Inorganic Solid Phases

sepiolite; Mg16Si24O60(OH)8·nH2O in vacuum (Mg4Si6O15[OH]2[H2O]2.5, T = 300 K) Crystal Structure

Get Access CIF Download help (pdf)

General Information

  • Phase Label(s): Mg4Si6O15[OH]2[H2O]2.5
  • Structure Class(es): –
  • Classification by Properties: –
  • Mineral Name(s): –
  • Pearson Symbol: oP124
  • Space Group: 52
  • Phase Prototype: Mg4Si6O15[OH]2[H2O]2.5
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; U.S.A. New York, Brookhaven National Laboratory, National Synchrotron Light Source NSLS, X7B (determination of structural parameters), X-rays, synchrotron; λ = 0.09492 nm (determination of cell and structural parameters), T = 300 K (determination of cell and structural parameters)
  • Phase Class(es): –
  • Compound Class(es): hydroxide, silicate, hydrate
  • Interpretation Detail(s): positions of non-H atoms determined, Rietveld refinement; 85 variables, wRP = 0.020
  • Sample Detail(s): sepiolite sample from Mexico, Durango, electron microprobe analysis; Mg16Si24O60[OH]8[H2O]n, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Mg4Si6O15[OH]2[H2O]2.5
  • Alphabetic Formula: [H2O]2.5Mg4O15[OH]2Si6
  • Published Formula: sepiolite; Mg16Si24O60(OH)8·nH2O in vacuum
  • Refined Formula: H6.96Mg4O19.48Si6
  • Wyckoff Sequence: 52,e13dc4
  • Z Formula Units: 4
  • Density: ρ = 2.06 Mg·m−3
View 3D Interactive Structure

Cite this page

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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1216762

  • 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

    Download this citation

    Citation copied