Inorganic Solid Phases

La9.75Ge6O26.62 (La4.875[GeO4]3O1.31 rt) Crystal Structure

General Information

  • Phase Label(s): La4.875[GeO4]3O1.31 rt
  • Structure Class(es): apatite family
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: aP42
  • Space Group: 2
  • Phase Prototype: La4.875[GeO4]3O1.31
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Switzerland, Villigen, Paul Scherrer Institute, Laboratory for Neutron Scattering, SINQ, HRPT (determination of structural parameters), X-rays, synchrotron; λ = 0.0400269 nm (determination of cell parameters), neutrons; λ = 0.18856 nm (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): orthogermanate, oxide
  • Interpretation Detail(s): complete structure determined, Rietveld refinement; 82 variables, R = 0.0128; RP = 0.0246; wRP = 0.0316
  • Sample Detail(s): apatite group sample from, sample prepared from La2O3, GeO2 (α-quartz), powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: La4.875[GeO4]3O1.31
  • Alphabetic Formula: [GeO4]3La4.875O1.31
  • Published Formula: La9.75Ge6O26.62
  • Refined Formula: Ge3La4.88O13
  • Wyckoff Sequence: 2,i21
  • Z Formula Units: 2
  • Density: ρ = 5.92 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_1320244

  • 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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