relation: http://acta.bibl.u-szeged.hu/24757/ title: Geochemistry of biotite and its significance as a guide to the origin of the granitoid rocks of El-Imra area, Eastern Desert, Egypt creator: Salem Abdel-Karim Ahmed creator: Heikal Mohamed A. creator: Kabesh Mahmoud Lofty creator: Salem M. A. subject: 01. Természettudományok subject: 01.05. Föld- és kapcsolódó környezettudományok description: Biotites from the granitoid rocks of El-Imra, Eastern Desert, Egypt have been examined. The chemical data of 8 new analyzed biotites are presented. The behaviour of major and trace elements in the examined biotites are discussed according to different variation diagrams. The chemical composition of biotites has proved a reasonable guide to the magmatic origin of the host granitic rocks. publisher: University of Szeged, Department of Mineralogy, Geochemistry and Petrology date: 1987 type: Cikk, tanulmány, mű type: NonPeerReviewed format: part language: hu identifier: http://acta.bibl.u-szeged.hu/24757/1/mineralogica_029_047-056.pdf identifier: Salem Abdel-Karim Ahmed; Heikal Mohamed A.; Kabesh Mahmoud Lofty; Salem M. A.: Geochemistry of biotite and its significance as a guide to the origin of the granitoid rocks of El-Imra area, Eastern Desert, Egypt. In: Acta mineralogica-petrographica, (29). pp. 47-56. (1987) language: eng