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单词 Orthopyroxenite
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Orthopyroxenite

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Orthopyroxenite

ALH 84001 is an extraterrestrial example of an orthopyroxenite. It is an achondrite meteorite from Mars.
This ternary diagram shows the orthopyroxenites as a function of olivine, clinopyroxene and orthopyroxene abundance.

Orthopyroxenite is an ultramafic and ultrabasic rock that is almost exclusively made from the mineral orthopyroxene, the orthorhombic version of pyroxene and a type of pyroxenite. It can have up to a few percent of olivine and clinopyroxene.

Orthopyroxenites can also occur on other planets. ALH 84001 is a Martian meteorite that can be classified as an orthopyroxenite. It is the only meteorite found with that composition and the only member of the Martian orthopyroxenite group of meteorites.

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更新时间:2025/6/19 21:09:12