Inorganic Solid Phases

K(Al1.5Mg0.5)[Al0.5Si3.5O10](OH)2 (KMg0.5Al2Si3.5O10[OH]2) Crystal Structure

General Information

  • Phase Label(s): KMg0.5Al2Si3.5O10[OH]2
  • Structure Class(es): mica family
  • Classification by Properties:
  • Mineral Name(s): muscovite 3T
  • Pearson Symbol: hP57
  • Space Group: 151
  • Phase Prototype: KAl3Si3O10[OH]2
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; United Kingdom, Chilton-Didcot, Rutherford Appleton Laboratory, ISIS Facility, HRPD (determination of structural parameters), neutrons, time-of-flight (determination of cell and structural parameters), T = 293 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): complete structure determined; temperature dependence studied, Rietveld refinement, RP = 0.07; wRP = 0.06
  • Sample Detail(s): phengite sample from Italy, Alps, Piedmont, Dora Maira massif, energy-dispersive X-ray analysis; 54.38 wt.% SiO2, 24.08 wt.% Al2O3, 10.72 wt.% K2O, 5.94 wt.% MgO, 0.21 wt.% TiO2, 0.09 wt.% Na2O, 0.02 wt.% FeO; trace amounts of talc, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: KMg0.5Al2Si3.5O10[OH]2
  • Alphabetic Formula: Al2KMg0.5O10[OH]2Si3.5
  • Published Formula: K(Al1.5Mg0.5)[Al0.5Si3.5O10](OH)2
  • Refined Formula: Al1.79H2KMg0.64O12Si3.57
  • Wyckoff Sequence: 151,c8ba2
  • Z Formula Units: 3
  • Density: ρ = 2.83 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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1815621

  • 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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