Wadsleyite is an orthorhombic mineral with the formula β-(Mg,Fe)2SiO4. It was first found in nature in the Peace River meteorite from Alberta, Canada....
15 KB (1,690 words) - 12:40, 1 October 2024
exothermic phase transition to the sorosilicate, wadsleyite and, at about 520 km (320 mi) depth, wadsleyite transforms exothermically into ringwoodite, which...
30 KB (3,050 words) - 12:22, 1 August 2024
inferred to be present in large quantities in the Earth's mantle. Olivine, wadsleyite, and ringwoodite are polymorphs found in the upper mantle of the earth...
20 KB (2,109 words) - 09:47, 3 September 2024
of gas around a forming star. Two polymorphs of forsterite are known: wadsleyite (also orthorhombic) and ringwoodite (isometric, cubic crystal system)...
14 KB (1,409 words) - 18:04, 27 April 2024
Mantle Transition Zone is mainly composed of 60 vol% olivine-polymorphs (wadsleyite, ringwoodite) and ~40 vol% majoritic garnet. The top and bottom boundary...
13 KB (1,445 words) - 20:56, 23 September 2024
e., contrary to forsterite there is no intermediate form analogous to wadsleyite; under the conditions prevailing in the upper mantle of the Earth, the...
6 KB (515 words) - 15:03, 3 May 2023
the transition zone (approximately 410–660 km [250–410 mi]), in which wadsleyite (≈ 410–520 km [250–320 mi]) and ringwoodite (≈ 525–660 km [326–410 mi])...
28 KB (3,157 words) - 17:37, 3 August 2024
predicted by the single transition from α- to β- Mg2SiO4 (olivine to wadsleyite). From the Clapeyron slope this discontinuity is expected to be shallower...
25 KB (2,947 words) - 12:19, 9 October 2024
Vishnevite Vivianite Vladimirite Vlasovite Volborthite Vuagnatite Vulcanite Wadsleyite Wagnerite Wairakite Wakabayashilite Wakefieldite Walfordite Wardite Warikahnite...
42 KB (2,782 words) - 13:55, 7 October 2024
phases at the transition zone between Earth's upper and lower mantle, wadsleyite and ringwoodite, could potentially incorporate up to a few weight percent...
32 KB (2,851 words) - 17:38, 20 September 2024
(250 mi) as is predicted by the transition from α- to β-Mg2SiO4 (olivine to wadsleyite). From the Clapeyron slope, this change is predicted to occur at shallower...
6 KB (695 words) - 07:50, 9 August 2024
below that depth, olivine is converted to the higher-pressure mineral wadsleyite. Oceanic plates consist of up to about 100 km of peridotite covered by...
32 KB (3,793 words) - 16:10, 25 August 2024
Orthopyroxene, Clinopyroxene, Garnet Transition Zone 410–660 km 13-23 GPa Wadsleyite, Ringwoodite, Majoritic Garnet Lower Mantle 660–2891 km 23-129 GPa Ferropericlase...
17 KB (2,332 words) - 20:22, 15 May 2024
shallow-focus earthquake. Metastable olivine subducted past the olivine-wadsleyite transition at 320-410 km depth (depending on temperature) is a potential...
18 KB (2,131 words) - 06:14, 18 July 2024
Warikahnite War Welinite Wln Whiterockite Wrc Winchite Wnc Wülfingite Wfg Wadsleyite Wds Warkite Wki Weloganite Wlg Whitlockite Wht Windhoekite Whk Wumuite...
180 KB (418 words) - 05:15, 30 June 2024
phases (e.g. coesite, akimotoite, majorite, ringwoodite, stishovite, wadsleyite). Water bearing minerals, and samples of liquid water (e.g., Zag, Monahans)...
11 KB (1,267 words) - 19:20, 15 February 2023
meteorite) Mg2SiO4 Roaldite (Fe,Ni)4N Schreibersite (Fe,Ni)3P Sinoite Si2N2O Taenite γ-(Ni,Fe) Tetrataenite Troilite FeS Wadsleyite Mg2SiO4 Xifengite Fe5Si3...
5 KB (89 words) - 22:11, 9 April 2024
crystal is formed by repeating 'Z' times the chemical formula). Examples: wadsleyite (Mg2SiO4) a sorosilicate and high pressure polymorph of forsterite and...
46 KB (5,011 words) - 20:22, 26 July 2024
acceleration. For example, olivine transforms into its denser polymorphs, wadsleyite and ringwoodite, at depths of approximately 410 km and 660 km respectively...
82 KB (7,562 words) - 07:09, 26 June 2024
transition zone, it undergoes a phase transition to wadsleyite, and at about 520 km depth, wadsleyite transforms into ringwoodite, which has the spinel...
35 KB (4,061 words) - 10:43, 6 January 2024
anisotropic material at depth beneath a station. In the transition zone, wadsleyite and/or ringwoodite could be aligned in LPO. Below the transition zone...
35 KB (5,684 words) - 07:48, 5 October 2024
IMA1986-008) 4.FA.10 [741] [742] [743] (IUPAC: zinc dihydroxide) Asimowite (wadsleyite: IMA2018-102) 9.B?. [744] [no] [no] (IUPAC: diiron tetraoxysilicate) Asisite...
73 KB (4,972 words) - 14:23, 12 August 2024
(2013). "Water in the Earth's mantle: a solid-state NMR study of hydrous wadsleyite". Chemical Science. 4 (4): 1523. doi:10.1039/c3sc21892a. hdl:1885/77486...
76 KB (8,996 words) - 23:47, 21 July 2024
The uppermost mantle of Kepler-277b is thought to consist of olivine, wadsleyite, and ringwoodite while the lower part of Kepler-277b's upper mantle consists...
7 KB (706 words) - 06:09, 15 July 2023
(clinopyroxenes, garnets, akimotoite, bridgmanite, hiroseite, ahrensite, wadsleyite, post-spinel phases, dense hydrous magnesium silicates); b) aperiodic...
9 KB (902 words) - 19:33, 1 October 2024
CA.10 [3] [4] [5] (IUPAC: dipotassium zirconium (nonaoxotrisilicate)) Wadsleyite (IMA1982-012) 9.BE.02 [6] [7] [8] (IUPAC: dimagnesium tetraoxosilicate)...
33 KB (2,391 words) - 17:36, 9 February 2024
variety of academic and management positions. He discovered the mineral Wadsleyite, which is believed to make up part of the transition zone of the Earth’s...
28 KB (3,120 words) - 00:08, 3 October 2024