Inorganic Solid Phases

lepidolite 2M2 (Rb0.1K0.8Li1.5Mg0.1Al1.8Si3.5O10[OH]F) Crystal Structure

General Information

  • Phase Label(s): Rb0.1K0.8Li1.5Mg0.1Al1.8Si3.5O10[OH]F
  • 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): automatic diffractometer; 15 (determination of cell parameters), automatic diffractometer; Syntex P21 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): hydroxide, silicate, fluoride
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 93 variables; 2764 reflections; I > 2σ(I), R = 0.048; wR = 0.050
  • Sample Detail(s): lepidolite sample from Czech Republic, Vysocina Region, Radkovice, electron microprobe analysis; (K0.79Rb0.07Cs0.03Na0.03Ca0.01)(Li1.48Fe2+0.002Fe3+0.008Mg0.05Mn0.03Al1.30)(Al0.51Si3.49)O11 (anhydrous); 7.40 wt.% F2, single crystal (determination of cell parameters), single crystal, 0.05×0.5×0.5 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Rb0.1K0.8Li1.5Mg0.1Al1.8Si3.5O10[OH]F
  • Alphabetic Formula: Al1.8FK0.8Li1.5Mg0.1O10[OH]Rb0.1Si3.5
  • Published Formula: lepidolite 2M2
  • Refined Formula: Al1.76FHKLi1.48Mg0.11O11Si3.50
  • Wyckoff Sequence: 15,f9ec
  • Z Formula Units: 4
  • Density: ρ = 2.82 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_1615972

  • 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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