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Stishovite (after S.M. Stishov, 20th-century Russian mineralogist) is a dense tetragonal form (polymorph) of silicon dioxide that is naturally formed only, so far as is known, at the very high shock pressures (>100 kbar = 10 GPa) and temperatures (> 1200°C) present during hypervelocity meteorite impact into quartz-bearing rock. Stishovite may also be synthesized by duplicating these conditions in the laboratory, either isostatically or through shock (see shocked quartz).

See also

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Stishovite". A list of authors is available in Wikipedia.
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