Inorganic Solid Phases

Al9BSi2O19 (Al9Si2[BO3]O16) Crystal Structure

General Information

  • Phase Label(s): Al9Si2[BO3]O16
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): boromullite
  • Pearson Symbol: oS72
  • Space Group: 36
  • Phase Prototype: Al8(Al0.5Si0.5)2Si[BO3]O16
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Siemens SMART (determination of structural parameters), X-rays, Mo Kα; λ = 0.071073 nm (determination of cell and structural parameters), T = 293 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): orthoborate, silicate
  • Interpretation Detail(s): average structure determined; absolute structure determined, least-squares refinement; 86 variables; 527 reflections; I > 2σ(I), R = 0.0484
  • Sample Detail(s): boromullite sample from Australia, Northern Territory, Mt. Stafford, electron microprobe analysis; Mg0.01Fe0.03Al8.88Si1.93B1.14O18.94, single crystal (determination of cell parameters), single crystal, 0.03×0.10×0.10 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Al9Si2[BO3]O16
  • Alphabetic Formula: Al9[BO3]O16Si2
  • Published Formula: Al9BSi2O19
  • Refined Formula: Al9BO19Si2
  • Wyckoff Sequence: 36,b3a12
  • Z Formula Units: 2
  • Density: ρ = 3.09 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]

Powder Pattern

published defraction line
d [Å]
computed diffraction line for Cu Kα
d [nm]
intensity
I [1]
h [1]
k [1]
l [1]
Radiation
Remark

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1221606

  • 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

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