Inorganic Solid Phases

Al1.97Fe0.03(Si3.98Al0.02)O10(OH)2 (AlSi2O5[OH] tricl) Crystal Structure

General Information

  • Phase Label(s): AlSi2O5[OH] tricl
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): pyrophyllite 1A
  • Pearson Symbol: aP18
  • Space Group: 2
  • Phase Prototype: AlSi2O5[OH]
  • Measurement Detail(s): automatic diffractometer; 15 (determination of cell parameters), automatic diffractometer; Picker FACS-I (determination of 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; 3214 reflections; I > 0σ(I), R = 0.060; wR = 0.070
  • Sample Detail(s): pyrophyllite sample from Brazil, Bahia, Ibitiara, chemical analysis; 66.04 wt.% SiO2, 28.15 wt.% Al2O3, 0.54 wt.% Fe2O3 et al., single crystal (determination of cell parameters), single crystal, 0.05×0.5×0.6 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: AlSi2O5[OH]
  • Alphabetic Formula: AlO5[OH]Si2
  • Published Formula: Al1.97Fe0.03(Si3.98Al0.02)O10(OH)2
  • Refined Formula: AlHO6Si2
  • Wyckoff Sequence: 2,i9
  • Z Formula Units: 2
  • Density: ρ = 2.81 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]

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_1615949

  • 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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