 | Abdalla, Hamdy, Matsueda, Hiroharu, Ishihara, Shunso, Miura, Hiroyuki (1994) Mineral Chemistry of Albite-Enriched Granitoids at Um Ara, Southeastern Desert, Egypt. International Geology Review, 36 (11) 1067-1077 doi:10.1080/00206819409465505 | Journal (article/letter/editorial) | | of Albite-Enriched Granitoids at Um Ara, Southeastern Desert, Egypt a a a Hamdy Abdalla , Hiroharu...of Albite-Enriched Granitoids at Um Ara, Southeastern Desert, Egypt, International Geology Review, 36:11...of Albite-Enriched Granitoids at Um Ara, Southeastern Desert, Egypt HAMDY ABDALLA, HIROHARU MATSUEDA...association of manganocolumbite, Nb-MnZn-rich ilmenite (with 1.2 to 14.5 wt% ZnO), spessartine garnet...muscovite also are lies in the Southeastern Desert of Egypt was observed. Sphene, magnetite, apatite, and zirfound |  | | Journal (article/letter/editorial) | | uranium and thorium minerals, Um Ara granites, south Eastern Desert, Egypt Hamdy H. Abd El-Naby Nuclear...Materials Authority, P.O. 530 El-Maadi, Cairo, Egypt a r t i c l e i n f o Article history: Received...2009 Available online 1 March 2009 Keywords: Egypt Um Ara U-rich thorite Thorite Zircon Uranophane Alteration...Alteration a b s t r a c t The Um Ara area, in the south Eastern Desert of Egypt contains a number of uranium...thorium-bearing minerals found in mineralized zones of the Um Ara alkali-feldspar granites; uranophane is the most |  | Moussa, Ewais M.M., Stern, Robert J., Manton, William I., Ali, Kamal A. (2008) SHRIMP zircon dating and Sm/Nd isotopic investigations of Neoproterozoic granitoids, Eastern Desert, Egypt. Precambrian Research, 160 (3) 341-356 doi:10.1016/j.precamres.2007.08.006 | Journal (article/letter/editorial) | | investigations of Neoproterozoic granitoids, Eastern Desert, Egypt Ewais M.M. Moussa a,∗ , Robert J. Stern b , William...Materials Authority, P.O. Box 530, El Maadi, Kattamyia, Egypt Geosciences Department, University of Texas at Dallas...Arabian–Nubian Shield; Granite; Egypt 1. Introduction Neoproterozoic basement in Egypt outcrops over ∼100,000...Simplified geologic map of the Eastern Desert of Egypt showing study areas, modified after Stern and Hedge...older granitoids; Al Missikat younger granite and Um Ara younger granite (Fig. 1). 27 26 25 24 23 22 21 |  | 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...ALY and Fathy AMMAR Abstract: The northern part of Um Naggat granite massif (UNGM) has suffered extensive...mineralized productive granite. (UNGM) (Fig. 1). Um Naggat apogranite (UNAP) comprises albitized (Na-metasomatized)...granites. The alteration processes were concluded by a red hematitic and black Mn-oxide alteration occurring...600 m wide is traced along the northern contact of Um Naggat granite massif Received on October 15, 1999; |  | | Journal (article/letter/editorial) | | Granitoids and Associated Rocks, Eastern Desert, Egypt a b Fathy H. Mohamed , Hamdy M. Abdalla & Hossam...Alexandria, Egypt b Nuclear Materials Authority , P. O. Box 259, C. N., Alexandria, 21111, Egypt c Department...Alexandria University , Moharem Bek, Alexandria, Egypt Published online: 06 Jul 2010. To cite this article:...Granitoids and Associated Rocks, Eastern Desert, Egypt, International Geology Review, 41:10, 932-948, DOI:...Granitoids and Associated Rocks, Eastern Desert, Egypt F A T H Y H. MOHAMED, Department of Geology, Alexandria |  | | Journal (article/letter/editorial) | | and the associated rocks in the Eastern Desert, Egypt Hamdy M. Abdalla*, Hiroharu Matsueda**, Mohamed...Authority, P.O. Box 259, C.N. 21111, Alexandria, Egypt Natural History Museum, Hokkaido University, Sapporo...Japan *** Faculty of science, El Fayoum University, Egypt ** - The study of chemical zoning, color and...albitite type in the Central Eastern Desert of Egypt by a group of Soviet and Egyptian geologists (e...Cassiterite-bearing granitoids, Eastern Desert, Egypt. (B) Geological Map of Abu Dabbab lithium-albite |  | | 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...(i) peralkaline, Zr + Nb-enriched, A1-granite (e.g. Um Hibal); (ii) metaluminous, Nb + Zr + Y-enriched,...feldspar granite (i.e. apogranite; e.g. Um Ara, Abu Rusheid, and Um Naggat). Zircon of peralkaline granite...Authority, P. O. Box 259-C. N. 21111, Alexandria, Egypt. Email: dr_hma_ enma@yahoo.com © 2009 The Authors |  | Azer, Mokhles K., Gahlan, Hisham A., Asimow, Paul D., Al-Kahtany, Khaled M. (2019) The common origin and alteration history of the hypabyssal and volcanic phases of the Wadi Tarr albitite complex, southern Sinai, Egypt. Lithos, 324. 821-841 doi:10.1016/j.lithos.2018.12.015 | Journal (article/letter/editorial) | | the Wadi Tarr Albitite complex, southern Sinai, Egypt Mokhles K. Azer, Hisham A. Gahlan, Paul D. Asimow...the Wadi Tarr Albitite complex, southern Sinai, Egypt. Lithos (2018), https://doi.org/10.1016/j.lithos...the Wadi Tarr Albitite Complex, southern Sinai, Egypt Mokhles K. Azer1*, Hisham A. Gahlan2,3, Paul D....Sciences Department, National Research Centre, Cairo, Egypt 2 Department of Geology and Geophysics, King Saud...Geology Department, Assiut University, Assiut 71516, Egypt 4 Division of Geological & Planetary Sciences |  | | Journal (article/letter/editorial) | | Characterization of Beryl-Bearing Granitoids, Eastern Desert, Egypt: Metallogenic and Exploration Constraints rge_085...Abdalla Nuclear Materials Authority, Alexandria, Egypt Abstract Mineral chemistry and geochemical characteristics...of beryl-bearing granitoids in Eastern Desert of Egypt, were examined in order to identify the metallogenetic...Authority, PO Box 259-C. N. 21111, Alexandria, Egypt. Email: dr_hma_enma@yahoo.com © 2009 The Author...investigated beryl-bearing granitoids, Eastern Desert Egypt. 1, Abu Dabbab; 2, Nuweibi; 3, Homr Mikpid; 4, Homr |  | | Journal (article/letter/editorial) | | case study from the Homrit Waggat area of the Eastern Desert of Egypt Mokhles K. Azer1 | Khaled M. Abdelfadil2...Centre, Cairo, Egypt 2 Geology Department, Faculty of Science, Sohag University, Sohag, Egypt 3 Division... National Research Centre, 12622‐Dokki, Cairo, Egypt. Email: mokhles72@yahoo.com; mk.abdel‐ malak@nrc...granitoids of the Homrit Waggat area in the central Eastern Desert of Egypt reveal two magmatic phases. The...Frost, 2006). The northern The basement rocks of Egypt form the western half of the northern- exposures |  | Brigatti, M. F., Mottana, A., Malferrari, D., Cibin, G. (2007) Crystal structure and chemical composition of Li-, Fe-, and Mn-rich micas. American Mineralogist, 92 (8) 1395-1400 doi:10.2138/am.2007.2497 | Journal (article/letter/editorial) | | microcline (K,Al), albite (Na), spessartine (Mn), ilmenite (Fe,Ti), clinopyroxene (Si,Ca), olivine (Mg),...τT1 (°) τT11 (°) Tetrahedral basal area T1 (Å2) Tetrahedral basal area T11 (Å2) Octahedral parameters ψM1...than the ideal 109.47° value. The tetrahedral basal area is greater for T11 (varying from 3.053 to 3.089...trends can also be deÞned for the octahedral hexagon area, deÞned by tetrahedral apical oxygen atoms (Fig...(Fig. 2a), and for the tetrahedral hexagon area, deÞned by basal tetrahedral oxygen atoms (Fig. 2b). Alternatively |
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