Editing Chondrite (section)

=== Enstatite chondrites ===

[[Image:Météorite de Saint Sauveur MHNT2.jpg|thumb|225px|The ''Saint Sauveur'' [[enstatite chondrite]] (EH5)]]

{{main|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 to Earth.<ref name=Norton>Norton, O.R. and Chitwood, L.A. Field Guide to Meteors and Meteorites, Springer-Verlag, London 2008</ref> Only about 200 E-Type chondrites are currently known.<ref name=Norton/> The majority of enstatite chondrites have either been recovered in [[Antarctica]] or have been collected by the American [[National Weather Association]]. They tend to be high in the mineral [[enstatite]] (MgSiO<sub>3</sub>), from which they derive their name.<ref name=Norton/>

E-type chondrites are among the most chemically [[redox|reduced]] rocks known, with most of their iron taking the form of metal or sulfide rather than as an oxide. This suggests that they were formed in an area that lacked [[oxygen]], probably within the [[orbit]] of [[Mercury (planet)|Mercury]].<ref name="new">{{cite web|url = http://www.meteorlab.com/METEORLAB2001dev/Open1.htm|title = Meteorlab|access-date = 22 April 2009|author = New England Meteoritical Services|archive-date = 21 February 2009|archive-url = https://web.archive.org/web/20090221114126/http://meteorlab.com/METEORLAB2001dev/Open1.htm|url-status = dead}}</ref>