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stishovite
stishovite A rare mineral that is produced when a particularly high-pressure shock wave meteorite impact passes through rock containing quartz. It is a high-density form of silica produced at a pressure of 130 000 bar. Stishovite-bearing fragments in the vicinity of large craters are taken as evidence that the crater is of meteoritic origin. It is named after the Russian mineralogist Sergei Mikhailovich Stishov (1937– ) who helped synthesize it in 1962. See also coesite.
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"stishovite." A Dictionary of Astronomy. 1997. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>. "stishovite." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O80-stishovite.html "stishovite." A Dictionary of Astronomy. 1997. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-stishovite.html |
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stishovite
stishovite A high-density form of crystalline silica (see also QUARTZ) with the same formula SiO2, but formed at pressures greater than 10 GPa; discovered at some meteorite impact sites, but rarely in terrestrial rocks; sp. gr. 4.3; minerals possessing a similar atomic lattice may exist in the Earth's upper mantle.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "stishovite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "stishovite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-stishovite.html AILSA ALLABY and MICHAEL ALLABY. "stishovite." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-stishovite.html |
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