Email this article On the conditions of the formation of cancrisilite Na7(Al5Si7O24)(CO3) · 3H2O and «hydroxycancrinite» Na6(Al6Si6O24) · 4H2O (on the basis of data on synthesis)
- Authors: Chukanov N.V.1,2, Kotel'nikov A.R.3, Pekov I.V.2, Van K.V.3
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Affiliations:
- Institute of Problem of Chemical Physics of the RAS
- Moscow State University
- D.S. Korzhinskii Institute of Experimental Mineralogy of RAS
- Issue: Vol 148, No 5 (2019)
- Pages: 135-144
- Section: ЭКСПЕРИМЕНТАЛЬНАЯ МИНЕРАЛОГИЯ
- URL: https://journals.eco-vector.com/0869-6055/article/view/11975
- DOI: https://doi.org/10.30695/zrmo/2019.1485.08
- ID: 11975
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Abstract
Aluminosilicates with a cancrinite-type structure compositionally related to cancrisilite and a Ca-free and CO3 — deficient cancrinite analogue were synthesized and characterized by electron microprobe and HCN-analyses, IR spectroscopy, and powder X-ray diffraction. The empirical formulae of the compounds obtained are H0.05Na6.13[Al4.36Si7.64O24](CO3)0.91 · 2.85H2O and H0.07Na6.19[Al5.53Si6.47O24]· ·(CO3)0.365 · 3.915H2O, respectively. The latter compound is characterized by disordered chains (···Na···H2O)∞ in the narrow channel and a high content of H2O in the wide channel. The conditions for the formation of cancrisilite and carbonate-deficient cancrinite varieties in nature are discussed. It was concluded that supercritical conditions and ultra-agpitic environment contribute to crystallization of cancrisilite.
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About the authors
Nikita Vladimirovich Chukanov
Institute of Problem of Chemical Physics of the RAS;Moscow State University
Author for correspondence.
Email: nikchukanov@yandex.ru
Doctor of physics and mathematics, chief researcher of the laboratory of kinetics of thermal conversions
Russian Federation, Chernogolovka, Moscow Region;MoscowAleksey Redovich Kotel'nikov
D.S. Korzhinskii Institute of Experimental Mineralogy of RAS
Email: kotelnik@iem.ac.ru
Russian Federation, Chernogolovka, Moscow Region
Igor Viktorovich Pekov
Moscow State University
Email: igorpekov@mail.ru
Russian Federation, Moscow
Konstantin Vladimirovich Van
D.S. Korzhinskii Institute of Experimental Mineralogy of RAS
Email: kvv@iem.ac.ru
Russian Federation, Chernogolovka, Moscow Region
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