Inorganic Solid Phases

K2Al4[Si6Al2O20](OH,F)4 (KAl3Si3O10[OH]2 mon) Crystal Structure

General Information

  • Phase Label(s): KAl3Si3O10[OH]2 mon
  • Structure Class(es): mica family
  • Classification by Properties: nonmetal
  • Mineral Name(s): muscovite 2M1
  • Pearson Symbol: mS76
  • Space Group: 15
  • Phase Prototype: KAl2(Al0.25Si0.75)4O10[OH]2-a
  • Measurement Detail(s): automatic diffractometer; Germany, Karlsruhe Forschungszentrum, FR2 reactor (determination of structural parameters), neutrons; λ = 0.1190 nm (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): complete structure determined, least-squares refinement; 625 reflections, R = 0.027
  • Sample Detail(s): muscovite sample from U.S.A. South Dakota, Custer County, Black Hills, Diamond Mine, sample prepared from 2M1-muscovite, chemical analysis; 35.0 wt.% Al2O3, 44.0 wt.% SiO2, 10.1 wt.% K2O, 0.9 wt.% F, 23.9 wt.% Fe2O3, single crystal, 2 mm diameter , 3 mm length (determination of structural parameters)

Substance Summary

  • Standard Formula: KAl3Si3O10[OH]2
  • Alphabetic Formula: Al3KO10[OH]2Si3
  • Published Formula: K2Al4[Si6Al2O20](OH,F)4
  • Refined Formula: Al3H2KO12Si3
  • Wyckoff Sequence: 15,f9e
  • Z Formula Units: 4
  • 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

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_1714313

  • 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)

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