Inorganic Solid Phases

M2+2[SiO4] or Te91 (MgMn[SiO4]) Crystal Structure

General Information

  • Phase Label(s): MgMn[SiO4]
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): forsterite/tephroite
  • Pearson Symbol: oP28
  • Space Group: 62
  • Phase Prototype: CaMg[SiO4]
  • Measurement Detail(s): automatic diffractometer; Picker FACS-I (determination of structural parameters), X-rays (determination of cell parameters), X-rays, Mo Kα; λ = 0.070926 nm (determination of structural parameters), T = 291 K (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): orthosilicate
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 773 reflections; F > 2σ(F), R = 0.038
  • Sample Detail(s): tephroite sample from Madagascar (Malagasy Republic), chemical analysis; Mn1.780Mg0.181Fe0.026Ca0.013SiO4, powder (determination of cell parameters), single crystal, 0.20×0.30×0.30 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Mg0.2Mn1.8[SiO4]
  • Alphabetic Formula: Mg0.2Mn1.8[SiO4]
  • Published Formula: M2+2[SiO4] or Te91
  • Refined Formula: Mg0.17Mn1.83O4Si
  • Wyckoff Sequence: 62,dc4a
  • Z Formula Units: 4
  • Density: ρ = 4.04 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]

Anisotropic

Site
β11 [nm2]
β22 [nm2]
β33 [nm2]
β12 [nm2]
β13 [nm2]
β23 [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1615940

  • 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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