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- Iron meteorite
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Hoba meteorite
The Hoba meteorite, lying where it was discovered in 1920 near Grootfontein, Namibia. The largest meteorite on Earth and an iron meteorite by classification, it consists of a nickel-iron alloy and is estimated to weigh about 60 tons.
Ataxite
meteorite
Ataxite, any iron meteorite containing more than 16 percent nickel. Ataxites, containing taenite as their main mineral, do not show the Widmanstätten pattern. The taenite in ataxites is mixed with some kamacite to form an intergrowth called plessite. Ataxites are a rare class; of the 49 iron meteorites whose falls have been observed, none is an ataxite. However, the 60-ton Hoba meteorite, the largest on Earth and found buried on a farm in Namibia in 1920, is an ataxite.
This article was most recently revised and updated by Erik Gregersen.
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