Inorganic Solid Phases

Na(LiAl2)(Si2Al2)O10(OH)2 (NaLiAl4Si2O10[OH]2) Crystal Structure

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General Information

  • Phase Label(s): NaLiAl4Si2O10[OH]2
  • Structure Class(es): mica family
  • Classification by Properties: –
  • Mineral Name(s): ephesite
  • Pearson Symbol: aP40
  • Space Group: 1
  • Phase Prototype: NaLiAl4Si2O10[OH]2
  • Measurement Detail(s): automatic diffractometer (determination of cell and structural parameters), X-rays, Mo 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; 1619 reflections; I > 2σ(I), R = 0.099
  • Sample Detail(s): ephesite sample from South Africa, Northern Cape Province, Postmasburg, electron microprobe analysis; 32.55 wt.% SiO2, 54.97 wt.% Al2O3, 3.40 wt.% Li2O, 7.87 wt.% Na2O, single crystal (determination of cell parameters), single crystal, 0.03×0.82×0.91 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: NaLiAl4[SiO4]2O2[OH]2
  • Alphabetic Formula: Al4LiNaO2[OH]2[SiO4]2
  • Published Formula: Na(LiAl2)(Si2Al2)O10(OH)2
  • Refined Formula: Al4H2LiNaO12Si2
  • Wyckoff Sequence: 9,a20
  • Z Formula Units: 4
  • Density: ρ = 2.96 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
B [nm2]
Type
Computed
Beq [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1624459

  • 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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