Inorganic Solid Phases

Mn2+6[Si5(V5+,As5+)O18(OH)] (Ca0.2V0.72Mn5.69Si5.23As0.14O18[OH]) Crystal Structure

General Information

  • Phase Label(s): Ca0.2V0.72Mn5.69Si5.23As0.14O18[OH]
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): medaite
  • Pearson Symbol: mP124
  • Space Group: 14
  • Phase Prototype: (V0.815As0.185)Mn6Si5O18[OH]
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Bruker AXS SMART APEX II (determination of structural parameters), X-rays, Mo Kα; λ = 0.071069 nm (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): complete structure determined, least-squares refinement; 284 variables, R = 0.0488; wR = 0.1060
  • Sample Detail(s): medaite sample from Switzerland, Graubünden (Grisons), Val Ferrera, Fianel mine, electron microprobe analysis; (Mn2+5.68Ca0.09Mg0.01Cu0.01V3+0.21)[Si5.00(V5+0.54As5+0.39Si0.07)]O18.14[OH]0.86, single crystal (determination of cell parameters), single crystal, 0.025×0.025×0.025 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Ca0.1V0.7Mn5.7Si5.1As0.4O18.1[OH]0.9
  • Alphabetic Formula: As0.4Ca0.1Mn5.7O18.1[OH]0.9Si5.1V0.7
  • Published Formula: Mn2+6[Si5(V5+,As5+)O18(OH)]
  • Refined Formula: As0.09HMn6O19Si5.07V0.84
  • Wyckoff Sequence: 14,e31
  • Z Formula Units: 4
  • Density: ρ = 3.82 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

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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1225435

  • 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