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How do mesosiderite meteorites form?
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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.
Mesosiderites are a type of stony iron meteorite characterized as impact breccias. They are believed to be related to the achondrite group of meteorites, specifically the HED class (howardites, eucrites, and diogenites), as they contain fragments similar to these materials.21
Unlike pallasites, which formed at the interface between a molten metal core and a silicate mantle, the formation of mesosiderites involves a collision event. They contain an unusually large quantity of interspersed nickel-iron metal. While the exact origin of this metal remains uncertain, it is hypothesized that it may have originated from the core of a separate body that collided with and brecciated the mesosiderite parent body.21