Inorganic Solid Phases

Mg6Cr2CO3(OH)16·4H2O (Mg0.75Cr0.25[CO3]0.125[OH]2[H2O]0.5 hex) Crystal Structure

Get Access CIF Download help (pdf)

General Information

  • Phase Label(s): Mg0.75Cr0.25[CO3]0.125[OH]2[H2O]0.5 hex
  • Structure Class(es): –
  • Classification by Properties: –
  • Mineral Name(s): stichtite 2H1
  • Pearson Symbol: hP14
  • Space Group: 194
  • Phase Prototype: (Mg0.75Fe0.25)[CO3]0.125[OH]2[H2O]0.56
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Bruker AXS D8 ADVANCE (determination of structural parameters), X-rays, Cu Kα (determination of cell and structural parameters)
  • Phase Class(es): –
  • Compound Class(es): carbonate, hydroxide, hydrate
  • Interpretation Detail(s): complete structure determined, Rietveld refinement, multiphase, RP = 0.0189; wRP = 0.0253
  • Sample Detail(s): barbertonite sample from South Africa, Barberton, Kaapsehoop mine, amounts of stichtite (54.4 wt.%), powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Mg0.75Cr0.25[CO3]0.125[OH]2[H2O]0.5
  • Alphabetic Formula: [CO3]0.125Cr0.25[H2O]0.5Mg0.75[OH]2
  • Published Formula: Mg6Cr2CO3(OH)16·4H2O
  • Refined Formula: C0.10Cr0.19H2.20Mg0.81O2.39
  • Wyckoff Sequence: 194,hfba
  • Z Formula Units: 2
  • Density: ρ = 2.09 Mg·m−3
View 3D Interactive Structure

Cite this page

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_1226063

  • 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

    Download this citation

    Citation copied