Inorganic Solid Phases

K2(Mg5.600.40)(Si7.32Mg0.68)O20(OH)4 (KMg3.14Si3.66O10[OH]2) Crystal Structure

General Information

  • Phase Label(s): KMg3.14Si3.66O10[OH]2
  • Structure Class(es): mica family
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: mS40
  • Space Group: 12
  • Phase Prototype: KMg3(Al0.25Si0.75)4O10([OH]0.5F0.5)2
  • Measurement Detail(s): Weissenberg photographs (determination of cell and structural parameters), X-rays, Cu Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): positions of non-H atoms determined, least-squares refinement, R = 0.092
  • Sample Detail(s): sample prepared from talc, K2CO3, chemical analysis; 7.26 wt.% SiO2, 0.06 wt.% Al2O3, 0.07 wt.% (Fe2O3 + FeO), 6.29 wt.% MgO, 0.07 wt.% Na2O, 1.92 wt.% K2O, single crystal (determination of cell parameters), single crystal, 0.05×0.3×0.4 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: KMg3.14Si3.66O10[OH]2
  • Alphabetic Formula: KMg3.14O10[OH]2Si3.66
  • Published Formula: K2(Mg5.600.40)(Si7.32Mg0.68)O20(OH)4
  • Refined Formula: H2KMg3.14O12Si3.66
  • Wyckoff Sequence: 12,j3i2hda
  • Z Formula Units: 2
  • Density: ρ = 2.75 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]

Anisotropic

Site
β11 [nm2]
β22 [nm2]
β33 [nm2]
β12 [nm2]
β13 [nm2]
β23 [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1415770

  • 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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