Wadsleyite Mineral Data + 
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- 51.3.4.1 Wadsleyite (Mg,Fe)2SiO4 I2/m 2/m
- VIII/A.06-10 Wadsleyite (Mg,Fe)2SiO4 I2/m 2/m
- VIII/A.06-20 Ringwoodite Mg2SiO4 F d3m 4/m 3 2/m
General Wadsleyite Information |
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 Chemical Formula: |
(Mg,Fe++)2SiO4 | ||
| Composition: |
Molecular Weight = 156.46 gm | ||
| Magnesium 23.30 % Mg 38.64 % MgO | |||
| Iron 17.85 % Fe 22.96 % FeO | |||
| Silicon 17.95 % Si 38.40 % SiO2 | |||
| Oxygen 40.90 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Mg1.5Fe2+0.5SiO4 | ||
| IMA Status: |
Approved IMA 1983 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 66490 | ||
| IMA1982-012 | |||
| PDF 37-415 | |||
Search for Wadsleyite Images | |||
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Images:
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Wadsleyite Crystallography |
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| Axial Ratios: |
a:b:c =0.4896:1:0.713 | ||
| Cell Dimensions: |
a = 5.6715, b = 11.582, c = 8.258, Z = 8; beta = 90.397° V = 542.43 Den(Calc)= 3.83 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.45(1), 2.04(0.7), 1.44(0.6), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Wadsleyite |
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| Color: |
Light gray. | ||
| Density: |
3.84 | ||
Optical Properties of Wadsleyite |
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| Gladstone-Dale: |
CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1984,KPDmeas= 0.1979,KC= 0.2003 |
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| Optical Data: |
Biaxial (?), b=1.76 | ||
Calculated Properties of Wadsleyite |
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| Electron Density: |
relectron=3.77 gm/cc |
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| Fermion Index |
Fermion Index = 0.03566 Boson Index = 0.96434 |
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| Photoelectric: |
PEWadsleyite = 6.48 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Wadsleyite is Not Radioactive |
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Wadsleyite Classification |
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| Dana Class: |
51.3.4.1 (51)Nesosilicate Insular SiO4 Groups Only | ||
| (51.3)with all cations in octahedral [6] coordination | |||
| (51.3.4)Dana Group | |||
| Strunz Class: |
VIII/A.06-10 VIII - Silicates | ||
| VIII/A - Nesosilicates with [SiO4]4-groups, cations of octahedral orientation [6] | |||
| VIII/A.06 - Wadsleyite series | |||
Other Wadsleyite Information |
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| References: |
PHYS. PROP.(Am.Min.,Vol.82,p270-275,1997) OPTIC PROP.(Am.Min.,Vol.82,p270-275,1997) | ||
| See Also: |
Links to other databases for Wadsleyite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - CalTech Mineral Spectroscopy 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - University of Manchester - Mineral Structure 15 - WWW-MINCRYST 16 -École des Mines de Paris Search for Wadsleyite using: Visit our Advertisers for Wadsleyite : Translate Wadsleyite Mineral Data : Ask about Wadsleyite here : Print or Cut-and-Paste your Wadsleyite Specimen Label here :
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