Abstract
The characteristic features of the crystal structures of alkali calcium silicates from various deposits are considered. The structures of these minerals, which were established by single-crystal X-ray diffraction methods, are described as the combinations of large construction modules, including the alternating layers of alkali cations and tubular silicate radicals (in canasite, frankamenite, miserite, and agrellite) and bent ribbons linked through hydrogen bonds in the layers (in tinaksite and tokkoite). The incorporation of impurities and the different ways of ordering them have different effects on the structures of these minerals and give rise to the formation of superstructures accompanied by a change of the space group (frankamenite-canasite), leading, in turn, to different mutual arrangements of the layers of silicate tubes and the formation of pseudopolytypes (agrellites), structure deformation, and changes in the unit-cell parameters (tinaksite-tokkoite).
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References
I. V. Rozhdestvenskaya, L. V. Nikishova, and K. A. Lazebnik, Miner. Mag. 60, 897 (1996).
I. V. Rozhdestvenskaya, L. V. Nikishova, I. I. Bannova, and Yu. D. Lazebnik, Mineral. Zh. 10(4), 31 (1988).
J. D. Scott, Can. Mineral. 14, 515 (1976).
I. V. Rozhdestvenskaya, L. V. Nikishova, I. I. Bannova, and M. D. Evdokimov, in Proceedings of the III National Conference on Application of X-ray and Synchroton Radiations, Neutrons and Electrons for Materials Research, Moscow, 2001, p. 136.
S. Ghose and Ch. Wan, Am. Mineral. 64, 563 (1979).
I. V. Rozhdestvenskaya and L. V. Nikishova, Kristallografiya 43(4), 637 (1998) [Crystallogr. Rep. 43, 589 (1998)].
I. V. Rozhdestvenskaya, L. V. Nikishova, Yu. D. Lazebnik, and K. A. Lazebnik, Z. Kristallogr. 189, 195 (1989).
I. V. Rozhdestvenskaya, L. V. Nikishova, and K. A. Lazebnik, Mineral. Zh. 13(4), 3 (1991).
L. V. Nikishova, K. A. Lazebnik, and Yu. D. Lazebnik, in Crystal Chemistry and Structural Typomorphism of Minerals (Nauka, Leningrad, 1985), p. 100.
A. A. Konev, E. I. Vorob’ev, and K. A. Lazebnik, Mineralogy of Murunskii Alkaline Massif (Sib. Otd. Ross. Akad. Nauk, Nauchno-Izd. Tsentr Ob”edin. Inst. Geologii, Geofiziki Mineralogii, Novosibirsk, 1996).
B. B. Zvyagin, Kristallografiya 38(1), 98 (1993) [Crystallogr. Rep. 38, 54 (1993)].
J. Ferraris, Polysomatism as an Instrument for Establishment of Relation between the Properties and Structure of Crystals, Ed. by O. E. Gorchakova (VINITI, Moscow, 1999).
N. V. Belov, Essais on Structural Mineralogy (Nedra, Moscow, 1976).
Yu. A. Pyatenko, Kristallografiya 17(4), 773 (1972) [Sov. Phys. Crystallogr. 17, 677 (1972)].
Minerals: Handbook, Ed. by F. V. Chukhrov (Nauka, Moscow, 1981), Vol. 3, issue 3.
A. Guinier, G. B. Bokij, K. Boll-Dornberger, et al., Acta Crystallogr., Sect. A: Found. Crystallogr. 40(4), 399 (1984).
I. V. Rozhdestvenskaya, L. V. Nikishova, and K. A. Lazebnik, Zap. Vseross. Mineral. O-va. 127(1), 89 (1998).
K. A. Lazebnik, L. V. Nikishova, and Yu. D. Lazebnik, Mineral. Zh. 8, 85 (1986).
G. Bissert, Acta Crystallogr., Sect. B: Struct. Crystallogr. Cryst. Chem. 36, 259 (1980).
A. A. Petrunina, V. V. Ilyukhin, and N. V. Belov, in Constitution and Properties of Minerals (Naukova Dumka, Kiev, 1973), Vol. 7, p. 10.
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Translated from Kristallografiya, Vol. 47, No. 4, 2002, pp. 602–611.
Original Russian Text Copyright © 2002 by Rozhdestvenskaya, Nikishova.
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Rozhdestvenskaya, I.V., Nikishova, L.V. Crystallochemical characteristics of alkali calcium silicates from charoitites. Crystallogr. Rep. 47, 545–554 (2002). https://doi.org/10.1134/1.1496051
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DOI: https://doi.org/10.1134/1.1496051