Inorganic Solid Phases

Ca8(Mg1.92Cr1.28Al0.8)(Al5.52Cr2.48)Si12O42.12(OH)13.88 (Ca2Mg0.48Cr0.94Al1.58Si3O10.52[OH]3.48) Crystal Structure

General Information

  • Phase Label(s): Ca2Mg0.48Cr0.94Al1.58Si3O10.52[OH]3.48
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): pumpellyite-(Mg)
  • Pearson Symbol: mS88
  • Space Group: 12
  • Phase Prototype: Ca2(Mg0.1Mn0.15Al0.75)3Si3O11[OH]3
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Japan, Tsukuba, High Energy Accelerator Research Organization (KEK), KENS, VEGA (determination of structural parameters), neutrons, time-of-flight (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): complete structure determined, Rietveld refinement, RP = 0.0160; wRP = 0.0193; RB = 0.0145
  • Sample Detail(s): pumpellyite sample from Russia, Urals, Sarani, chemical analysis; K0.03(1)Na0.07(2)Ca7.82(15)Mg1.95(17)Mn0.01(1)Fe3+0.05(2)V3+0.01(2)Cr3.77(32)Al6.52(27)Ti0.02(2)Si11.82(14)O42.06[OH]13.94, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Ca2Mg0.48Cr0.94Al1.58Si3O10.52[OH]3.48
  • Alphabetic Formula: Al1.58Ca2Cr0.94Mg0.48O10.52[OH]3.48Si3
  • Published Formula: Ca8(Mg1.92Cr1.28Al0.8)(Al5.52Cr2.48)Si12O42.12(OH)13.88
  • Refined Formula: Al1.58Ca2Cr0.94H4Mg0.48O14Si3
  • Wyckoff Sequence: 12,j4i13f
  • Z Formula Units: 4
  • Density: ρ = 3.31 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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1217106

  • 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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