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A meteorite mineral is a mineral found chiefly or exclusively within meteorites or meteorite-derived material. [citation needed] This is a list of those minerals, excluding minerals also commonly found in terrestrial rocks. As of 1997 there were approximately 295 mineral species which have been identified in meteorites. [1]
Fall – a meteorite that was seen while it fell to Earth and found. Find – a meteorite that was found without seeing it fall. Fossil meteorite – a meteorite that was buried under layers of sediment before the start of the Quaternary period. Some or all of the original cosmic material has been replaced by diagenetic minerals.
Hexahedrites are a structural class of iron meteorite. They are composed almost exclusively of the nickel – iron alloy kamacite and are lower in nickel content than the octahedrites . [ 1 ] The nickel concentration in hexahedrites is always below 5.8% and only rarely below 5.3%.
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The most carbon-rich meteorites, with abundances up to 0.7% by mass, are ureilites. [6]: 241 These have no known parent body and their origin is controversial. [7] Diamonds are common in highly shocked ureilites, and most are thought to have been formed by the shock of the impact with either Earth or other bodies in space.
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Ataxites are the most nickel-rich meteorites known; they usually contain over 18% nickel. [1] The high nickel content is the reason that they do not develop a Widmanstätten structure, because in this case kamacite can be exsolved from taenite only at such a low temperature (below about 600°C) where diffusion is already too slow. [2]