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.
Stishovite: Synthesis by shock wave
Science
By: P. S. De Carli and D.J. Milton
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Abstract
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Stishovite: Synthesis by shock wave |
| Series title | Science |
| DOI | 10.1126/science.147.3654.144 |
| Volume | 147 |
| Issue | 3654 |
| Year Published | 1965 |
| Language | English |
| Publisher | AAAS |
| Description | 2 p. |
| First page | 144 |
| Last page | 145 |