Rock Identifier
Nickel–iron meteorite (likely weathered iron meteorite) (Fe–Ni alloy, chiefly kamacite and taenite) — meteorite
meteorite

Nickel–iron meteorite (likely weathered iron meteorite)

Fe–Ni alloy, chiefly kamacite and taenite

AI-generated identification · may be incorrect

Dark brown-black, strongly metallic luster with abundant pitting and oxidation; Mohs hardness about 4–5, very high density (~7–8 g/cm³), opaque, and typically magnetic. The irregular, melted-looking exterior may represent a weathered fusion crust or an iron-rich terrestrial specimen.

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Physical properties

Dark brown-black, strongly metallic luster with abundant pitting and oxidation; Mohs hardness about 4–5, very high density (~7–8 g/cm³), opaque, and typically magnetic. The irregular, melted-looking exterior may represent a weathered fusion crust or an iron-rich terrestrial specimen.

Formation & geological history

Iron meteorites crystallized from molten metal cores of differentiated asteroids roughly 4.5 billion years ago, then reached Earth as meteorites. The identification is uncertain from the image alone because terrestrial slag or limonite-rich ironstone can look similar.

Uses & applications

Primarily collected and studied; polished slices may display Widmanstätten patterns and are used in jewelry and display pieces. Not generally used industrially because specimens are scarce.

Geological facts

A cut-and-etched surface showing interlocking Widmanstätten bands would strongly support meteorite identification. Strong attraction to a magnet, unusual heft, and absence of vesicle walls or glassy slag are useful clues.

Field identification & locations

Possible indicators include a fusion crust, regmaglypts, magnetic response, and high density; confirm with nickel testing and professional elemental analysis. Common finds occur in deserts, Antarctica, and other arid regions.