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USGS · 70010574

Stishovite: Synthesis by shock wave

P. S. De Carli·D.J. Milton
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Abstract

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° to 900°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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P. S. De Carli, D.J. Milton. 1965. Stishovite: Synthesis by shock wave. https://doi.org/10.1126/science.147.3654.144

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