Definitions for stishovite
stishovite

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1. stishovitenoun

   A fine-grained mineral, SiO, that is a polymorphic form of quartz formed under very high pressure.

WikipediaRate this definition:0.0 / 0 votes

1. Stishovite

   Stishovite is an extremely hard, dense tetragonal form (polymorph) of silicon dioxide. It is very rare on the Earth's surface; however, it may be a predominant form of silicon dioxide in the Earth, especially in the lower mantle.Stishovite was named after Sergey M. Stishov, a Russian high-pressure physicist who first synthesized the mineral in 1961. It was discovered in Meteor Crater in 1962 by Edward C. T. Chao.Unlike other silica polymorphs, the crystal structure of stishovite resembles that of rutile (TiO2). The silicon in stishovite adopts an octahedral coordination geometry, being bound to six oxides. Similarly, the oxides are three-connected, unlike low-pressure forms of SiO2. In most silicates, silicon is tetrahedral, being bound to four oxides. It was long considered the hardest known oxide (~30 GPa Vickers); however, boron suboxide has been discovered in 2002 to be much harder. At normal temperature and pressure, stishovite is metastable. Stishovite can be separated from quartz by applying hydrogen fluoride (HF); unlike quartz, stishovite will not react.

WikidataRate this definition:0.0 / 0 votes

1. Stishovite

   Stishovite is an extremely hard, dense tetragonal form of silicon dioxide. It was long considered the hardest known oxide; however, boron suboxide has recently been discovered to be much harder. At normal temperature and pressure, stishovite is metastable. Stishovite was named after Sergey M. Stishov, a Russian high-pressure physicist who first synthesized the mineral in 1961. It was discovered in Meteor Crater in 1962 by Edward C. T. Chao. Unlike other silica polymorphs, the crystal structure of stishovite resembles that of rutile. The silicon in stishovite, like in rutile, is in octahedral coordination with oxygen, with six oxygens surrounding every silicon. However, most silicates have silicon in tetrahedral, four-fold coordination with oxygen. Stishovite can be separated from quartz by applying hydrogen fluoride; unlike quartz, stishovite will not react.

How to pronounce stishovite?

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Numerology

1. Chaldean Numerology

   The numerical value of stishovite in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of stishovite in Pythagorean Numerology is: 2

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Stishovite
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Stishovite
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=stishovite