Rock Identifier
Iron meteorite (probable) (Fe–Ni alloy, mainly kamacite and taenite) — meteorite
meteorite

Iron meteorite (probable)

Fe–Ni alloy, mainly kamacite and taenite

AI-generated identification · may be incorrect

Dark brown-to-black, weathered metallic surface with rounded shape and possible regmaglypts; typically dense, magnetic, and metallic-lustered. Mohs hardness is about 4–5, with no cleavage; specific gravity commonly 7.3–7.8.

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Physical properties

Dark brown-to-black, weathered metallic surface with rounded shape and possible regmaglypts; typically dense, magnetic, and metallic-lustered. Mohs hardness is about 4–5, with no cleavage; specific gravity commonly 7.3–7.8.

Formation & geological history

Formed in the metallic core of a differentiated asteroid and crystallized billions of years ago, then landed on Earth. The rusty exterior likely represents terrestrial weathering of iron-nickel metal.

Uses & applications

Primarily a collectible and scientific specimen; cut and etched examples may display Widmanstätten patterns. Not generally used industrially because specimens are rare.

Geological facts

Iron meteorites commonly contain 5–20% nickel and may produce a strong magnet response. A true identification requires testing for nickel and laboratory confirmation; terrestrial iron slag can look similar.

Field identification & locations

Check for strong magnetism, unusually high density, a thin fusion crust, regmaglypts, and absence of vesicles; a polished acid-etched face should show Widmanstätten figures. Common finds occur in dry deserts and Antarctica.

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