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- Wadsleyite abstract "Wadsleyite is a high-pressure polymorph of olivine, and is an orthorhombic mineral found in the Peace River meteorite in Alberta, Canada. In phase transformations with increasing pressure from Mg2SiO4-Fe2SiO4 (forsterite – fayalite), olivine is transformed to wadsleyite (β-Mg2SiO4) and then to a spinel-structured ringwoodite (γ-Mg2SiO4). This series of transformations is thought to occur during an extraterrestrial shock event in the meteorite prior to its fall on Earth. With a formula of (Mg,Fe2+)2(SiO4), its cell parameters are as follows: a = 5.7 Å, b = 11.7 Å and c = 8.24 Å. It is polymorphous with ringwoodite and is found to be stable in the transition zone of the Earth’s upper mantle. These regions are from 400–525 kilometres (249–326 mi) in depth. Because of oxygens not bound to silicon in the Si2O7 groups of wadsleyite, it leaves some oxygen atoms underbonded, and as a result, these oxygens are hydrated easily. As a result, there can be high concentrations of hydrogen atoms in the mineral. Hydrous wadsleyite is considered a potential site for water storage in the Earth’s mantle due to the low electrostatic potential of the underbonded oxygen atoms. Although wadsleyite does not contain H in its chemical formula, it may contain more that 3 percent by weight H2O, and may coexist with a hydrous melt at transition zone pressure-temperature conditions. The water solubility and density of wadsleyite are ultimately affected by the temperature and pressure inside of the Earth.Wadsleyite was first identified by Ringwood and Major in 1966 and was confirmed to be a stable phase by Akimoto and Sato in 1968.(Horiuchi and Sawamoto, 1981) The phase was originally known as β-Mg2SiO4 or “beta-phase ” and is a polymorph of olivine, along with minerals ringwoodite. Wadsleyite was named for mineralogist Arthur David Wadsley (1918-1969).".
- Wadsleyite wikiPageExternalLink portal.cgi.).
- Wadsleyite wikiPageExternalLink pccp.).
- Wadsleyite wikiPageID "8949274".
- Wadsleyite wikiPageRevisionID "598303598".
- Wadsleyite category Silicate_minerals.
- Wadsleyite color "Dark green".
- Wadsleyite diaphaneity "Transparent".
- Wadsleyite formula "2".
- Wadsleyite gravity "3.84".
- Wadsleyite habit "Microcrystalline aggregates".
- Wadsleyite hasPhotoCollection Wadsleyite.
- Wadsleyite name "Wadsleyite".
- Wadsleyite opticalprop "Biaxial".
- Wadsleyite refractive "n = 1.76".
- Wadsleyite strunz "9".
- Wadsleyite symmetry "Orthorhombic, Point group: 2/m2/m2/m, Space group: Imma; or monoclinic, Point group 2/m, Space group: I2/m".
- Wadsleyite system "Orthorhombic; or monoclinic".
- Wadsleyite unitCell "a = 5.7 Å, b = 11.71 Å, c = 8.24 Å; Z=8".
- Wadsleyite subject Category:Meteorite_minerals.
- Wadsleyite subject Category:Sorosilicates.
- Wadsleyite type Abstraction100002137.
- Wadsleyite type Material114580897.
- Wadsleyite type Matter100020827.
- Wadsleyite type Mineral114662574.
- Wadsleyite type Part113809207.
- Wadsleyite type PhysicalEntity100001930.
- Wadsleyite type Relation100031921.
- Wadsleyite type Substance100019613.
- Wadsleyite type ChemicalSubstance.
- Wadsleyite type Mineral.
- Wadsleyite type ChemicalObject.
- Wadsleyite type Thing.
- Wadsleyite comment "Wadsleyite is a high-pressure polymorph of olivine, and is an orthorhombic mineral found in the Peace River meteorite in Alberta, Canada. In phase transformations with increasing pressure from Mg2SiO4-Fe2SiO4 (forsterite – fayalite), olivine is transformed to wadsleyite (β-Mg2SiO4) and then to a spinel-structured ringwoodite (γ-Mg2SiO4). This series of transformations is thought to occur during an extraterrestrial shock event in the meteorite prior to its fall on Earth.".
- Wadsleyite label "Wadsleyite".
- Wadsleyite label "Wadsleyite".
- Wadsleyite sameAs Wadsleyite.
- Wadsleyite sameAs m.03bxsdl.
- Wadsleyite sameAs Q4017643.
- Wadsleyite sameAs Q4017643.
- Wadsleyite sameAs Wadsleyite.
- Wadsleyite wasDerivedFrom Wadsleyite?oldid=598303598.
- Wadsleyite isPrimaryTopicOf Wadsleyite.
- Wadsleyite name "Wadsleyite".