Inorganic Solid Phases

K2Mg2(SO4)3 (K2Mg2[SO4]3) Crystal Structure

General Information

  • Phase Label(s): K2Mg2[SO4]3
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): langbeinite
  • Pearson Symbol: cP76
  • Space Group: 198
  • Phase Prototype: K2Mg2[SO4]3
  • Measurement Detail(s): Guinier film; 10 (determination of cell parameters), automatic diffractometer; Siemens-STOE (determination of structural parameters), X-rays, Cu Kα (determination of cell parameters), X-rays, Mo Kα (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): sulfate
  • Interpretation Detail(s): complete structure determined; composition dependence studied, least-squares refinement; 650 reflections; I > 2σ(I), R = 0.0314
  • Sample Detail(s): langbeinite sample from synthetic, sample prepared from MgSO4, K2SO4, powder (determination of cell parameters), single crystal, 0.72 mm diameter (determination of structural parameters)

Substance Summary

  • Standard Formula: K2Mg2[SO4]3
  • Alphabetic Formula: K2Mg2[SO4]3
  • Published Formula: K2Mg2(SO4)3
  • Refined Formula: K2Mg2O12S3
  • Wyckoff Sequence: 198,b5a4
  • Z Formula Units: 4
  • Density: ρ = 2.82 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

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_2090058

  • 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

    Citation copied