Inorganic Solid Phases

K2Ca[Si4O10]·5H2O; cryptophyllite (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), X-rays (determination of cell parameters)
  • Phase Class(es):
  • Compound Class(es): silicate, hydrate
  • Interpretation Detail(s): cell parameters determined
  • Sample Detail(s): cryptophyllite sample from Russia, Kola Peninsula, Khibiny massif, Mt. Rasvumchorr, energy-dispersive X-ray analysis; 1.12 wt.% Na2O, 17.73 wt.% K2O, 11.59 wt.% CaO, 0.08 wt.% Al2O3, 50.24 wt.% SiO2, powder (determination of cell parameters)

Substance Summary

  • Standard Formula: K2CaSi4O10[H2O]5
  • Alphabetic Formula: [H2O]5CaK2O10Si4
  • Published Formula: K2Ca[Si4O10]·5H2O; cryptophyllite
  • Refined Formula:
  • Wyckoff Sequence:
  • Z Formula Units: 4
  • Density: ρ = 2.20 Mg·m−3

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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

Powder Pattern

published defraction line
d [Å]
computed diffraction line for Cu Kα
d [nm]
intensity
I [1]
h [1]
k [1]
l [1]
Radiation
Remark

Experimental Details

Reference

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1939794

  • 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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