Inorganic Solid Phases

Al5.65Si0.35O9.175 (Al2.3Si0.7O4.85) Crystal Structure

General Information

  • Phase Label(s): Al2.3Si0.7O4.85
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): mullite
  • Pearson Symbol: oP24
  • Space Group: 55
  • Phase Prototype: Al(Al0.7Si0.3)2O4.8
  • Measurement Detail(s): automatic diffractometer (determination of cell and structural parameters), X-rays, Cu Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate
  • Interpretation Detail(s): complete structure determined, Rietveld refinement, RP = 0.1633; wRP = 0.0675; RB = 0.0728
  • Sample Detail(s): mullite sample from synthetic, sample prepared from aluminum sec-butylate, SiCl4, energy-dispersive X-ray analysis; amounts of γ-alumina, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Al2.83Si0.17O4.585
  • Alphabetic Formula: Al2.83O4.585Si0.17
  • Published Formula: Al5.65Si0.35O9.175
  • Refined Formula: Al2.82O4.58Si0.18
  • Wyckoff Sequence: 55,hg5d
  • Z Formula Units: 2
  • Density: ρ = 2.99 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
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_1617049

  • 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)

  • Cite this content

    Citation copied