Inorganic Solid Phases

phengite-3T (KMg0.75Fe0.04Al1.4Si3.81O10[OH]1.2F0.8 trig) Crystal Structure

General Information

  • Phase Label(s): KMg0.75Fe0.04Al1.4Si3.81O10[OH]1.2F0.8 trig
  • Structure Class(es): mica family
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: hP57
  • Space Group: 151
  • Phase Prototype: KAl3Si3O10[OH]2
  • Measurement Detail(s): automatic diffractometer; 20 (determination of cell parameters), automatic diffractometer; Siemens P4 (determination of structural parameters), X-rays (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate, fluoride
  • Interpretation Detail(s): complete structure determined; pressure dependence studied, full-matrix least-squares refinement; 1230 reflections; I > 2σ(I), R = 0.098; wR = 0.076
  • Sample Detail(s): phengite sample from synthetic, electron microprobe analysis; K0.75(Al1.21Mg0.75Fe0.04)(Al0.19Si3.81)O10[OH1.2F0.8], single crystal (determination of cell parameters), single crystal, 0.130 mm diameter (determination of structural parameters)

Substance Summary

  • Standard Formula: KMg0.75Fe0.04Al1.4Si3.81O10[OH]1.2F0.8
  • Alphabetic Formula: Al1.4F0.8Fe0.04KMg0.75O10[OH]1.2Si3.81
  • Published Formula: phengite-3T
  • Refined Formula: Al1.40F0.80Fe0.04H1.20KMg0.76O11.20Si3.80
  • Wyckoff Sequence: 151,c8ba2
  • Z Formula Units: 3
  • Density: ρ = 2.85 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_1601875

  • 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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