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- Stishovite abstract "Stishovite is an extremely hard, dense tetragonal form (polymorph) of silicon dioxide. It is very rare on the earth's surface. It may however 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 recently been discovered 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.".
- Stishovite thumbnail Stishovite.png?width=300.
- Stishovite wikiPageExternalLink stishovi.htm.
- Stishovite wikiPageExternalLink meteor.htm.
- Stishovite wikiPageID "1792340".
- Stishovite wikiPageRevisionID "584165927".
- Stishovite birefringence "δ = 0.027".
- Stishovite category "Mineral".
- Stishovite color "Colorless".
- Stishovite diaphaneity "Transparent to translucent".
- Stishovite formula "SiO2".
- Stishovite gravity "4.287".
- Stishovite hasPhotoCollection Stishovite.
- Stishovite luster "Vitreous".
- Stishovite mohs "9".
- Stishovite name "Stishovite".
- Stishovite opticalprop "Uniaxial".
- Stishovite refractive "nω = 1.799–1.800 nε = 1.826–1.845".
- Stishovite strunz "4".
- Stishovite symmetry Hermann%E2%80%93Mauguin_notation.
- Stishovite symmetry "Space group: P 42/mnm".
- Stishovite symmetry "Tetragonal ditetragonal dipyramidal".
- Stishovite system Tetragonal_crystal_system.
- Stishovite unitCell "a = 4.1772 Å, c = 2.6651 Å; Z=2".
- Stishovite wordnet_type synset-mineral-noun-1.
- Stishovite subject Category:Impact_event_minerals.
- Stishovite subject Category:Quartz_varieties.
- Stishovite subject Category:Superhard_materials.
- Stishovite type Abstraction100002137.
- Stishovite type Assortment108398773.
- Stishovite type Collection107951464.
- Stishovite type Group100031264.
- Stishovite type ImpactEventMinerals.
- Stishovite type Material114580897.
- Stishovite type Matter100020827.
- Stishovite type Mineral114662574.
- Stishovite type Part113809207.
- Stishovite type PhysicalEntity100001930.
- Stishovite type QuartzVarieties.
- Stishovite type Relation100031921.
- Stishovite type Substance100019613.
- Stishovite type SuperhardMaterials.
- Stishovite type ChemicalSubstance.
- Stishovite type Mineral.
- Stishovite type ChemicalObject.
- Stishovite type Thing.
- Stishovite comment "Stishovite is an extremely hard, dense tetragonal form (polymorph) of silicon dioxide. It is very rare on the earth's surface. It may however 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.".
- Stishovite label "Stishovit".
- Stishovite label "Stishovita".
- Stishovite label "Stishovite".
- Stishovite label "Stishovite".
- Stishovite label "Stishovite".
- Stishovite label "Stiszowit".
- Stishovite label "スティショバイト".
- Stishovite label "斯石英".
- Stishovite sameAs Stishovit.
- Stishovite sameAs Stishovita.
- Stishovite sameAs Stishovite.
- Stishovite sameAs Stishovite.
- Stishovite sameAs スティショバイト.
- Stishovite sameAs 스티쇼바이트.
- Stishovite sameAs Stiszowit.
- Stishovite sameAs m.05xcgs.
- Stishovite sameAs Q420620.
- Stishovite sameAs Q420620.
- Stishovite sameAs Stishovite.
- Stishovite wasDerivedFrom Stishovite?oldid=584165927.
- Stishovite depiction Stishovite.png.
- Stishovite isPrimaryTopicOf Stishovite.
- Stishovite name "Stishovite".