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Synthesis of K2SiSi3O9 with silicon in 4- and 6-coordination

  • N. Kinomura (a1), S. Kume (a1) and M. Koizumi (a1)

Summary

Two kinds of vitreous material with composition K2GeSi3O9 and K2Si4O9 were treated under conditions of high temperature and pressure. The X-ray diffraction patterns of the products were similar to that of K2TiSi3O9, which has the wadeite, K2ZrSi3O9, structure.

A natural crystal of K-feldspar was also treated under the same conditions. The product was found to consist of three phases, coesite, kyanite, and the above-mentioned K2Si4O9. Since Zr ions in wadeite are in a 6-coordinated site, one-quarter of Si ions in K2Si4O9 are considered to be in 6-coordination. This is the first silicate in which Si ions occupy sites of 4- and 6-coordinations in one crystal at the same time.

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Cholset, (J.), Deschanvres, (A.), and Raveau, (B.), 1973. Journ. Solid State Chem. 7, 408-17.
Goranson, (R. W.) and Kracek, (F. C.), 1932. Journ. Phys. Chem. 36, 913-26.
Tlenshaw, (D. E.), 1955. Min. Mag. 30, 585-95.
Osugi, (J.), Shimizu, (K.), Inoue, (K.), and Yasunami, (K.), 1964. Rev. Phys. Chem. Japan, 34, 103-8.
Roy, (R.) and Tuxtle, (O. F.), 1956. Physics and Chemistry of the Earth, 1, 143 (ed. Ahrens et al., Pergamon Press, London).
Schweinsberg, (Von H.) and Liebeau, (F.), 1972. Zeit. anorg, allg. Chem. 387, 241-51.
Seki, (Y.) and Kennedy, (G. C.), 1964. Amer. Min. 49, 1688-1706.
[Stishov, (S. M.) and Popova, (S. V.)] CtиШob|(C. M.) и Пoпoba, (C. B.), 1961. гeoxиMия (Geokhimiya), 10, 837-9.
Yanagisawa, (Y.) and Kume, (S.), 1973. Mater. Res. Bull. 8, 1241-6.

Synthesis of K2SiSi3O9 with silicon in 4- and 6-coordination

  • N. Kinomura (a1), S. Kume (a1) and M. Koizumi (a1)

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