Inorganic Solid Phases

Ca8.12(Al7.99Mn3.41Mg0.71Fe0.30)Si11.84O56−xOHx (Ca2Mg0.3Mn0.45Al2.25Si3O11[OH]3) Crystal Structure

General Information

  • Phase Label(s): Ca2Mg0.3Mn0.45Al2.25Si3O11[OH]3
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): pumpellyite-(Mn2+)
  • Pearson Symbol: mS88
  • Space Group: 12
  • Phase Prototype: Ca2(Mg0.1Mn0.15Al0.75)3Si3O11[OH]3
  • Measurement Detail(s): automatic diffractometer (determination of cell and structural parameters), synchrotron (determination of cell parameters), X-rays, synchrotron (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): positions of non-H atoms determined, Rietveld refinement; 89 variables; 25510 reflections, RP = 0.098; wRP = 0.125
  • Sample Detail(s): pumpellyite sample from Italy, Apennines, Liguria, Passo del Bracco complex, electron microprobe analysis; 34.76 wt.% SiO2, 22.05 wt.% Al2O3, 1.42 wt.% Fe2O3, 6.37 wt.% MnO, 2.27 wt.% MgO, 21.35 wt.% CaO; small amounts of quartz and braunite, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Ca2Mg0.175Mn0.825Al2Si3O11[OH]3
  • Alphabetic Formula: Al2Ca2Mg0.175Mn0.825O11[OH]3Si3
  • Published Formula: Ca8.12(Al7.99Mn3.41Mg0.71Fe0.30)Si11.84O56−xOHx
  • Refined Formula: Al2.24Ca2H4Mg0.29Mn0.47O14Si3
  • Wyckoff Sequence: 12,j4i13f
  • Z Formula Units: 4
  • Density: ρ = 3.32 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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1617474

  • 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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