Stishovite: Synthesis by Shock Wave

Details Stishovite: Synthesis by Shock Wave Stishovite: Synthesis by Shock Wave

Jan 1965

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965sci...147..144d&link_type=abstract

Science, Volume 147, Issue 3654, pp. 144-145

Computer Science

18

Scientific paper

Small amounts of stishovite were separated from specimens of explosively shocked sandstones, novaculite, and single-crystal quartz. Estimated peak pressures for the syntheses ranged from 150 to 280 kilobars, and shock temperatures were from 150 degrees to 900 degrees C. No coesite was detected in any sample. It is suggested that quartz can invert during shock to a short-range-order phase, with sixfold coordination. A small portion of this phase may develop the long-range order of stishovite, and, during the more protracted decrease of the pressure pulse through the stability field of coesite accompanying meteorite crater formation, a portion may invert to coesite.

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