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The lattice parameters and interplanar spacings of some artificially prepared melilites

Published online by Cambridge University Press:  14 March 2018

K. W. Andrews
K. W. Andrews*
Affiliation:
Research and Development Department, The United Steel Companies Limited, Stocksbridge, near Sheffield
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Extract

A laboratory investigation in connexion with some blast-furnace slags, led to the preparation of the five synthetic melilites for which X-ray data are provided. The five compounds represent gehlenite, åkermanite and three members of the intermediate series of solid solutions, corresponding to 25, 50, and 75 % of åkermanite.

The binary system gehlenite–åkermanite was studied by Ferguson and Buddington, who established relationships between refractive indices, density, and composition and determined solidus and liquidus curves. The crystal structure of the melilite group of compounds was investigated by Warren, who showed that the structure was based on a tetragonal lattice.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 28 , Issue 202 , September 1948 , pp. 374 - 379
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1948

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References

page 374 note 1 Ferguson, J. B. and Buddington, A. F., The binary system åkermanite-gehlenite. Amer. Journ. Sci., 1920, ser. 4, vol. 50, pp. 131–140. [M.A. 1–167.]CrossRefGoogle Scholar

page 374 note 2 Warren, B. E., The structure of melilite (Ca,Na)2(Mg,Al)l(Si,Al)2O7 . Zeits. Krist., 1930, vol. 74, pp. 131–138. [M.A. 4–367.]Google Scholar

page 374 note 3 Bragg, W. L., Atomic structure of minerals. London, 1937, p. 177. [M.A. 7–7.]Google Scholar