Inorganic Solid Phases

(Fe2+0.75Mg0.26)(Fe3+0.70Cr0.15Al0.11Si0.04)2O4 (Mg0.25Cr0.3Fe2.15Al0.22Si0.08O4) Crystal Structure

General Information

  • Phase Label(s): Mg0.25Cr0.3Fe2.15Al0.22Si0.08O4
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): magnetite
  • Pearson Symbol: oS28
  • Space Group: 63
  • Phase Prototype: Fe3O4
  • Measurement Detail(s): electron diffraction (determination of cell parameters), electron diffraction; FEI Tecnai G2 F30 ST (determination of structural parameters), electrons; λ = 0.00197 nm (determination of cell and structural parameters), T = 293(2) K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate
  • Interpretation Detail(s): complete structure determined, least-squares refinement; 16 variables; 118 reflections; I > 2σ(I), R = 0.3310; wR = 0.6656
  • Sample Detail(s): magnetite sample from synthetic, sample prepared from SiO2, MgO, FeO, Al2O3, Cr2O3, electron microprobe analysis; Fe2+0.75(1)Fe3+1.39(1)Cr3+0.29(1)Mg0.26(1)Al0.21(1)Si0.08(1)O4; multi-phase sample, single crystal (determination of cell parameters), single crystal, 0.0003×0.002×0.003 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Mg0.25Cr0.3Fe2.15Al0.22Si0.08O4
  • Alphabetic Formula: Al0.22Cr0.3Fe2.15Mg0.25O4Si0.08
  • Published Formula: (Fe2+0.75Mg0.26)(Fe3+0.70Cr0.15Al0.11Si0.04)2O4
  • Refined Formula: Cr0.46Fe2.13Mg0.41O4
  • Wyckoff Sequence: 63,f2c2a
  • Z Formula Units: 4
  • Density: ρ = 5.26 Mg·m−3

Crystallographic Data

Cell Parameters

Published Data
Standardized Data
Unit Cell
Niggli-Reduced Cell
Space Group
a
b
c
α
β
γ
a/b
b/c
c/a
V

Atom Coordinates

Standardized

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation
Co-ord. No.
Atomic Env.

Published

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation

Displacement Parameters

Isotropic

Site
Published
U [nm2]
Type
Computed
Beq [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1235637

  • Copyright

    ©Springer & Material Phases Data System (MPDS), Switzerland & National Institute for Materials Science (NIMS), Japan, 2016

  • Chief Editor

    Pierre Villars, Material Phases Data System (MPDS), CH-6354 Vitznau, Switzerland

    villars.mpds@bluewin.ch

  • Credits

    SpringerMaterials Release 2016.

    Data generated pre-2002: © Springer & MPDS & NIMS; post-2001: © Springer & MPDS

    All Rights Reserved. Version 2016.10.

    Project Coordinator: Shuichi Iwata

    Section-Editor: Karin Cenzual (Crystal Structures)

  • Cite this content

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