Inorganic Solid Phases

K(NaMg2)Si4O10F2, 1M (KNaMg2Si4O10F2) Crystal Structure

General Information

  • Phase Label(s): KNaMg2Si4O10F2
  • Structure Class(es): mica family
  • Classification by Properties:
  • Mineral Name(s): shirokshinite
  • Pearson Symbol: mS40
  • Space Group: 12
  • Phase Prototype: K0.8(Mg0.87Mn0.03Fe0.07Al0.03)3(Al0.3Si0.7)4O10[OH]2
  • Measurement Detail(s): automatic diffractometer; 10 (determination of cell parameters), automatic diffractometer; Siemens P4 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate, fluoride
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 715 reflections; F > 4σ(F), R = 0.129
  • Sample Detail(s): shirokshinite sample from Russia, Kola Peninsula, Khibiny massif, sample prepared from shirokshinite, electron microprobe analysis; (K0.90Na0.02)(Na0.92Mg1.97Fe2+0.09Mn0.01Ti0.01)(Si3.98Al0.02)O9.995F2.01, single crystal (determination of cell parameters), single crystal, 0.03×0.08×0.15 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: KNaMg2Si4O10F2
  • Alphabetic Formula: F2KMg2NaO10Si4
  • Published Formula: K(NaMg2)Si4O10F2, 1M
  • Refined Formula: F2KMg2NaO10Si4
  • Wyckoff Sequence: 12,j3i2hda
  • Z Formula Units: 2
  • Density: ρ = 2.91 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]

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_1601511

  • 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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