Achondrite is a type of stony meteorite that is differentiated, meaning it has undergone melting and differentiation processes. Unlike chondrites, which are the most primitive meteorites and have not undergone much melting or differentiation, achondrites are believed to have formed from the crust or mantle of differentiated parent bodies, such as asteroids or planets. Achondrites are typically composed of silicate minerals such as pyroxene, plagioclase feldspar, and olivine, and may also contain metallic minerals such as iron and nickel. They are classified based on their mineralogical and chemical compositions, and there are several subtypes of achondrites including eucrites, howardites, and diogenites. Studying achondrites can provide insights into the formation and differentiation processes of planetary bodies, as well as the conditions and processes that occur during the early stages of the solar system.
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