Inorganic Solid Phases

Mg2Al4(Si0.85Ge0.15)5O18 (Mg2Al4Ge0.75Si4.25O18 ht) Crystal Structure

General Information

  • Phase Label(s): Mg2Al4Ge0.75Si4.25O18 ht
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: hP58
  • Space Group: 192
  • Phase Prototype: Be3Al2Si6O18
  • Measurement Detail(s): automatic diffractometer; Rigaku AFC (determination of structural parameters), X-rays, Mo Kα (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 859 reflections, R = 0.051
  • Sample Detail(s): cordierite sample from synthetic, sample prepared from Mg2Al4(Si0.40Ge0.60)5O18, electron microprobe analysis; no indication of flux, powder (determination of cell parameters), single crystal, 0.21 mm diameter (determination of structural parameters)

Substance Summary

  • Standard Formula: Mg2Al4Ge0.75Si4.25O18
  • Alphabetic Formula: Al4Ge0.75Mg2O18Si4.25
  • Published Formula: Mg2Al4(Si0.85Ge0.15)5O18
  • Refined Formula: Al4.01Ge0.72Mg2O18Si4.27
  • Wyckoff Sequence: 192,ml2fc
  • Z Formula Units: 2
  • Density: ρ = 2.62 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_2041163

  • 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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