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

Metallic iron-nickel meteorite fragment (probable)

Iron meteorite, mainly kamacite (α-Fe-Ni) with possible taenite (γ-Fe-Ni)

AI-generated identification · may be incorrect

Small irregular gray-silver fragment with metallic luster and granular/flow-like surface; likely Mohs hardness ~4–5 and high density (about 7–8 g/cm³). Exact composition, magnetic response, and Widmanstätten structure require testing; a silvery industrial metal fragment is also possible.

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Physical properties

Small irregular gray-silver fragment with metallic luster and granular/flow-like surface; likely Mohs hardness ~4–5 and high density (about 7–8 g/cm³). Exact composition, magnetic response, and Widmanstätten structure require testing; a silvery industrial metal fragment is also possible.

Formation & geological history

If meteoritic, it formed in a differentiated asteroid’s metallic core over 4.5 billion years ago and reached Earth as impact debris. Iron meteorites commonly contain kamacite–taenite intergrowths.

Uses & applications

Meteorites are valued chiefly by collectors and for scientific study; iron meteorite slices are used decoratively. No ordinary construction use is practical for a specimen this small.

Geological facts

A polished and acid-etched surface may reveal Widmanstätten patterns, diagnostic of slow cooling in an asteroid core. The photograph alone cannot confirm extraterrestrial origin.

Field identification & locations

Test with a strong magnet, measure unusually high density, and inspect for fusion crust or regmaglypts; definitive identification requires nickel analysis and petrographic examination. Common finds occur in deserts and Antarctica.

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