Inorganic Solid Phases

Ca(Mn,Fe)3+14SiO24 (CaMn11.6Fe2.4[SiO4]O20) Crystal Structure

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General Information

  • Phase Label(s): CaMn11.6Fe2.4[SiO4]O20
  • Structure Class(es): –
  • Classification by Properties: –
  • Mineral Name(s): braunite
  • Pearson Symbol: tI320
  • Space Group: 142
  • Phase Prototype: Ca(Mn0.83Fe0.17)14[SiO4]O20
  • Measurement Detail(s): Weissenberg photographs; 44 (determination of cell parameters), automatic diffractometer; Philips PW1100 (determination of structural parameters), X-rays (determination of cell parameters), X-rays, Mo Kα (determination of structural parameters)
  • Phase Class(es): –
  • Compound Class(es): orthosilicate, oxide
  • Interpretation Detail(s): complete structure determined, 1300 reflections; I > 1.65σ(I), R = 0.058; wR = 0.053
  • Sample Detail(s): braunite sample from South Africa, Northern Cape Province, Kalahari manganese field, Wessel's mine, electron microprobe analysis; Ca0.92(Mn11.72Fe2.34)Si1.12O24, single crystal (determination of cell parameters), single crystal, 0.18 mm diameter (determination of structural parameters)

Substance Summary

  • Standard Formula: CaMn11.6Fe2.4[SiO4]O20
  • Alphabetic Formula: CaFe2.4Mn11.6O20[SiO4]
  • Published Formula: Ca(Mn,Fe)3+14SiO24
  • Refined Formula: CaFe2.38Mn11.62O24Si
  • Wyckoff Sequence: 142,g8fedba
  • Z Formula Units: 8
  • Density: ρ = 4.84 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

Anisotropic

Site
U11 [nm2]
U22 [nm2]
U33 [nm2]
U12 [nm2]
U13 [nm2]
U23 [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1615933

  • 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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