Inorganic Solid Phases

K2Na8Ca(SO4)6 (K2Na8Ca[SO4]6) Crystal Structure

General Information

  • Phase Label(s): K2Na8Ca[SO4]6
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): bubnovaite
  • Pearson Symbol: hP184
  • Space Group: 159
  • Phase Prototype: K2Na8Ca[SO4]6
  • Measurement Detail(s): automatic diffractometer; 15702 (determination of cell parameters), automatic diffractometer; Bruker AXS APEX II DUO (determination of structural parameters), X-rays, Mo Kα; λ = 0.071073 nm (determination of cell and structural parameters), T = 293 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): sulfate
  • Interpretation Detail(s): complete structure determined; absolute structure determined, full-matrix least-squares refinement on F2; 272 variables; 1729 reflections; F > 4σ(F), R = 0.0769; wR = 0.1812
  • Sample Detail(s): bubnovaite sample from Russia, Kamchatka Peninsula, Tolbachik volcanic complex, electron microprobe analysis; Na7.65K2.05(Ca0.67Mg0.11Cu0.13Zn0.09Pb0.06)S6.03O24, twinned crystal (determination of cell parameters), twinned crystal, 0.03×0.12×0.14 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: K2Na8Ca[SO4]6
  • Alphabetic Formula: CaK2Na8[SO4]6
  • Published Formula: K2Na8Ca(SO4)6
  • Refined Formula: Ca1.26K1.70Na8.08O24S6
  • Wyckoff Sequence: 159,c27b8a3
  • Z Formula Units: 4
  • Density: ρ = 2.62 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]

Anisotropic

Site
U11 [nm2]
U22 [nm2]
U33 [nm2]
U12 [nm2]
U13 [nm2]
U23 [nm2]

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_1242261

  • 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