Rock Identifier
Iron meteorite (probable) (Fe–Ni metallic meteorite, possibly an iron meteorite such as a coarse octahedrite) — meteorite
meteorite

Iron meteorite (probable)

Fe–Ni metallic meteorite, possibly an iron meteorite such as a coarse octahedrite

AI-generated identification · may be incorrect

Dark brown to black, metallic-to-submetallic luster, rounded fusion-crust-like surface, and possible regmaglypts (thumbprint depressions). Typical iron meteorites have Mohs hardness about 4–5, specific gravity 7–8, and an iron-nickel alloy crystal structure.

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Physical properties

Dark brown to black, metallic-to-submetallic luster, rounded fusion-crust-like surface, and possible regmaglypts (thumbprint depressions). Typical iron meteorites have Mohs hardness about 4–5, specific gravity 7–8, and an iron-nickel alloy crystal structure.

Formation & geological history

Formed in the metallic core of a differentiated asteroid, then melted from its parent body and cooled slowly before reaching Earth; commonly billions of years old. The exterior may acquire a dark fusion crust during atmospheric entry and rust after terrestrial exposure.

Uses & applications

Primarily valued for scientific study, collecting, display, and jewelry; iron meteorites are not generally used industrially or structurally.

Geological facts

Appearance alone cannot confirm a meteorite: dense weight, strong magnetism, and a nickel-positive test are important. A cut and etched face may reveal Widmanstätten figures, though some iron meteorites lack visible patterns.

Field identification & locations

Common candidates include Campo del Cielo and Canyon Diablo, but terrestrial iron slag, hematite, and magnetite can look similar. Test magnetism and density; avoid damaging it until examined by a meteorite specialist.