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General Akimotoite Information |
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 Chemical Formula: |
(Mg,Fe)SiO3 | ||
| Composition: |
Molecular Weight = 108.27 gm | ||
| Magnesium 16.84 % Mg 27.92 % MgO | |||
| Iron 12.89 % Fe 16.59 % FeO | |||
| Silicon 25.94 % Si 55.49 % SiO2 | |||
| Oxygen 44.33 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Mg0.75Fe2+0.25SiO3 | ||
| Environment: |
Found in fragments within veins of shock-induced melt. A member of the Ilmenite group. Dimorphic relationship with enstatite and clinoenstatite. | ||
| IMA Status: |
Approved IMA 1998 (Dana # Added) | ||
| Locality: |
Tenham chondritic meteorite, which fell in 1879 in South Gregory, Queensland, Australia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after Syun-iti Akimoto (b. 1925), of the Institute of Geophysics and Solid State Physics, University of Tokyo, specialist in high-pressure research, especially on phase relati onships in the system (Mg,Fe)2 SiO4 at | ||
| Name Pronunciation: |
Akimotoite + Pronunciation  |
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| Synonym: |
IMA1997-044 | ||
Akimotoite Image | |||
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Images:
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Akimotoite Crystallography |
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| Axial Ratios: |
a:c = 1:2.84518 | ||
| Cell Dimensions: |
a = 4.78, c = 13.6, Z = 4; V = 269.11 Den(Calc)= 2.67 | ||
| Crystal System: |
Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.616(1), 1.636(0.65), 3.509(0.61), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Akimotoite |
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| Color: |
Colorless. | ||
| Diaphaneity: |
Transparent | ||
| Luster: |
Vitreous (Glassy) | ||
Optical Properties of Akimotoite |
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| Optical Data: |
NCalc= 1.54 - from Gladstone-Dale relationship (KC = 0.2024) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Akimotoite |
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| Electron Density: |
Bulk Density (Electron Density)=2.64 gm/cc note: Specific Gravity of Akimotoite =2.67 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.03 Boson Index = 0.97 |
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| Photoelectric: |
PEAkimotoite = 5.17 barns/electron U=PEAkimotoite x rElectron Density= 13.64 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Akimotoite is Not Radioactive |
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Akimotoite Classification |
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| Dana Class: |
04.03.05.07 (04)Simple Oxides | ||
| (04.03)with a cation charge of 3+ (A+++2 O3) | |||
| (04.03.05)Ilmenite Group | |||
| Strunz Class: |
09.DA.05 09 - SILICATES (Germanates) | ||
| 09.D - Inosilicates* Structural terminology according to Liebau (1985) | |||
| 09.DA -Inosilicates with 2-periodic single chains, Si2O6; pyroxene family | |||
Other Akimotoite Information |
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| References: |
NAME( AmMin, Vol 84) PHYS. PROP.(Eur. J. Min.,Vol.10,1998) | ||
| See Also: |
Links to other databases for Akimotoite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Akimotoite using: Visit our Advertisers for Akimotoite : A Bijoux Google Search for AkimotoiteAdam's Minerals Google Search for Akimotoite Cape Minerals Google Search for Akimotoite Dakota Matrix Minerals Google Search for Akimotoite Excalibur Mineral Corp. Google Search for Akimotoite Exceptional Minerals Google Search for Akimotoite John Betts Fine Minerals Search for Akimotoite McDougall Minerals Google Search for Akimotoite Mineral News Website Link Rock and Mineral Shows Google Search for Akimotoite Weinrich Minerals, Inc. Google Search for Akimotoite Ask about Akimotoite here : Print or Cut-and-Paste your Akimotoite Specimen Label here :
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