meteorite
Iron meteorite (likely weathered octahedrite)
Fe–Ni kamacite–taenite alloy, possibly a Canyon Diablo-type specimen
AI-generated identification · may be incorrectDark brown-black, metallic to dull luster, very high density, Mohs hardness about 4–5.5, malleable rather than brittle; iron meteorites commonly show Widmanstätten figures after polishing and etching. The cavities and rounded form may reflect atmospheric ablation or terrestrial corrosion.
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Physical properties
Dark brown-black, metallic to dull luster, very high density, Mohs hardness about 4–5.5, malleable rather than brittle; iron meteorites commonly show Widmanstätten figures after polishing and etching. The cavities and rounded form may reflect atmospheric ablation or terrestrial corrosion.
Formation & geological history
Formed in the metallic core of a differentiated asteroid over 4.5 billion years ago, then ejected by impacts and delivered to Earth. Its strongly weathered surface suggests prolonged terrestrial exposure, but an exact meteorite classification requires chemical and structural testing.
Uses & applications
Collected as a meteorite; cut and etched pieces are used for educational displays and jewelry. It is not suitable as ordinary construction stone.
Geological facts
Iron meteorites are mainly nickel-iron and are much denser than terrestrial rocks; many contain kamacite, taenite, and schreibersite. The appearance is also compatible with industrial iron or slag, so visual identification alone is insufficient.
Field identification & locations
Commonly found in deserts and Antarctica; use a magnet, measure density, and inspect a polished/etched face for Widmanstätten patterns. A nickel test and laboratory analysis are essential to distinguish it from slag or cast iron.