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Crystal chemistry of elpidite from Khan Bogdo (Mongolia) and its K- and Rb-exchanged forms

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Abstract

Elpidite Na2ZrSi6O15 · 3H2O [space group Pbcm, a = 7.1312(12), b = 14.6853(12), and c = 14.6349(15) Å] from Khan Bogdo (Mongolia) and its K- and Rb-exchanged forms K1.78Na0.16H0.06ZrSi6O15 · 0.85H2O [Cmce, a = 14.054(3), b = 14.308(3), and c = 14.553(3) Å] and Na1.58Rb0.2H0.22ZrSi6O15 · 2.69H2O [Pbcm, a = 7.1280(10), b = 14.644(3), and c = 14.642(3) Å] that were obtained by cation exchange at 90°C, as well as K1.84Na0.11H0.05ZrSi6O15 · 0.91H2O [Cmce, a = 14.037(3), b = 14.226(3), and c = 14.552(3) Å] and Rb1.78Na0.06H0.16ZrSi6O15 · 0.90H2O [Cmce, a = 14.2999(12), b = 14.4408(15), and c = 14.7690(12) Å], obtained at 150°C are studied by single-crystal X-ray diffraction and IR spectroscopy. The base of the structures is a heteropolyhedral Zr-Si-O framework whose cavities accommodate Na (K, Rb) cations and H2O molecules.

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Authors and Affiliations

  1. Faculty of Geology, Moscow State University, Moscow, 119992, Russia

    A. A. Grigor’eva, N. V. Zubkova, I. V. Pekov, D. Yu. Pushcharovsky & M. F. Vigasina

  2. Department of Mineralogy and Petrography, Museum of Natural History of Vienna, Burgring 7, A-1010, Vienna, Austria

    U. Kolitsch

  3. Institute of Mineralogy and Crystallography, University of Vienna, Althanstr. 14, A-1090, Vienna, Austria

    U. Kolitsch, G. Giester, T. Dordević & E. Tillmanns

  4. Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia

    N. V. Chukanov

Authors
  1. A. A. Grigor’eva
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  2. N. V. Zubkova
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  3. I. V. Pekov
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  4. U. Kolitsch
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  5. D. Yu. Pushcharovsky
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  6. M. F. Vigasina
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  7. G. Giester
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  8. T. Dordević
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  9. E. Tillmanns
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  10. N. V. Chukanov
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Correspondence to N. V. Zubkova.

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Original Russian Text © A.A. Grigor’eva, N.V. Zubkova, I.V. Pekov, U. Kolitsch, D.Yu. Pushcharovsky, M.F. Vigasina, G. Giester, T. Dordević, E. Tillmanns, N.V. Chukanov, 2011, published in Kristallografiya, 2011, Vol. 56, No. 5, pp. 890–899.

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Grigor’eva, A.A., Zubkova, N.V., Pekov, I.V. et al. Crystal chemistry of elpidite from Khan Bogdo (Mongolia) and its K- and Rb-exchanged forms. Crystallogr. Rep. 56, 832–841 (2011). https://doi.org/10.1134/S1063774511050117

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  • DOI: https://doi.org/10.1134/S1063774511050117

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