Akimotoite Mineral Data

Akimotoite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Akimotoite Information

Help on Chemical Formula: Chemical Formula: (Mg,Fe)SiO3
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Mg0.75Fe2+0.25SiO3
Help on Environment: Environment: Found in fragments within veins of shock-induced melt. A member of the Ilmenite group. Dimorphic relationship with enstatite and clinoenstatite.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Tenham chondritic meteorite, which fell in 1879 in South Gregory, Queensland, Australia. Link to MinDat.org Location Data.
Help on Name Origin: 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
Help on Name Pronunciation: Name Pronunciation: Akimotoite + Pronunciation Say AKIMOTOITE
Help on Synonym: Synonym: IMA1997-044
 

Akimotoite Image

Click Here for Larger Akimotoite Image in a New Browser Window Images:
Click Here for Larger Akimotoite Image

Akimotoite

Comments: Electron micrograph of akimotoite (Ak) as columnar grains. Aggregates of akimotoite are adjacent to a large clinoenstatite grain (Cen) with (100) twin lamallae. (AmMin 84:268).
Location: Shock-metamorphosed Tenham chondrite. Scale: See Image.
© American Mineralogist

Akimotoite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.84518
Help on Cell Dimensions: Cell Dimensions: a = 4.78, c = 13.6, Z = 4; V = 269.11 Den(Calc)= 2.67
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.616(1), 1.636(0.65), 3.509(0.61),
Click Here for Large Akimotoite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Horiuchi H , Hirano M , Ito E , Matsui Y , American Mineralogist , 67 (1982) p.788-793, MgSiO3 (ilmenite-type): Single crystal X-ray diffraction study

 

Physical Properties of Akimotoite

Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Akimotoite

Help on Optical Data: Optical Data: NCalc= 1.54 - from Gladstone-Dale relationship (KC = 0.2024) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Akimotoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.64 gm/cc
note: Specific Gravity of Akimotoite =2.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEAkimotoite = 5.17 barns/electron
U=PEAkimotoite x rElectron Density= 13.64 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Akimotoite is Not Radioactive
 

Akimotoite Classification
Help on Dana Class: 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
 
04.03.05.01 Ilmenite FeTiO3 R 3 3
 
04.03.05.02 Geikielite MgTiO3 R 3 3
 
04.03.05.03 Pyrophanite MnTiO3 R 3 3
 
04.03.05.04 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
 
04.03.05.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
 
04.03.05.06 Brizziite-III NaSbO3 R 3 3
 
04.03.05.07 Akimotoite! (Mg,Fe)SiO3 R 3 3
Help on Strunz Class: 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
 
09.DA.05 Donpeacorite (Mn,Mg)MgSi2O6 P bca 2/m 2/m 2/m
 
09.DA.05 Akimotoite! (Mg,Fe)SiO3 R 3 3
 
09.DA.05 Enstatite Mg2Si2O6 P bca 2/m 2/m 2/m
 
09.DA.05 Ferrosilite (Fe,Mg)2Si2O6 P bca 2/m 2/m 2/m
 

Other Akimotoite Information
Help on References: References: NAME( AmMin, Vol 84) PHYS. PROP.(Eur. J. Min.,Vol.10,1998)
Help on See Also: 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:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Akimotoite :

A Bijoux Google Search for Akimotoite
Adam'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 :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Akimotoite Specimen Label here :

Akimotoite

(Mg,Fe)SiO3
Dana No: 04.03.05.07 Strunz No: 09.DA.05
Locality:

 

Notes: