Inorganic Solid Phases

Na6(Ca0.90Mn2+0.35)(Fe3+0.50Ti0.50)[Si6O18]; koashvite (Na6Ca0.9Ti0.5Mn0.35Fe0.5Si6O18) Crystal Structure

General Information

  • Phase Label(s): Na6Ca0.9Ti0.5Mn0.35Fe0.5Si6O18
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): koashvite
  • Pearson Symbol: oP132
  • Space Group: 62
  • Phase Prototype: Na6(Ca0.7Mn0.3)1.25(Ti0.5Fe0.5)Si6O18
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Enraf-Nonius CAD4 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate
  • Interpretation Detail(s): complete structure determined, block-diagonal least-squares refinement, R = 0.108
  • Sample Detail(s): koashvite sample from unknown, single crystal (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Na6Ca0.9Ti0.5Mn0.35Fe0.5Si6O18
  • Alphabetic Formula: Ca0.9Fe0.5Mn0.35Na6O18Si6Ti0.5
  • Published Formula: Na6(Ca0.90Mn2+0.35)(Fe3+0.50Ti0.50)[Si6O18]; koashvite
  • Refined Formula: Ca0.94Fe0.50Mn0.36Na6O18Si6Ti0.50
  • Wyckoff Sequence: 62,d10c11ba
  • Z Formula Units: 4
  • Density: ρ = 2.99 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_1923721

  • 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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