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Enstatite
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==In space== Enstatite is one of the few silicate minerals that have been observed in crystalline form outside the [[Solar System]], particularly around evolved stars and [[planetary nebulae]] such as [[NGC 6302]]. Enstatite is thought to be one of the early stages for the formation of crystalline silicates in space. Many correlations have been noted between the occurrence of the mineral and the structure of the object around which it has been observed.{{citation needed|date=September 2008}} Enstatite is thought to be a main component of the [[E-type asteroid]]s.<ref name=keller>[http://www.sciencemag.org/cgi/content/abstract/327/5962/190 H. U. Keller, et al. - '''E-Type Asteroid (2867) Steins as Imaged by OSIRIS on Board Rosetta''' - Science 8 January 2010: Vol. 327. no. 5962, pp. 190 - 193 ] {{doi|10.1126/science.1179559}}</ref> The [[Hungaria asteroid]]s are the main examples in the Solar System. A layer of [[quartz]] and enstatite clouds above an [[iron]] cloud deck are thought to exist in the atmosphere of the young [[brown dwarf]] [[2M2224-0158]].<ref>{{Cite journal |last1=Burningham |first1=Ben |last2=Faherty |first2=Jacqueline K. |last3=Gonzales |first3=Eileen C. |last4=Marley |first4=Mark S. |last5=Visscher |first5=Channon |last6=Lupu |first6=Roxana |last7=Gaarn |first7=Josefine |last8=Fabienne Bieger |first8=Michelle |last9=Freedman |first9=Richard |last10=Saumon |first10=Didier |date=2021-09-01 |title=Cloud busting: enstatite and quartz clouds in the atmosphere of 2M2224-0158 |journal=Monthly Notices of the Royal Astronomical Society |volume=506 |issue=2 |pages=1944β1961 |doi=10.1093/mnras/stab1361 |doi-access=free |arxiv=2105.04268 |bibcode=2021MNRAS.506.1944B |issn=0035-8711}}</ref>
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