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Title: Crystal structures of potassium-exchanged forms of catapleiite and hilairite

Abstract

The crystal structures of potassium-exchanged forms of catapleiite and hilairite of the compositions (K{sub 0.49}Ca{sub 0.42}Na{sub 0.26})ZrSi{sub 3}O{sub 9} . 2[(H{sub 2}O){sub 0.8}(H{sub 3}O){sub 0.2}] and K{sub 0.51}ZrSi{sub 3}O{sub 9} . 3[(H{sub 2}O){sub 0.5}K{sub 0.27}(H{sub 3}O){sub 0.23}], respectively, were studied by X-ray diffraction and IR spectroscopy. Both structures retain the heteropolyhedral frameworks of the parent minerals formed by Zr octahedra and Si tetrahedra. The K cations occupy different positions in these minerals. In K-exchanged catapleiite, K cations are located only in the position occupied by Na in the structure of the parent mineral. In the K-exchanged form of hilairite, K cations are not only involved in the Na position but also partially occupy the H{sub 2}O position.

Authors:
; ; ;  [1]; ;  [2];  [3]
  1. Moscow State University, Faculty of Geology (Russian Federation)
  2. University of Pisa, Department of Earth Sciences (Italy)
  3. Russian Academy of Sciences, Institute of Problems of Chemical Physics (Russian Federation)
Publication Date:
OSTI Identifier:
21091393
Resource Type:
Journal Article
Resource Relation:
Journal Name: Crystallography Reports; Journal Volume: 52; Journal Issue: 1; Other Information: DOI: 10.1134/S1063774507010075; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALCIUM COMPOUNDS; CATIONS; CRYSTAL STRUCTURE; INFRARED SPECTRA; MINERALS; OXIDES; POTASSIUM COMPOUNDS; SODIUM COMPOUNDS; X-RAY DIFFRACTION; ZIRCONIUM COMPOUNDS

Citation Formats

Zubkova, N. V., E-mail: dmitp@geol.msu.ru, Pekov, I. V., Turchkova, A. G., Pushcharovskii, D. Yu., Merlino, S., Pasero, M., and Chukanov, N. V.. Crystal structures of potassium-exchanged forms of catapleiite and hilairite. United States: N. p., 2007. Web. doi:10.1134/S1063774507010075.
Zubkova, N. V., E-mail: dmitp@geol.msu.ru, Pekov, I. V., Turchkova, A. G., Pushcharovskii, D. Yu., Merlino, S., Pasero, M., & Chukanov, N. V.. Crystal structures of potassium-exchanged forms of catapleiite and hilairite. United States. doi:10.1134/S1063774507010075.
Zubkova, N. V., E-mail: dmitp@geol.msu.ru, Pekov, I. V., Turchkova, A. G., Pushcharovskii, D. Yu., Merlino, S., Pasero, M., and Chukanov, N. V.. Thu . "Crystal structures of potassium-exchanged forms of catapleiite and hilairite". United States. doi:10.1134/S1063774507010075.
@article{osti_21091393,
title = {Crystal structures of potassium-exchanged forms of catapleiite and hilairite},
author = {Zubkova, N. V., E-mail: dmitp@geol.msu.ru and Pekov, I. V. and Turchkova, A. G. and Pushcharovskii, D. Yu. and Merlino, S. and Pasero, M. and Chukanov, N. V.},
abstractNote = {The crystal structures of potassium-exchanged forms of catapleiite and hilairite of the compositions (K{sub 0.49}Ca{sub 0.42}Na{sub 0.26})ZrSi{sub 3}O{sub 9} . 2[(H{sub 2}O){sub 0.8}(H{sub 3}O){sub 0.2}] and K{sub 0.51}ZrSi{sub 3}O{sub 9} . 3[(H{sub 2}O){sub 0.5}K{sub 0.27}(H{sub 3}O){sub 0.23}], respectively, were studied by X-ray diffraction and IR spectroscopy. Both structures retain the heteropolyhedral frameworks of the parent minerals formed by Zr octahedra and Si tetrahedra. The K cations occupy different positions in these minerals. In K-exchanged catapleiite, K cations are located only in the position occupied by Na in the structure of the parent mineral. In the K-exchanged form of hilairite, K cations are not only involved in the Na position but also partially occupy the H{sub 2}O position.},
doi = {10.1134/S1063774507010075},
journal = {Crystallography Reports},
number = 1,
volume = 52,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}