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The magnesium aluminium borosilicates: kornerupine and grandidierite

Published online by Cambridge University Press:  14 March 2018

Duncan McKie
Duncan McKie*
Affiliation:
Department of Mineralogy and Petrology, Cambridge
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Summary

A new occurrence of kornerupine in the skarn zone at Mautia Hill, Tanganyika, has yielded unit-cell dimensions a 16·100, b 13·767, c 6·735 Å, density 3·297, and composition Na0·01Mn0·01Ti0·02Mg3·69Fe0·37IIIAl6·36Si3·71B0·41O21·75(OH)0·25. The unit-cell clearly contains 88 anions rather than the 86 proposed previously. Grandidierite from Sakatelo, Madagascar, has unit-cell dimensions a 10·978, b 10·335, c 5·760 Å, space group Pna21 or Pnam, density 2·976, and composition Fe0·12IITi0·01Mg0·88Fe0·03IIIAl3·00Si1·00B0·97O9·00. The unit-cell contains 36 anions and the structure appears to involve A106 chains parallel to the c-axis.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 34 , Issue 268 , 1965 , pp. 346 - 357
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1965

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References

De Villiers, (J.E.), 1940. Min. Mug., vol. 25, p. 550.Google Scholar
Girault, (J.P.), 1952. Amer. Min., vol. 37, p. 531.Google Scholar
Gossner, (B.) and Mussgnuo, (F.), 1928. Neues Jahrb. Min., Abt. A. Beil.-Bd. 58, p. 213.Google Scholar
Hey, (M.H.), Anderson, (B.W.), and 1)Ayne, (C.J.), 1941. Min. Mug., vol. 26, p. 119.Google Scholar
Hlawatsch, (K.), 1918. FSldtani Közlöny, Budapest, vol. 48, p. 266.[3[.A. 2-174].Google Scholar
Kelsey, (C.H.), 1964. Min. Mug., vol. 33, p. 809.Google Scholar
Kelsey, (C.H.), and Mckie, (D.), 1964. Ibid. vol. 33, p. 986.Google Scholar
Lacroix, (A.), 1902. Bull. Soc. Frang. Min., vol. 25, p. 85.Google Scholar
Lacroix, (A.), 1922. Min. de Madagascar, vol. 1, p. 393.Google Scholar
Mckie, (D.), 1959. Min. Mag., vol. 32, p. 282.Google Scholar
Mckie, (D.), 1963a. Ibid., vol. 33, p. 563.Google Scholar
Mckie, (D.), 1963b. Ibid., vol. 33, p. 635.Google Scholar
Murthy, (M. V. N.), 1954. Nature, vol. 174, p. 1065.Google Scholar
Uhlig, (J.), 1910. Z. Krist. Min., vol. 47, p. 215.Google Scholar
Vogt, (T.), 1947. Bull. Comm. Géol. Finlande, no. 140, p. 1.Google Scholar