Inorganic Solid Phases

Fe3(PO4)2(OH)3·5H2O, Fe2.98Al0.03(PO4)2(OH)3.02F0.01·4.97H2O (Fe2.76Al0.24[PO4]2[OH]3[H2O]5) Crystal Structure

General Information

  • Phase Label(s): Fe2.76Al0.24[PO4]2[OH]3[H2O]5
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): allanpringite
  • Pearson Symbol: mP88
  • Space Group: 14
  • Phase Prototype: (Fe0.92Al0.08)3[PO4]2[OH]3[H2O]5
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Nonius KAPPA (determination of structural parameters), X-rays, Mo Kα; λ = 0.071073 nm (determination of cell and structural parameters), T = 293 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, orthophosphate, hydrate
  • Interpretation Detail(s): positions of non-H atoms determined, least-squares refinement on F2; 2645 reflections, R = 0.133; wR = 0.353
  • Sample Detail(s): allanpringite sample from Germany, Hesse, Taunus, Essershausen, electron microprobe analysis; 47.84 wt.% Fe2O3, 0.34 wt.% Al2O3, 0.04 wt.% Mn2O3, 0.08 wt.% CuO, 28.56 wt.% P2O5, 0.02 wt.% F, twinned crystal (determination of cell parameters), twinned crystal, 0.03×0.04×0.18 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Fe2.76Al0.24[PO4]2[OH]3[H2O]5
  • Alphabetic Formula: Al0.24Fe2.76[H2O]5[OH]3[PO4]2
  • Published Formula: Fe3(PO4)2(OH)3·5H2O, Fe2.98Al0.03(PO4)2(OH)3.02F0.01·4.97H2O
  • Refined Formula: Al0.25Fe2.75H13O16P2
  • Wyckoff Sequence: 14,e22
  • Z Formula Units: 4
  • Density: ρ = 2.55 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]

Anisotropic

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

Powder Pattern

published defraction line
d [Å]
computed diffraction line for Cu Kα
d [nm]
intensity
I [1]
h [1]
k [1]
l [1]
Radiation
Remark

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1213872

  • 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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