Rock Identifier
Metallic iron meteorite fragment (probable) (Iron meteorite, mainly kamacite (α-Fe–Ni), possibly with taenite) — meteorite
meteorite

Metallic iron meteorite fragment (probable)

Iron meteorite, mainly kamacite (α-Fe–Ni), possibly with taenite

AI-generated identification · may be incorrect

Rounded, thumb-sized gray-metallic fragment with a dull metallic luster, pits, and an irregular broken surface; likely hardness about 4–5.5 Mohs and high specific gravity (~7–8), though its appearance could also match industrial metal slag.

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Physical properties

Rounded, thumb-sized gray-metallic fragment with a dull metallic luster, pits, and an irregular broken surface; likely hardness about 4–5.5 Mohs and high specific gravity (~7–8), though its appearance could also match industrial metal slag.

Formation & geological history

If genuine, it formed in the metallic core of a differentiated asteroid and crystallized over immense cooling intervals, commonly billions of years ago. Its smooth exterior may reflect atmospheric ablation and regmaglypt formation during entry.

Uses & applications

Meteorites are primarily collected and studied; scientifically authenticated pieces can be valuable. Iron meteorites are also used for display, teaching, and occasionally jewelry.

Geological facts

A magnet should attract it strongly, but magnetism alone is not diagnostic because iron slag and terrestrial metal can behave similarly. A cut and etched surface may reveal a Widmanstätten pattern of interlocking kamacite and taenite.

Field identification & locations

Common sources include deserts, Antarctica, and metal-rich impact sites; visually, this specimen is only a tentative identification. Test density, nickel content, and seek professional meteoritical authentication—avoid destructive tests.