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Enstatite chondrite : ウィキペディア英語版
Enstatite chondrite

Enstatite chondrites (also known as E-type chondrites) are a rare form of meteorite thought to comprise only about 2% of the chondrites that fall on Earth.〔Norton, O.R. and Chitwood, L.A. Field Guide to Meteors and Meteorites, Springer-Verlag, London 2008〕 Only about 200 E-Type chondrites are currently known.〔
==Origin==
E-type chondrites are among the most chemically reduced rocks known, with most of their iron taking the form of metal or sulfide rather than an oxide. They tend to be high in the mineral enstatite (MgSiO3), from which they derive their name.〔 Based on spectral analysis, it has been suggested that the asteroid 16 Psyche may be the common parent for this type of meteorite. Some examples may have originated from the planet Mercury.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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