Inorganic Solid Phases

Mg0.949Fe0.022Cr2.019O4 (Mg0.5Cr2Fe0.5O4) Crystal Structure

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General Information

  • Phase Label(s): Mg0.5Cr2Fe0.5O4
  • Structure Class(es): spinel family
  • Classification by Properties: –
  • Mineral Name(s): chromite/magnesiochromite
  • Pearson Symbol: cF56
  • Space Group: 227
  • Phase Prototype: MgAl2O4
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; KM-4 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters)
  • Phase Class(es): –
  • Compound Class(es): oxide
  • Interpretation Detail(s): complete structure determined; composition dependence studied, full-matrix least-squares refinement on F2; 155 reflections, R = 0.0191; wR = 0.0412
  • Sample Detail(s): spinel group sample from synthetic, sample prepared from MgO, Cr2O3, Fe2O3 (hematite), electron microprobe analysis; Mg0.949(13)Fe0.022(7)Cr2.019(8)O4, single crystal (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Mg0.977Cr2Fe0.023O4
  • Alphabetic Formula: Cr2Fe0.023Mg0.977O4
  • Published Formula: Mg0.949Fe0.022Cr2.019O4
  • Refined Formula: Cr2Fe0.02Mg0.98O4
  • Wyckoff Sequence: 227,ecb
  • Z Formula Units: 8
  • Density: ρ = 4.43 Mg·m−3
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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_1820796

  • 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)

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