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Xieite Mineral Data

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General Xieite Information

Help on Chemical  Formula: Chemical Formula: FeCr2O4
Help on Composition: Composition: Molecular Weight = 212.12 gm
   Magnesium   1.49 %  Mg    2.47 % MgO
   Titanium    1.81 %  Ti    3.01 % TiO2
   Manganese   0.26 %  Mn    0.33 % MnO
   Aluminum    3.18 %  Al    6.01 % Al2O3
   Vanadium    0.48 %  V     0.86 % V2O5
   Chromium   39.71 %  Cr   51.93 % CrO
   Iron       22.91 %  Fe   29.47 % FeO
   Oxygen     30.17 %  O
             ______        ______ 
             100.00 %       94.08 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.87Mg0.13Mn2+0.01Cr1.62Al0.25Ti0.08V5+0.02O4
Help on Environment: Environment: Occurs in the shock vein. High pressure polymorph of chromite. Potential deep mantle mineral. Spinel group.
Help on IMA Status: IMA Status: Approved IMA 2007 (Dana # Added)
Help on Locality: Locality: Suizhou L6 chondrite: Dayanpo, Suizhou County, Hubei Province, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Xie Xiande, a GIG mineralogist who has made major contribution to the field of mineral shock effects.
Help on Synonym: Synonym: IMA2007-056

Xieite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9895:1:0.3049
Help on Cell Dimensions: Cell Dimensions: a = 9.462, b = 9.562, c = 2.916, Z = 4; V = 263.83 Den(Calc)= 5.34
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Bbmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.65(1), 1.953(0.9), 1.566(0.6),1.337(0.4), 2.389(0.2), 1.425(0.15), 1.439(0.15), 2.089(0.1),

Optical Properties of Xieite

Help on Optical Data: Optical Data: NCalc= 2.03 - from Gladstone-Dale relationship (KC = 0.1931) where Ncalc=Dcalc*KC+1

Calculated Properties of Xieite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.07 gm/cc
note: Specific Gravity of Xieite =5.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEXieite = 16.65 barns/electron
U=PEXieite x rElectron Density= 84.48 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Xieite is Not Radioactive

Xieite Classification

Help on  Dana Class: Dana Class: (07)Multiple Oxides
  (07.02)(A+ B++)2 X4 Spinel group
  (07.02.15)Dana Group Xieite! FeCr2O4 Bbmm 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.BB.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.B - Metal:Oxygen = 3:4 and similar
  04.BB -With only medium-sized cations
04.BB.25 Xieite! FeCr2O4 Bbmm 2/m 2/m 2/m

Other Xieite Information

Help on See Also: See Also: Links to other databases for Xieite :
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

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Dana No: Strunz No: 04.BB.25