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Chemistry of biotites from a zoned granitic pluton in Morocco

Published online by Cambridge University Press:  05 July 2018

A. Mahmood
A. Mahmood*
Affiliation:
Direction de la Géologie, Ministère de l'energie et des Mines, Rabat, Morocco
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Abstract

Chemical analyses and structural formulae of biotites from the Zaër pluton, a zoned granitic body in the Central Hercynian Massif of Morocco, are presented. The pluton grades from more mafic single-mica granodioritic facies near the margin to more felsic two-mica granitic facies in the central part. There is a relationship between the composition of the biotites and that of the host rocks. Biotite composition in the internal two-mica facies was influenced by a hydrothermal phase.

Type
Research Article
Information
Mineralogical Magazine , Volume 47 , Issue 344 , September 1983 , pp. 365 - 369
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1984

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Footnotes

*

Present address: Department of Geology, Ecole Nationale de l'industrie Minerale, B.P. 753, Agdal-Rabat, Morocco.

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