Inorganic Solid Phases

K(Fe0.20Al0.48Si1.32)(Fe0.08Al0.24Si1.68)O8 (KFe0.28Al0.72Si3O8) Crystal Structure

General Information

  • Phase Label(s): KFe0.28Al0.72Si3O8
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): sanidine
  • Pearson Symbol: mS52
  • Space Group: 12
  • Phase Prototype: K(Al0.25Si0.75)4O8
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Syntex P1 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 1204 reflections; I > 2σ(I), R = 0.0296; wR = 0.0320
  • Sample Detail(s): sample prepared from SiO2, Al2O3, FeO, KOH, electron microprobe analysis; K0.93(Al0.75Fe0.27)Si3.01O8, single crystal (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: KFe0.28Al0.72Si3O8
  • Alphabetic Formula: Al0.72Fe0.28KO8Si3
  • Published Formula: K(Fe0.20Al0.48Si1.32)(Fe0.08Al0.24Si1.68)O8
  • Refined Formula: Al0.72Fe0.28KO8Si3
  • Wyckoff Sequence: 12,j5i2g
  • Z Formula Units: 4
  • Density: ρ = 2.60 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_1012954

  • 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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