 | | Journal (article/letter/editorial) | | Rare-Metal Granitoids and Associated Rocks, Eastern Desert, Egypt a b Fathy H. Mohamed , Hamdy M. Abdalla...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:...Rare-Metal Granitoids and Associated Rocks, Eastern Desert, Egypt, International Geology Review, 41:10, 932-948...Rare-Metal Granitoids and Associated Rocks, Eastern Desert, Egypt F A T H Y H. MOHAMED, Department of Geology |  | | Journal (article/letter/editorial) | | Overview on the REE-Mineralized Alkaline Granites in Egypt, with Special Reference to the Abu Khruq and Gara...Authority, P.O. Box: 259-C.N. 21111, Alexandria, Egypt [e-mail: Dr_hma_enma@Yahoo.com] Received on March...Abstract: The REE-mineralized alkaline granites in Egypt are divided into the following three classes: (1)...intrude the Phanerozoic rocks of the Southwestern Desert with REE amounting up to 2 % (e.g. Gara El Hamra)...Hamra), and (3) upper Proterozoic, post-orogenic siderophyllite alkali feldspar granite with REE amounting |  | | Journal (article/letter/editorial) | | Metal Granitoids and Associated Rocks, Eastern Desert, Egypt Hamdy M. Abdalla1, Hossam Helba2 and Hiroharu...Alexandria, Egypt, 2Faculty of Science, Alexandria University, Moharem Bek, Alexandria, Egypt, History Museum...K-feldspar, quartz, plagioclase and annite-siderophyllite mica. It is prismatic with length/width ratios...Authority, P. O. Box 259-C. N. 21111, Alexandria, Egypt. Email: dr_hma_ enma@yahoo.com © 2009 The Authors...(unpublished data), rare metal granitoids of the Eastern Desert province can be largely grouped into two main |  | | Journal (article/letter/editorial) | | granitoids and the associated rocks in the Eastern Desert, Egypt Hamdy M. Abdalla*, Hiroharu Matsueda**,...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...apogranites of the albitite type in the Central Eastern Desert of Egypt by a group of Soviet and Egyptian geologists...that is mainly exposed in southern Sinai and Eastern Desert (Fig. 1A), Sn granitoids or stanniferous granitoids |  | 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) | | Potentiality of Um Naggat Apogranite, Central Eastern Desert, Egypt Adel H. EL-AFANDY, Hamdy M. ABDALLA*, Mohsen...Maadi, Cairo, Egypt. * Nuclear Materials Authority, P. O. Box 259-C. N. 21111, Alexandria, Egypt. Keywords:...kaolinization, rare-metals, radioactive potentiality, Egypt. 2. Sampling and Analytical Techniques Petrographical...Radioactive Potentiality of Um Naggat Apogranite, Egypt 1983). The UNGM is an epizonal and unfoliated pluton...high ratio characterizes it as Fe-rich annite-siderophyllite (c.f. Mohamed et al., 1999). Zircon of the |  | | Journal (article/letter/editorial) | | : trioctahedral micas, phlogopite, biotite, siderophyllite, lepidolite, trace elements, statistical analysis...varieties (i.e. phlogopite, Mg biotite, Fe biotite, siderophyllite, protolithionite, zinnwaldite, lepidolite)...varieties (phlogopite, Mg biotite, Fe biotite, siderophyllite, protolithionite, zinnwaldite, lepidolite)...202 369 480 580 237 239 293 396 423 437 5985 Siderophyllite 131 100 127 212 294 98 236 127 291 73 153 85...octahedral Fetot >4, which plot in the elds of siderophyllite or Fe biotite in Figs 1 15. Because <5% of |  | | Journal (article/letter/editorial) | | parts. The emplacement of granite stocks in the eastern part of the Krušné Hory Mts. was accompanied by...(thickness about 640 m) and a lower zone of lithian-siderophyllite-bearing granite to the depth 1,596 m (Štemprok...representative samples from zinnwaldite- and lithian-siderophyllite-bearing rare-metal granites of the Cínovec... potassium feldspar, lithium mica (lithian-siderophyllite) and topaz. Fluorapatite, zircon, Nb-Ta-Ti...albite (An5-10), potassium feldspar and lithian siderophyllite. Topaz, zircon, xenotime-(Y), thorite, synchysite-(Y) |  | | Journal (article/letter/editorial) | | Geology, Faculty of Science, Cairo University, Egypt Department of Geosciences, Swedish Museum of Natural...Arabian-Nubian Shield (ANS), which covers parts of Egypt, Eritrea, Ethiopia, Saudi Arabia, Somalia, Sudan...composite terranes and older continental fragments of Eastern Gondwana (Stern et al., 2004), perhaps another...Saudi Arabia (Khida terrane), Yemen, and Egypt (Eastern Desert and Sinai) (Fig. 1a) incorporated Paleoproterozoic...Halfa terrane (Abdelsalam et al., 2002) and Bayuda Desert (Küster et al., 2008) in Sudan (Fig. 1). More direct |  | Sami, Mabrouk, Ntaflos, Theodoros, Farahat, Esam S., Mohamed, Haroun A., Ahmed, Awaad F., Hauzenberger, Christoph (2017) Mineralogical, geochemical and Sr-Nd isotopes characteristics of fluorite-bearing granites in the Northern Arabian-Nubian Shield, Egypt: Constraints on petrogenesis and evolution of their associated rare metal mineralization. Ore Geology Reviews, 88. 1-22 doi:10.1016/j.oregeorev.2017.04.015 | Journal (article/letter/editorial) | | granites in the Northern Arabian-Nubian Shield, Egypt: Constraints on petrogenesis and evolution of their...granites in the Northern ArabianNubian Shield, Egypt: Constraints on petrogenesis and evolution of their...granites in the Northern Arabian-Nubian Shield, Egypt: Constraints on petrogenesis and evolution of their...of Science, Minia University, El-Minia 61519, Egypt c Institute of Mineralogy and Petrology, Karl-Franzens...Graz, Austria Abstract The Central Eastern Desert (CED) of Egypt, a part of Neoproterozoic Arabian Nubian |  | | Journal (article/letter/editorial) | | Columbite-tantalite-bearing granitoids of the Eastern Desert province of Egypt can be categorized into: (i) metaluminous...required for stabilizing the associated Li-siderophyllite or zinnwaldite. Columbites of the apogranites |  | RASLAN, Mohamed F., EL-SHALL, Hassan E., OMAR, Sayed A., DAHER, Ahmed M. (2010) Mineralogy of polymetallic mineralized pegmatite of Ras Baroud granite, Central Eastern Desert, Egypt. Journal of Mineralogical and Petrological Sciences, 105 (3) 123-134 doi:10.2465/jmps.090201 | Journal (article/letter/editorial) | | pegmatite of Ras Baroud granite, Central Eastern Desert, Egypt Mohamed F. Raslan*, Hassan E. El-Shall**...Materials Authority P.O. Box, 530, El Maadi, Cairo, Egypt ** University of Florida, Gainesville, FL, 32611...Baroud younger granitic pluton, Central Eastern Desert of Egypt. These pegmatite bodies are of variable...inclusions, Ras Baroud granitic pegmatite, Eastern Desert, Egypt - INTRODUCTION According to Cerny’s (1990)...metaluminous to mildy peraluminous with annite siderophyllite mica as a sole mafic mineral (Abdalla and El |  | | Journal (article/letter/editorial) | | epidote-bearing TTG suite, Mons Claudianus batholith (Egypt) and implications for synorogenic magmatism ABDEL-FATTAH...epidote-bearing Mons Claudianus Batholith (MCB), Egypt, consists of tonalitetrondhjemite-granodiorite (TTG)...Al-in-Hb barometer, subsolvus magma, Nubian Shield, Egypt. Introduction PHYSIOCHEMICAL processes and crystallization...Mons Claudianus batholith (MCB), exposed in eastern Egypt (Fig. 1). The Nubian Shield was separated from...Mons Claudianus batholith (MCB) located in eastern Egypt. The map is modified from Zalata (1972) and |  | | Journal (article/letter/editorial) | | Wadi Haimur –Abu Swayel gneiss belt, south Eastern Desert, Egypt: petrological and geochronological constraints...Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt Institut für Geologie und Paläntologie, Uni6ersität...rights reserved. Keywords: Gneiss; Abu Swayel; Egypt; Back-arc basin; Geothermobarometer; Age dating...the Precambrian rocks of Egypt. The main occurrences in the Eastern Desert are, from north to south (Fig...Schematic tectonic sketch map of the southern part of Egypt and the northern part of Sudan showing the main |  | | Journal (article/letter/editorial) | | dominant solid-solution series (phlogopite–annite, siderophyllite polylithionite and muscovite celadonite). Their...between micas of the phlogopite–annite and siderophyllite–polylithionite series (VIAl = 0.5) results...celadonite, muscovite, phlogopite, polylithionite, siderophyllite, tainiolite]; (2) uncommon true K micas (1...Mg#] phlogopite: Mg# >0.5 annite: Mg# <0.5 (2) Siderophyllite polylithionite series trioctahedral (VIR >2...according to the ratio Fe tot / (Fetot+Li) [= Fe#] siderophyllite: Fe# >0.5 polylithionite: Fe# <0.5 (3) Tainiolite |  | | Journal (article/letter/editorial) | | phl= phlogopite, prot = protolithionite, sid = siderophyllite, zinw = zinnwaldite. FIG. 1. Variation of...composition of these micas which belong to the annite-siderophyllite series (e.g. Kinnaird et al., 1992; Abdel-Rahman...biotite, siderophyllite, lepidomelane) and possibly associated Li-Fe micas (Li-bearing siderophyllite and...Li-Fe micas (protolithionite, Li68 bearing siderophyllite). Equations 3 and 4 converge for Li20 at MgO...albite-enriched granitoids at Um Ara, Southeastern Desert, Egypt. int. Geol. Rev., 36, 1067-77. Abdel-Rahman |  | | Journal (article/letter/editorial) | | Characterization of Beryl-Bearing Granitoids, Eastern Desert, Egypt: Metallogenic and Exploration Constraints...Abdalla Nuclear Materials Authority, Alexandria, Egypt Abstract Mineral chemistry and geochemical characteristics...characteristics of beryl-bearing granitoids in Eastern Desert of Egypt, were examined in order to identify the...that is mainly exposed in southern Sinai and Eastern Desert (Fig. 1; Table 1), Be-granitoids (where Be...Authority, PO Box 259-C. N. 21111, Alexandria, Egypt. Email: dr_hma_enma@yahoo.com © 2009 The Author |  | | Journal (article/letter/editorial) | | followed by fluorine-enriched albite-topazlithian siderophyllite granites (0.5–1.0 wt.% F, 0.2–0.4 wt.% P2O5;...chemical composition between lithian-annite (or siderophyllite) and zinnwaldite, traditionally called protolithionite...mica corresponding to annite (<0.5% Li2O), Li-siderophyllite (0.5–1% Li2O), protolithionite (2% Li2O) and...Li-poor greisens composed of quartz, topaz, siderophyllite, and abundant apatite with accessory cassiterite...seems to be more complex. Granites in the Eastern Desert, Egypt, showed that Mn-rich columbite occurs in |  | | Journal (article/letter/editorial) | | Kingdom, Czech Republic, Germany, France, Lothringia, Egypt, Nigeria and United States of America). The ages...deposits is the occurrence of Falémé (Sénégal). Egypt: The rock samples (11) are exclusively from the...iron ore deposit of Umm Nar, Wadi Mubarak, Eastern Desert. Sims & James (1984) classified the occurrence...Nigeria I; Rana, Norway II and III; Wadi Mubarak, Egypt IV and V; Desna Group, Czech Republic (Svagrov VI;...garnet in weight %, atom % and mol %. Wadi Mubarak, Egypt I, VI and VII; Bong Peak, Liberia II; Harare Kopje |  | | Journal (article/letter/editorial) | | K-feldspar (40–45 vol%), plagioclase (20–25 vol%), siderophyllite (2–8 vol%) and minor biotite (0–4 vol%) (Fig...fluorite (Fig. 3H). The subhedral to anhedral siderophyllite flakes mostly occur interstitially between K-feldspar...leptynites, schists and meta-volcanics exposed in the eastern part of the Cathaysia Block (Shen et al., 2016;...China, including the whole Cathaysia Block and the eastern part of the Yangtze Block with a total outcrop...granites (Supplementary Table 4). Besides, siderophyllite in the high-silica granites has high Si, Al |  | | Journal (article/letter/editorial) | | study from the southern tip of Sinai Peninsula, Egypt A. E. S. Khalil, M. A. Obeid, M. K. Azer & P. D...study from the southern tip of Sinai Peninsula, Egypt, International Geology Review, DOI: 10.1080/00206814...study from the southern tip of Sinai Peninsula, Egypt A. E. S. Khalila, M. A. Obeidb, M. K. Azera,c and...Centre, Cairo, Egypt; bGeology Department, Faculty of Science, Fayoum University, Fayoum, Egypt; cDivision...Science, Fayoum University, P.O.Box 63514, Fayoum, Egypt The supplemental data for this article can be accessed |  | | Journal (article/letter/editorial) | | 1 XMg XSid ); XSid is mole fraction of siderophyllite (XSid ¼ ½f3 Si=Alg=1:75 f1XMg g); XFe and...(aph ), mole fractions of phlogopite (XMg ), siderophyllite (XSid ), and annite (Xann ), fluorine [IV(F)]...differentiates in the A-type granite pluton of Suzhou (eastern China): the key role of fluorine. Journal of Petrology...Composition of micas in peraluminous granitoids of the eastern Arabian Shield. Contribution to Mineralogy and...rare-metal granitoids and associated rocks, eastern Desert, Egypt. International Geology Review 41 (10), 932–948 |  | | Journal (article/letter/editorial) | | (structural model of zinnwaldite—Li-mica from siderophyllite-polylithionite series—was used), mica** (structural...classified as zinnwaldite (Li mica belonging to the siderophyllite and polylithionite series). Despite the variable...strongly peraluminous leucogranites, South Eastern Desert, Egypt–petrogenesis and geodynamic significance...Zhang, R. Highly fractionated leucogranites in the eastern Himalayan Cuonadong dome and related magmatic Be–Nb–Ta |  | | Journal (article/letter/editorial) | | Upper-Cretaceous carbonateflysch rocks in northern and eastern parts, has an adjacent skarn zone. The second intrusive...The dioritic dikes of DK 3 are exposed mostly in eastern part of the Sungun Porphyry stock and cut this...hydroxyl site of biotite. The mole fractions of siderophyllite ( ) and annite ( ) in biotite were...endmembers: eastonite [KMg2AlAl2Si2O10(OH)2] and siderophyllite [KFe2+AlAl2Si2O10(OH)2] (Fig. 8a). The geochemical...fractions of the phlogopite component (XMg), siderophyllite (XSid), and annite (XAn) of the biotite from |  | | Journal (article/letter/editorial) | | within ongonite from the Ary-Bulak massif of eastern Transbaikalia, Russia (Agangi et al., 2014); (C)...Likewise, in an ongonite from the Ary-Bulak massif, eastern Transbaikalia, Russia, topaz Jo phenocrysts have... from, Nuweibi albite granite complex, Eastern Desert, Egypt (Helba et al., 1997); Kwandonkaya granite...2013); IV- Ongonite from the Ary-Bulak massif, eastern Transbaikalia, Russia (Agangi et al., 2014); V-...V- Nuweibi albite granite complex, Eastern Desert, Egypt (Helba et al., 1997). The arrow shows the range |  | Sherafat, Shahrzad, Yavuz, Fuat, Noorbehesht, Iraj, Yıldırım, Demet Kıran (2012) Mineral chemistry of Plio-Quaternary subvolcanic rocks, southwest Yazd Province, Iran. International Geology Review, 54 (13) 1497-1531 doi:10.1080/00206814.2011.644748 | Journal (article/letter/editorial) | | (mean = 885 ± 12), respectively. In the annite–siderophyllite–phlogopite–eastonite quadrilateral, biotite...Palaeozoic and Mesozoic units and crop out in the eastern part of the study area (Zarasvandi et al. 2004...O (≥ 56%) (≥3.5%) Eastern Pontides Yes Yes Mostly (Turkey)7 Mostly Yes Yes Eastern Pontides (Turkey)8...Mostly Tampakan (Philippines)1 No Yes Few Luzong (eastern China)1 Yes Mostly Few Dexing (southern China)1...8B). The annite [KFe2+ 3 AlSi3 O10 (OH)2 ]–siderophyllite [KMg3 AlSi3 [KFe2+ 2 AlAl2 Si2 O10 (OH)2 ]–phlogopite |
|
