Inorganic Solid Phases

Al2Mg5Si3O10(OH)8 (Mg2.5AlSi1.5O5[OH]4) Crystal Structure

General Information

  • Phase Label(s): Mg2.5AlSi1.5O5[OH]4
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): clinochlore 2M
  • Pearson Symbol: mS112
  • Space Group: 15
  • Phase Prototype: (Mg0.83Al0.17)3(Al0.25Si0.75)2O5[OH]4
  • Measurement Detail(s): film (determination of cell and structural parameters), X-rays, Cu Kα; λ = 0.1537 nm (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): positions of non-H atoms determined, trial-and-error
  • Sample Detail(s): sheridanite sample from U.S.A. Montana, Miles City, chemical analysis; 27.78 wt.% SiO2, 24.30 wt.% Al2O3, 32.71 wt.% MgO, 13.01 wt.% H2O, 1.43 wt.% Fe2O3, 0.35 wt.% FeO, trace amounts of CaO, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Mg2.5AlSi1.5O5[OH]4
  • Alphabetic Formula: AlMg2.5O5[OH]4Si1.5
  • Published Formula: Al2Mg5Si3O10(OH)8
  • Refined Formula: AlH4Mg2.50O9Si1.50
  • Wyckoff Sequence: 15,f12e3d
  • Z Formula Units: 8
  • Density: ρ = 2.67 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

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_1626405

  • 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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