Inorganic Solid Phases

{K}[Fe3−xAlx]<Al1+xSi3−x>O10(OH)2, x= 0.75 (KFe3AlSi3O10[OH]2) Crystal Structure

General Information

  • Phase Label(s): KFe3AlSi3O10[OH]2
  • Structure Class(es): mica family
  • Classification by Properties:
  • Mineral Name(s): annite/siderophyllite 1M
  • Pearson Symbol: mS40
  • Space Group: 12
  • Phase Prototype: KMg3(Al0.25Si0.75)4O10([OH]0.5F0.5)2
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; STOE STADI P (determination of structural parameters), X-rays (determination of cell parameters), X-rays, Mo Kα1 (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): positions of non-H atoms determined; composition dependence studied, Rietveld refinement, RP = 0.0948; wRP = 0.0962; RB = 0.0396
  • Sample Detail(s): annite sample from synthetic, sample prepared from K2CO3, Fe[NO3]3[H2O]9, (C2H5O)4Si, electron microprobe analysis, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: KFe2.25Al2.5Si2.25O10[OH]2
  • Alphabetic Formula: Al2.5Fe2.25KO10[OH]2Si2.25
  • Published Formula: {K}[Fe3−xAlx]<Al1+xSi3−x>O10(OH)2, x= 0.75
  • Refined Formula: Al2.46Fe2.30H2K0.93O12Si2.24
  • Wyckoff Sequence: 12,j3i2hda
  • Z Formula Units: 2
  • Density: ρ = 3.23 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
B [nm2]
Type
Computed
Beq [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1617829

  • 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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