Rock Identifier
Likely iron meteorite fragment (Unclassified Fe–Ni meteorite; possible stony-iron fragment) — meteorite
meteorite

Likely iron meteorite fragment

Unclassified Fe–Ni meteorite; possible stony-iron fragment

AI-generated identification · may be incorrect

Dark gray-brown, metallic to dull luster, irregular heavily weathered surface; likely Mohs ~4–5 and unusually dense. The image is insufficient to confirm metal content, Widmanstätten structure, or mineral composition.

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Physical properties

Dark gray-brown, metallic to dull luster, irregular heavily weathered surface; likely Mohs ~4–5 and unusually dense. The image is insufficient to confirm metal content, Widmanstätten structure, or mineral composition.

Formation & geological history

Potentially extraterrestrial material formed in a differentiated asteroid’s metallic core, then melted from its parent body and later weathered on Earth; terrestrial age is unknown. A slag or iron-rich terrestrial rock remains possible without testing.

Uses & applications

Primarily a collector specimen; authenticated meteorites may have scientific and educational value, while iron meteorites are sometimes cut, etched, and displayed. No practical construction use at this size.

Geological facts

A magnet test, streak test, density measurement, and laboratory nickel analysis are useful; genuine iron meteorites commonly contain kamacite and taenite and show a Widmanstätten pattern when etched.

Field identification & locations

Test gently with a strong magnet and inspect for a thin fusion crust, regmaglypts, and metal filings; avoid destructive acid testing. Confirmation requires petrographic examination or elemental analysis, especially because industrial slag can look similar.