| EL-AFANDY, Adel H., ABDALLA, Hamdy M., ALY, Mohsen M., AMMAR, Fathy (2000) Geochemistry and Radioactive Potentiality of Um Naggat Apogranite, Central Eastern Desert, Egypt. Resource Geology, 50 (1) 39-51 doi:10.1111/j.1751-3928.2000.tb00054.x | Journal (article/letter/editorial) | Radioactive Potentiality of Um Naggat Apogranite, Central Eastern Desert, Egypt Adel H. EL-AFANDY, Hamdy...Fathy AMMAR Abstract: The northern part of Um Naggat granite massif (UNGM) has suffered extensive post-magmatic...especially the albitized and greisen facies, can be categorized as a mineralized productive granite. (UNGM)...(UNGM) (Fig. 1). Um Naggat apogranite (UNAP) comprises albitized (Na-metasomatized), greisenized (H+metasomatized)...granites. The alteration processes were concluded by a red hematitic and black Mn-oxide alteration occurring | | | Journal (article/letter/editorial) | Granitoids and Associated Rocks, Eastern Desert, Egypt Hamdy M. Abdalla1, Hossam Helba2 and Hiroharu Matsueda3...Alexandria, Egypt, 2Faculty of Science, Alexandria University, Moharem Bek, Alexandria, Egypt, History Museum...Nb-enriched, A1-granite (e.g. Um Hibal); (ii) metaluminous, Nb + Zr + Y-enriched, A2-type alkali granite (e.g....peraluminous, Ta ³ Nb + Sn + Be ± W-enriched, Li-albite granite (e.g. Nuweibi, Igla and Abu Dabbab). The metasomatized...altered alkali feldspar granite (i.e. apogranite; e.g. Um Ara, Abu Rusheid, and Um Naggat). Zircon of peralkaline |
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