/stish"euh vuyt'/, n. Mineral.
a rare polymorph of quartz, SiO2, formed under very high pressure, as by meteorite impact. Cf. coesite.
[1960-65; named after S. M. Stishov, 20th-century Russian mineralogist; see -ITE1]

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      high-pressure, metastable polymorph of silica (SiO2), having a rutile-type tetragonal structure; silicon is in six-fold coordination with oxygen while each oxygen atom is shared with three silicon atoms. Stishovite was first discovered in sandstone that had been converted to glass at Meteor Crater, Ariz., and its occurrence with coesite in many other craters is evidence that it was formed by kinetic energy imparted by large-scale impact on the surrounding rock.

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Universalium. 2010.

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  • stishovite — [ stɪʃəvʌɪt] noun a dense form of silica produced by very high pressures, e.g. in meteorite craters. Origin 1960s: from the name of the Russian chemist Sergei M. Stishov + ite1 …   English new terms dictionary

  • stishovite — stish·ov·ite …   English syllables

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  • silica mineral — Any of the forms of silicon dioxide (SiO2), including quartz, tridymite, cristobalite, coesite, stishovite, melanophlogite, lechatelierite, and chalcedony. Various kinds of silica minerals have been produced synthetically. * * * Introduction… …   Universalium

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