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mesosiderite

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Mesosiderites are a class of stony–iron meteorites consisting of about equal parts of metallic nickel-iron and silicate. They are breccias with an irregular texture; silicates and metal occur often in lumps or pebbles as well as in fine-grained intergrowths. The silicate part contains olivine, pyroxenes, and Ca-rich feldspar and is similar in composition to eucrites and diogenites.

Key facts

Meteorite subdivision.Subdivision
Class
Meteorite subdivision.Name
Mesosiderite
Meteorite subdivision.Image
Vaca muerta mesosiderite.jpg
Meteorite subdivision.Image_caption
Vaca muerta mesosiderite.
Meteorite subdivision.Type
Stony-iron
Meteorite subdivision.Composition
Meteoric iron (kamacite, taenite & tetrataenite); silicates (mostly pyroxene & Ca-rich plagioclase); sulphides (troilite)
Meteorite subdivision.Number_of_specimens
208
Meteorite subdivision.Image2
Chinguetti meteorite.jpg
Meteorite subdivision.Image2_caption
Chinguetti mesosiderite

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Wikidata facts

Image
Miney, Missouri, meteorite - Meteorites in the Arppeanum - DSC05482.JPG
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Commons category
Mesosiderites
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Mesosiderites are a class of stony–iron meteorites consisting of about equal parts of metallic nickel-iron and silicate. They are breccias with an irregular texture; silicates and metal occur often in lumps or pebbles as well as in fine-grained intergrowths. The silicate part contains olivine, pyroxenes, and Ca-rich feldspar and is similar in composition to eucrites and diogenites.

They are a rare type of meteorite; as of November 2014 only 208 are known (of which 56 come from Antarctica) and only 7 of these are observed falls. On the other hand, some mesosiderites are among the largest meteorites known.

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