Inorganic Solid Phases

2FeO·Fe2O3·SiO2·2H2O (Fe3.7Si1.3O5[OH]4 3T) Crystal Structure

General Information

  • Phase Label(s): Fe3.7Si1.3O5[OH]4 3T
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): cronstedtite 3T
  • Pearson Symbol: hP42
  • Space Group: 144
  • Phase Prototype: Fe3(Fe0.35Si0.65)2O5[OH]4
  • Measurement Detail(s): rotation photographs (determination of cell parameters), Weissenberg photographs (determination of structural parameters), X-rays, Fe Kα, Mo Kα (determination of cell parameters), X-rays, Fe Kα (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate
  • Interpretation Detail(s): positions of non-H atoms determined, trial-and-error
  • Sample Detail(s): cronstedtite sample from Czech Republic, Central Bohemian Region, Kutna Hora (Kuttenberg), single crystal (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Fe1.23Si0.33O1.33[OH]1.67
  • Alphabetic Formula: Fe1.23O1.33[OH]1.67Si0.33
  • Published Formula: 2FeO·Fe2O3·SiO2·2H2O
  • Refined Formula: Fe1.23H1.67O3Si0.33
  • Wyckoff Sequence: 160,ba4
  • Z Formula Units: 3
  • Density: ρ = 3.46 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

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1217837

  • 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)

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