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Tricalcium disilicate (rankinite), a new mineral from Scawt Hill, Co. Antrim (With Plate V)

Published online by Cambridge University Press:  14 March 2018

C. E. Tilley
C. E. Tilley*
Affiliation:
Department of Mineralogy and Petrology, University of Cambridge
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Extract

Tricalcium disilicate, first described by Shepherd, Rankin, and Wright in their investigations on the lime–silica and lime–alumina–silica systems has since been reported as a constituent of technical slags. An account has also been given of its occurrence as a reaction product in a glass furnace.

In the ternary system CaO–Al2O3–SiO2 the compound forms with pseudowollastonite–gehlenite and larnite–gehlenite two three-phase equilibrium assemblages, associations which are in part recorded in the technical products.

G. V. Wilson recorded the disilicate together with wollastonite and melilite in reconstituted limestone fragments enclosed in glass, while S. G. Gordon has described and presented an analysis of a slag composed of pseudowollastonite and the 3:2-compound approaching in composition that of the binary eutectic in the synthetic system.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 26 , Issue 176 , March 1942 , pp. 190 - 196
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1942

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References

page 190 note 1 Shepherd, E. S. and Rankin, G. A., Journ. Indust. Eng. Chem., 1911, vol. 3, p. 211.CrossRefGoogle Scholar Rankin, G. A. and Wright, F. E., Amer. Journ. Sci., 1915, ser. 4, vol. 39, p. 1. [M.A. 1–320.]CrossRefGoogle Scholar

page 190 note 2 Gordon, S. G., Amer. Min., 1923, vol. 8, p. 110.Google Scholar

page 190 note 3 Wilson, G. V., Trans. Soc. Glass Techn., 1918, vol. 2, pp. 181, 196.Google Scholar

page 191 note 1 The former Carnforth ironworks manufactured pig iron from Furness haematite (chief gangue mineral, quartz), and Durham coke and local limestone were used in smelting.

page 192 note 1 Amer. Inst. Min. Met. Eng. Technical Pub., 1927, no. 19.

page 193 note 1 Journ. Research Nat. Bur. Standards (Washington), 1938, vol. 21, pp. 628–629 [M.A. 7–283.]