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stishovite

American  
[stish-uh-vahyt] / ˈstɪʃ əˌvaɪt /

noun

Mineralogy.
  1. a rare polymorph of quartz, SiO 2 , formed under very high pressure, as by meteorite impact.


Etymology

Origin of stishovite

1960–65; named after S. M. Stishov, 20th-century Russian mineralogist; see -ite 1

Example Sentences

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Specifically, the silica polymorphs in question were seifertite and stishovite, which are chemically identical to quartz.

From Salon • Feb. 8, 2024

The authors determined that seifertite exists as the phase between stishovite and a third silica polymorph, α-cristobalite, also present in the sample.

From Science Daily • Feb. 6, 2024

Because seifertite and stishovite are easily disturbed by thermal metamorphism, they inferred the silica fragment likely originated from the collision that formed the Aristarchus crater.

From Science Daily • Feb. 6, 2024

Creeping through the sample were crystalline veins made of iron-rich ringwoodite, a high-pressure version of a more common mineral called olivine, much as stishovite is a high-pressure variant of quartz.

From Scientific American • Jun. 18, 2014

Surrounding a patch of quasicrystal was stishovite, an ultra-high-pressure form of quartz.

From Scientific American • Jun. 18, 2014