Inorganic Solid Phases

Na3K(Si0.5Al0.5)8O16 (KNa3Al4[SiO4]4 nep) Crystal Structure

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General Information

  • Phase Label(s): KNa3Al4[SiO4]4 nep
  • Structure Class(es): –
  • Classification by Properties: –
  • Mineral Name(s): nepheline
  • Pearson Symbol: hP60
  • Space Group: 173
  • Phase Prototype: K0.9(Na0.97Ca0.03)3Al4[SiO4]4
  • Measurement Detail(s): automatic diffractometer; Philips X'Pert MPD (determination of structural parameters), X-rays, Cu Kα (determination of structural parameters), T = 295 K (determination of structural parameters)
  • Phase Class(es): –
  • Compound Class(es): orthosilicate
  • Interpretation Detail(s): complete structure determined, Rietveld refinement, RP = 0.0495; wRP = 0.0302
  • Sample Detail(s): sample prepared from Al[NO3]3[H2O]9, NaNO3, KNO3, EuCl3[H2O]6, powder (determination of structural parameters)

Substance Summary

  • Standard Formula: KNa3Al4Si4O16
  • Alphabetic Formula: Al4KNa3O16Si4
  • Published Formula: Na3K(Si0.5Al0.5)8O16
  • Refined Formula: Al4KNa3O16Si4
  • Wyckoff Sequence: 173,c9b2a
  • Z Formula Units: 2
  • Density: ρ = 2.64 Mg·m−3
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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_1022116

  • 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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