Inorganic Solid Phases

K2Ca[Si4O10]·5H2O (K2CaSi4O10[H2O]5) Crystal Structure

General Information

  • Phase Label(s): K2CaSi4O10[H2O]5
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s): cryptophyllite
  • Pearson Symbol: mP88
  • Space Group: 14
  • Phase Prototype: K2CaSi4O10[H2O]5
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; France, Grenoble, European Synchrotron Radiation Facility ESRF, SNBL (determination of structural parameters), X-rays, synchrotron; λ = 0.069978 nm (determination of cell and structural parameters), T = 296(1) K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate, hydrate
  • Interpretation Detail(s): positions of non-H atoms determined, full-matrix least-squares refinement on F2; 201 variables; 2224 reflections, R = 0.1092; wR = 0.2056
  • Sample Detail(s): cryptophyllite sample from Russia, Kola Peninsula, Khibiny massif, Mt. Rasvumchorr, electron microprobe analysis; (K1.80Na0.17)Ca0.99Al0.01Si3.99O9.94[OH]0.06[H2O]5.07; amounts of shlykovite (60 wt.%), single crystal (determination of cell parameters), single crystal, 0.012×0.084×0.096 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: K2CaSi4O10[H2O]5
  • Alphabetic Formula: Ca[H2O]5K2O10Si4
  • Published Formula: K2Ca[Si4O10]·5H2O
  • Refined Formula: CaH10K2O15Si4
  • Wyckoff Sequence: 14,e22
  • Z Formula Units: 4
  • Density: ρ = 2.20 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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1225280

  • 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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