Inorganic Solid Phases

2M2-lepidolite (K0.87Na0.12Li1.42Al2.01Si3.39O10[OH]0.8F1.2) Crystal Structure

General Information

  • Phase Label(s): K0.87Na0.12Li1.42Al2.01Si3.39O10[OH]0.8F1.2
  • Structure Class(es): mica family
  • Classification by Properties:
  • Mineral Name(s): polylithionite/trilithionite 2M2
  • Pearson Symbol: mS80
  • Space Group: 15
  • Phase Prototype: Rb0.05K0.88Na0.06Li1.79Ca0.01Al1.31(Al0.16Si0.84)4O10([OH]0.25F0.75)2
  • Measurement Detail(s): precession photographs (determination of structural parameters), X-rays, Mo Kα (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate, fluoride
  • Interpretation Detail(s): positions of non-H atoms determined, full-matrix least-squares refinement, R = 0.072
  • Sample Detail(s): lepidolite sample from Czech Republic, Vysocina Region, Rozna, chemical analysis; (Si3.39Al0.61)(Al1.40Fe2+0.07Mg0.05Mn0.03Li1.05)(Ca0.02Na0.12K0.87Rb0.06Cs0.005)[OH0.8F1.2], single crystal, 0.07×0.30×0.35 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: K0.87Na0.12Li1.42Al2.01Si3.39O10[OH]0.8F1.2
  • Alphabetic Formula: Al2.01F1.2K0.87Li1.42Na0.12O10[OH]0.8Si3.39
  • Published Formula: 2M2-lepidolite
  • Refined Formula: Al2.01F1.20H0.80KLi1.05O10.80Si3.39
  • Wyckoff Sequence: 15,f9ec
  • Z Formula Units: 4
  • Density: ρ = 2.80 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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1924849

  • 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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