Inorganic Solid Phases

(Ca,Mg,Na2,K2)4.5Al9Si27O72·27H2O (K4.5Na4.5Al9Si27O72[H2O]27) Crystal Structure

General Information

  • Phase Label(s): K4.5Na4.5Al9Si27O72[H2O]27
  • Structure Class(es): zeolite ERI
  • Classification by Properties:
  • Mineral Name(s): erionite-K/erionite-Na
  • Pearson Symbol: hP108
  • Space Group: 194
  • Phase Prototype: K2.5Na1.5Ca1.5Mg(Al0.25Si0.75)36O72[H2O]27
  • Measurement Detail(s): Debye film (determination of cell and structural parameters), X-rays, Cu Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate, hydrate
  • Interpretation Detail(s): positions of non-H atoms determined, R = 0.34
  • Sample Detail(s): erionite sample from U.S.A. Oregon, Baker County, Durkee Opal mine, spectroscopy, thermogravimetry; 57.40 wt.% SiO2, 15.60 wt. % Al2O3, 3.40 wt.% K2O, 2.92 wt. % CaO, 1.45 wt.% Na2O, 1.11 wt.% MgO, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: K4.5Na4.5Al9Si27O72[H2O]27
  • Alphabetic Formula: Al9[H2O]27K4.5Na4.5O72Si27
  • Published Formula: (Ca,Mg,Na2,K2)4.5Al9Si27O72·27H2O
  • Refined Formula: Al9O72Si27
  • Wyckoff Sequence: 194,l2k2jih2
  • Z Formula Units: 1
  • Density: ρ = 2.11 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

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

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1614720

  • 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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