Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-24T06:07:35.090Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthetic Mn-Kilchoanite—a new development in polymorphism of melilite

Published online by Cambridge University Press:  05 July 2018

Mitsuyoshi Kimata
Mitsuyoshi Kimata*
Affiliation:
Institute of Geoscience, the University of Tsukuba, Ibaraki 305, Japan
Get access Rights & Permissions [Opens in a new window]

Abstract

Two compounds with the chemical composition Ca2.32Mn0.68Si2.00O7 were synthesized from a molten carbonating silicate with the melilite composition. The synthetic samples were subsequently characterized by X-ray powder diffraction, IR absorption and EPMA, and they proved to be the anhydrous phases isomorphous with kilchoanite Ca3Si2O7 and åkermanite Ca2MgSi2O7 respectively, and to be polymorphous with each other. Their crystallochemical properties suggest that Mn-åkermanite is a high-temperature structure type of Mn-kilchoanite. Substitution of Mn2+ with an intermediate ionic radius between those of Mg2+ and Ca2+ cations establishes the polymorphic relationship between åkermanite Ca2MgSi2O7 and kilchoanite Ca3Si2O7.

Keywords

kilchoaniteåkermanitemanganese
Type
Mineralogy
Information
Mineralogical Magazine , Volume 50 , Issue 357 , September 1986 , pp. 511 - 515
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Agrell, S.O. (1965) Mineral. Ma. 34, 1-15.Google Scholar
Agrell, S.O. and Gay, P. (1961) Natur. 189, 743.CrossRefGoogle Scholar
Andrew, K.W. (1948) Mineral. Mag. 28, 374-9.Google Scholar
Baker, C.K., and Black, P.M. (1980) Ibid. 43, 797-807.Google Scholar
Black, P.M. (1969) Ibid. 37, 517-19.Google Scholar
Brisi, G, and Abbattista, F. (1961) Atti Acad. Sci. Torin. 95, 263-71.Google Scholar
Buerger, M.J. (1951) Phase transformations in solid. Wiley, New York, pp. 183–209.Google Scholar
Edgar, A.D. (1964) Feldspars and Feldspathoids: Structure, Properties and Occurrence. D. Reidel Publishing Company, Holland, pp. 501-32.Google Scholar
Farmer, V.C. (1974) The infrared spectra of mineral. Mineral. Soc. London, p. 452-3.CrossRefGoogle Scholar
Glasser, F.P. (1962) J. Am. Ceram. Soc. 45, 245-9.CrossRefGoogle Scholar
Hazen, R.M. (1977) Phys. Chem. Minerals. 1, 83-94.CrossRefGoogle Scholar
Henmi, H., Kusachi, I., and Henmi, C. (1975) J. Mineral. Soc. Japan. 12, 205-14.(in Japanese).Google Scholar
Huckenholtz, H.J. (1977) Neues Jahrb. Mineral. Ab. 130, 169-86.Google Scholar
Jack, K.H. (1976) J. Mater. Sci. 11, 1135-58.CrossRefGoogle Scholar
Kimata, M. (1980) Neues Jahrb. Mineral. Abh. 139, 43. 58.Google Scholar
Kimata, M. (1983) Z. Kristallogr. 163, 295-304.Google Scholar
Kimata, M. (1985a) Neues Jahrb. Mineral. Mh.83-96.Google Scholar
Kimata, M. (1985b) Naturwissensch. 72, 372-3.CrossRefGoogle Scholar
Kimata, M. and Ii, N. (1981) Neues Jahrb. Mineral. Mh.pp. 1-10.Google Scholar
Kimata, M. and Ii, N. (1982) Neues Jahrb. Mineral. Abh. 144, 254. 67.Google Scholar
Louisnathan, S.J. (1969) Z. Kristallogr. 130, 427-37.CrossRefGoogle Scholar
Lozac'h, A.M. (1972) C. R. Acad. Sc. Paris, Ser. C 275, 809-12.Google Scholar
Mason, B. (1966) Principles of Geochemistr. 3rd edn. John Wiley & Sons, Inc., New York, p. 78.Google Scholar
Roy, D.M. (1958) Am. Mineral. 43, 1009-28.Google Scholar
Saburi, S., Kusachi, I., Henmi, C, Kawahara, A., Henmi, K., and Kawada, I. (1976) Mineral. J. 8, 240-6.CrossRefGoogle Scholar
Sakurai, T. (1967) RSLC-3, Universal Crystallographic Computation Program System (II) (UNICS. The Crystallogr. Society of Japan.Google Scholar
Shannon, R.D. (1976) Acta Crystallogr. A32, 751-67.CrossRefGoogle Scholar
Smith, D.K., and Johnson, G.G. (1973) A FORTRAN IV program for calculating X-ray powder diffraction patterns—Version 5.Pennsylvania State University, Department of Geosciences.Google Scholar
Suitch, P.R., Lacout, J.L., Hewat, A., and Young, R.A. (1985) Acta Crystallogr. B41, 173-9.CrossRefGoogle Scholar
Sweatman, T.R., and Long, J.Y.P. (1969) J. Petro. 10, 332-79.CrossRefGoogle Scholar
Taylor, H.F.W. (1971) Mineral. Mag. 38, 26-31.CrossRefGoogle Scholar