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Volume :5 Issue : 1 1978      Add To Cart                                                                    Download

Petrographic studies of Ras Barud granitic rocks, Safaga District, Eastern Desert, Egypt

Auther : ADEL M. REFAAT, MAHMOUD L. KABESH AND ZEINAB M. ABDALLAH

Teachers Institute of Education, El-Odylia. Kuwait; Earth Sciences Laboratory, National

Research Centre, Dokki, Cairo; Teachers Institute of Education, El-Shamia, Kuwait

 

ABSTRACT

 

The examined granitic batholith consists mainly of red, pink, buff, greyish-white and white granites in addition to adamellites, grey granodiorites and quartz diorites. Under the microscope, the investigated granitic rocks show 45 petrographic varieties. Myrmekite intergrowths are studied in these granitic rocks including normal and intergranular myrmekitic textures. These intergrowths are formed due to the action of exsolutions, replacements and metasomatic processes in addition to the simultaneous crystallization which took place between quartz and feldspar minerals. The classification of these granitic rocks was attempted on the basis of modal analyses and was found to agree to a great extent with the field and petrographic classification.

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