coesite wikipedia - EAS
- Coesite is a form (polymorph) of silicon dioxide Si O 2 that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700 °C, 1,300 °F), are applied to quartz. Coesite was first synthesized by Loring Coes Jr., a chemist at the Norton Company, in 1953.Crystal habit: Inclusions in UHP metamorphic minerals up to 3 mm in sizeCrystal system: MonoclinicMohs scale hardness: 7.5
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See all on Wikipediahttps://en.wikipedia.org/wiki/CoesiteCoesite is a form (polymorph) of silicon dioxide Si O2 that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700 °C, 1,300 °F), are applied to quartz. Coesite was first synthesized by Loring Coes Jr., a chemist at the Norton Company, in 1953. See more
In 1960, a natural occurrence of coesite was reported by Edward C. T. Chao, in collaboration with Eugene Shoemaker, from Barringer Crater, in Arizona, US, which was evidence that the crater must have been formed … See more
• Stishovite, a higher-pressure polymorph
• Seifertite, forming at higher pressure than stishovite See moreCoesite is a tectosilicate with each silicon atom surrounded by four oxygen atoms in a tetrahedron. Each oxygen atom is then bonded to two Si atoms to form a framework. There … See more
Wikipedia text under CC-BY-SA license- https://fr.wikipedia.org/wiki/Coésite
• Coésite, sur Wikimedia Commons
• Polymorphisme du dioxyde de silicium
• Silicate
• Géologie
• « Comment les roches subduites profondément remontent-elles ? », sur CNRSWikipedia · Text under CC-BY-SA license - https://it.wikipedia.org/wiki/CoesiteSee more on it.wikipedia.orgLa struttura molecolare della Coesite consiste di quattro biossidi di silicio tetragonali disposti ad anello, gli anelli sono disposti in una catena. Questa struttura è metastabile all'interno del campo di stabilità del quarzo: la Coesite decade nuovamente in quarzo con un conseguente aumento di volume, questa re…
- Classificazione Strunz: IV/D.01-50
- Gruppo puntuale: 2/m
- Formula chimica: SiO₂
- Gruppo spaziale: C 2/c
- https://en.wikipedia.org/wiki/Talk:Coesite
WebCoesite is part of WikiProject Geology, an attempt at creating a standardized, informative, comprehensive and easy-to-use geology resource. If you would like to participate, you …
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Coesite - Wikipedia
https://static.hlt.bme.hu/.../wiki/Coesite.htmlWebMar 24, 2018 · In metamorphic rocks, coesite is now recognized as one of the best mineral indicators of metamorphism at very high pressures (UHP, or ultrahigh-pressure …
- https://commons.wikimedia.org/wiki/Category:Coesite
WebMedia in category "Coesite" The following 4 files are in this category, out of 4 total. Coesite-pV.svg 720 × 540; 54 KB. Coesite-unit-cell-3D-vdW.png 673 × 530; 67 KB. Coesite.png …
- https://www.wikipedia.org/wiki/Coesite
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- https://en.wiktionary.org/wiki/coesite
Webcoesite (countable and uncountable, plural coesites) A high-pressure polymorph of silica found in extreme conditions such as the impact craters of meteorites, with the chemical …
- https://commons.wikimedia.org/wiki/File:Coesite.png
WebDec 31, 2009 · Add a one-line explanation of what this file represents. Description: Deutsch: Coesit (SiO 2), rote Atome = Sauerstoff
- https://ja.wikipedia.org/wiki/コーサイト
Web性質・特徴 [ 編集] コース石の構造. 非常に高い 圧力 と適度に高い 温度 （約700℃）が 石英 に加わるときに形成される二酸化ケイ素の結晶形の一つ。. コース石の 分子構造 は …
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