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- Wadsleyite abstract "Wadsleyite is a high-pressure phase of Mg2SiO4 and is polymorphous with the olivine phase forsterite. An orthorhombic mineral with the formula β-Mg2SiO4, it was first found in nature in the Peace River meteorite from Alberta, Canada. It is formed by a phase transformation from forsterite (α-Mg2SiO4) under increasing pressure and eventually transforms into spinel-structured ringwoodite (γ-Mg2SiO4) as pressure increases further. The structure can take up a limited amount of other bivalent cations instead of magnesium, but contrary to the α and γ structures, a β structure with the sum formula Fe2SiO4 is not thermodynamically stable. Its cell parameters are approximately a = 5.7 Å, b = 11.7 Å and c = 8.24 Å.Wadsleyite is found to be stable in the upper part of the transition zone of the Earth’s upper mantle between 410–520 kilometres (250–320 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, allowing for 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 solubility of water and the density of wadsleyite depend on the temperature and pressure in the Earth. Furthermore, the transformation resulting in wadsleyite is thought to occur also in the shock event when a meteorite impacts the Earth or another planet at very high velocity.Wadsleyite was first identified by Ringwood and Major in 1966 and was confirmed to be a stable phase by Akimoto and Sato in 1968. The phase was originally known as β-Mg2SiO4 or “beta-phase”. Wadsleyite was named for mineralogist Arthur David Wadsley (1918-1969).".
- Wadsleyite wikiPageExternalLink portal.cgi.).
- Wadsleyite wikiPageExternalLink pccp.).
- Wadsleyite wikiPageID "8949274".
- Wadsleyite wikiPageLength "11326".
- Wadsleyite wikiPageOutDegree "61".
- Wadsleyite wikiPageRevisionID "659031564".
- Wadsleyite wikiPageWikiLink Alberta.
- Wadsleyite wikiPageWikiLink Alberta,_Canada.
- Wadsleyite wikiPageWikiLink American_Mineralogist.
- Wadsleyite wikiPageWikiLink Angstrom.
- Wadsleyite wikiPageWikiLink Anisotropic.
- Wadsleyite wikiPageWikiLink Anisotropy.
- Wadsleyite wikiPageWikiLink Barium.
- Wadsleyite wikiPageWikiLink Birefringence.
- Wadsleyite wikiPageWikiLink Category:Meteorite_minerals.
- Wadsleyite wikiPageWikiLink Category:Polymorphism_(materials_science).
- Wadsleyite wikiPageWikiLink Category:Sorosilicates.
- Wadsleyite wikiPageWikiLink Cations.
- Wadsleyite wikiPageWikiLink Chondrite.
- Wadsleyite wikiPageWikiLink Crystallography.
- Wadsleyite wikiPageWikiLink David_Price_(British_academic).
- Wadsleyite wikiPageWikiLink Earth_and_Planetary_Science_Letters.
- Wadsleyite wikiPageWikiLink Forsterite.
- Wadsleyite wikiPageWikiLink Geophysical_Research_Letters.
- Wadsleyite wikiPageWikiLink Glossary_of_meteoritics.
- Wadsleyite wikiPageWikiLink Hafnium.
- Wadsleyite wikiPageWikiLink Hypersthene.
- Wadsleyite wikiPageWikiLink Inorganic_compound.
- Wadsleyite wikiPageWikiLink Inorganic_compounds.
- Wadsleyite wikiPageWikiLink International_Mineralogical_Association.
- Wadsleyite wikiPageWikiLink Ion.
- Wadsleyite wikiPageWikiLink Magnesium.
- Wadsleyite wikiPageWikiLink Mantle_(geology).
- Wadsleyite wikiPageWikiLink Meteorite.
- Wadsleyite wikiPageWikiLink Microcrystalline.
- Wadsleyite wikiPageWikiLink Mineral.
- Wadsleyite wikiPageWikiLink Monoclinic.
- Wadsleyite wikiPageWikiLink Monoclinic_crystal_system.
- Wadsleyite wikiPageWikiLink Niobium.
- Wadsleyite wikiPageWikiLink Octahedra.
- Wadsleyite wikiPageWikiLink Octahedron.
- Wadsleyite wikiPageWikiLink Olivine.
- Wadsleyite wikiPageWikiLink Optical.
- Wadsleyite wikiPageWikiLink Optics.
- Wadsleyite wikiPageWikiLink Orthorhombic.
- Wadsleyite wikiPageWikiLink Orthorhombic_crystal_system.
- Wadsleyite wikiPageWikiLink Peace_River_(meteorite).
- Wadsleyite wikiPageWikiLink Physical_Chemistry_Chemical_Physics.
- Wadsleyite wikiPageWikiLink Polymorphism_(materials_science).
- Wadsleyite wikiPageWikiLink Powder_diffraction.
- Wadsleyite wikiPageWikiLink Refractive_index.
- Wadsleyite wikiPageWikiLink Ringwoodite.
- Wadsleyite wikiPageWikiLink Rubidium.
- Wadsleyite wikiPageWikiLink Silicate.
- Wadsleyite wikiPageWikiLink Silicate_minerals.
- Wadsleyite wikiPageWikiLink Silicon.
- Wadsleyite wikiPageWikiLink Sorosilicate.
- Wadsleyite wikiPageWikiLink Space_group.
- Wadsleyite wikiPageWikiLink Specific_gravity.
- Wadsleyite wikiPageWikiLink Spinel.
- Wadsleyite wikiPageWikiLink Strontium.
- Wadsleyite wikiPageWikiLink Tantalum.
- Wadsleyite wikiPageWikiLink Thorium.
- Wadsleyite wikiPageWikiLink Titanium.
- Wadsleyite wikiPageWikiLink University_of_Alberta.
- Wadsleyite wikiPageWikiLink Upper_mantle.
- Wadsleyite wikiPageWikiLink Uranium.
- Wadsleyite wikiPageWikiLink Zirconium.
- Wadsleyite wikiPageWikiLink File:Mg-wadsleyite-pV.svg.
- Wadsleyite wikiPageWikiLinkText "Wadsleyite".
- Wadsleyite wikiPageWikiLinkText "wadsleyite".
- Wadsleyite category Silicate_minerals.
- Wadsleyite category Sorosilicate.
- Wadsleyite color "Dark green".
- Wadsleyite diaphaneity "Transparent".
- Wadsleyite formula "Mg2SiO4".
- 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 wikiPageUsesTemplate Template:Convert.
- Wadsleyite wikiPageUsesTemplate Template:Infobox_mineral.
- Wadsleyite wikiPageUsesTemplate Template:Meteorites.
- Wadsleyite wikiPageUsesTemplate Template:Refbegin.
- Wadsleyite wikiPageUsesTemplate Template:Refend.
- Wadsleyite wikiPageUsesTemplate Template:Reflist.
- Wadsleyite subject Category:Meteorite_minerals.
- Wadsleyite subject Category:Polymorphism_(materials_science).
- Wadsleyite subject Category:Sorosilicates.
- Wadsleyite hypernym Phase.
- Wadsleyite type ChemicalSubstance.
- Wadsleyite type MilitaryConflict.
- Wadsleyite type Mineral.