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stishovite

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stishovite

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Wiktionary英語版

出典：Wiktionary

stishovite

語源

Named after Russian physicist Sergey Stishov + -ite.

名詞

stishovite (usually uncountable, 複数形 stishovites)

  1. (mineralogy) A fine-grained mineral, of SiO2, that is a polymorphic form of quartz formed under very high pressure.

同意語

  • stipoverite

参考

Further reading

ウィキペディア英語版

出典：Wikipedia

Stishovite

出典:『Wikipedia』 (2011/05/19 00:37 UTC 版)

英語による解説

ウィキペディア英語版からの引用
引用

Stishovite (after Sergey M. Stishov, a renowned Russian high-pressure physicist who first synthesized this mineral) is an extremely hard, dense tetragonal form (polymorph) of silicon dioxide. It was long considered the hardest known oxide; however, boron suboxide has recently been discovered to be much harder. At normal temperature and pressure, stishovite is metastable, as it will eventually decay to quartz; however, this phase change is slow enough that it has never been observed. Stishovite was synthesized by Stishov in 1961 and discovered in a meteor impact crater in 1962 by Edward C. T. Chao.

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