Inorganic Solid Phases

(Mg1.936Al0.943Fe0.025Cr0.0740.022)(Si1.027Al0.973)O5(OH)4 (Mg2Al2SiO5[OH]4 tricl1) Crystal Structure

General Information

  • Phase Label(s): Mg2Al2SiO5[OH]4 tricl1
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): amesite 2H2-a
  • Pearson Symbol: aP28
  • Space Group: 1
  • Phase Prototype: (Mg0.67Al0.33)3(Al0.5Si0.5)2O5[OH]4
  • Measurement Detail(s): automatic diffractometer; 15 (determination of cell parameters), automatic diffractometer; Syntex P21 (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): complete structure determined, least-squares refinement; 1719 reflections; I > 2σ(I), R = 0.049; wR = 0.057
  • Sample Detail(s): amesite sample from Russia, Urals, Saranovskoe deposit, electron microprobe analysis; (Mg1.936Al0.943Fe0.025Cr0.0740.022)(Si1.027Al0.0973)O5[OH]4, single crystal (determination of cell parameters), single crystal, 0.08×0.5×0.25 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Mg2Al2SiO5[OH]4
  • Alphabetic Formula: Al2Mg2O5[OH]4Si
  • Published Formula: (Mg1.936Al0.943Fe0.025Cr0.0740.022)(Si1.027Al0.973)O5(OH)4
  • Refined Formula: Al1.99H4Mg2.01O9Si
  • Wyckoff Sequence: 1,a28
  • Z Formula Units: 2
  • Density: ρ = 2.70 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_1615947

  • 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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