy appearance suggest iron oxides, but confirm with a streak test on unglazed porcelain and assess whether it is magnetic. Iron-rich rocks occur worldwide, especially in sedimentary iron formations and weathered deposits.