 | | Journal (article/letter/editorial) | | from three CuāNiāPGE prospects, Eastern Desert, Egypt Hassan M. Helmy* Geology Department, Faculty of...of Science, Minia University, 61111-Minia, Egypt Received 21 April 2004; accepted 11 April 2005 Available...prospects in the Eastern Desert of Egypt: Gabbro Akarem, Genina Gharbia and Abu Swayel. The prospects are...and post-magmatic hydrothermal processes. At Genina Gharbia, ore forms either disseminations in peridotite...Tellurides; Solid solution; CuāNiāPGE prospects; Egypt * Fax: +20 086 342601. E-mail address: hmhelmy@yahoo |  | | Journal (article/letter/editorial) | | MINERALIZATION IN THE GENINA GHARBIA MAFICāULTRAMAFIC INTRUSION, EASTERN DESERT, EGYPT HASSAN M. HELMYĀ§ Department...Geology, Minia University, 61111-Minia, Egypt ABSTRACT The Genina Gharbia intrusion is a small late Precambrian...maficāultramafic complex in the Eastern Desert of Egypt. It comprises harzburgite, lherzolite, pyroxenite...or massive patches in gabbro and consists of pyrrhotite >> pentlandite = chalcopyrite >> pyrite = violarite...mineralogical and chemical characteristics of the Genina Gharbia mineralization are best explained by a three-stage |  | Ahmed, Ahmed Hassan, Helmy, Hassan Mohamed, Arai, Shoji, Yoshikawa, Masako (2008) Magmatic unmixing in spinel from late Precambrian concentrically-zoned maficāultramafic intrusions, Eastern Desert, Egypt. Lithos, 104 (1) 85-98 doi:10.1016/j.lithos.2007.11.009 | Journal (article/letter/editorial) | | concentrically-zoned maficāultramafic intrusions, Eastern Desert, Egypt Ahmed Hassan Ahmed a , Hassan Mohamed Helmy b,ā... Faculty of Science, Helwan University, Cairo, Egypt b Institute of Geothermal Sciences, Kyoto University...from the Eastern Desert of Egypt. These complexes; Gabbro Akarem, Genina Gharbia and Abu Hamamid are Precambrian...Re-equilibration; Alaskan-type; Maficāultramafic; Egypt 1. Introduction Spinels are important accessory...maficāultramafic complexes from the Eastern Desert of Egypt (Fig. 1). The general characteristics of these complexes |  | Khedr, Mohamed Zaki, El-Awady, Amr, Arai, Shoji, Hauzenberger, Christoph, Tamura, Akihiro, Stern, Robert J., Morishita, Tomoaki (2020) Petrogenesis of the ~740 Korab Kansi mafic-ultramafic intrusion, South Eastern Desert of Egypt: Evidence of Ti-rich ferropicritic magmatism. Gondwana Research, 82. 48-72 doi:10.1016/j.gr.2019.12.013 | Journal (article/letter/editorial) | | mafic-ultramafic intrusion, South Eastern Desert of Egypt: Evidence of Ti-rich ferropicritic magmatism Mohamed...mafic-ultramafic intrusion, South Eastern Desert of Egypt: Evidence of Ti-rich ferropicritic magmatism, Gondwana...mafic-ultramafic intrusion, South Eastern Desert of Egypt: Evidence of Ti-rich ferropicritic magmatism Mohamed...Kafrelsheikh, Egypt Geology Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt 3 Department...km2) intrusions in the Southern Eastern Desert of Egypt. The intrusion consists of Fe-Ti-bearing dunite |  | Helmy, Hassan M., Ballhaus, Chris, Berndt, Jasper, Bockrath, Cornelia, Wohlgemuth-Ueberwasser, Cora (2007) Formation of Pt, Pd and Ni tellurides: experiments in sulfideātelluride systems. Contributions to Mineralogy and Petrology, 153 (5) 577-591 doi:10.1007/s00410-006-0163-7 | Journal (article/letter/editorial) | | Faculty of Science, El-Minia University, El-Minia, Egypt C. Ballhaus (&) Mineralogisches Institut und Museum...products of monosulfide solid solution (mss), i.e. pyrrhotite, pentlandite, and chalcopyrite (Garuti and Rinaldi...tellurides deemed magmatic occur with sulfides like pyrrhotite, pentlandite, chalcopyrite, and pyrite, which...1986; Naldrett 2004; Etschmann et al. 2004). Pyrrhotite in so-called magmatic sulfide ore is essentially...(typically ~0.2 wt%), and although the Ni content in pyrrhotite in equilibrium with pentlandite was never calibrated |  | | Journal (article/letter/editorial) | | Aberra Mogessie Gabbro Akarem, Eastern Desert, Egypt: CuĀ±NiĀ±PGE mineralization in a concentrically zoned...pipes) where net-textured and massive sulfides (pyrrhotite, pentlandite, chalcopyrite) are found in association...distinct textural positions: (1) as inclusions in pyrrhotite, pentlandite, and rarely chalcopyrite and (2)...Faculty of Science, Minia University, 61111-Minia, Egypt e-mail: rumenia@rusys.eg.net; Fax: +20-86-342601...geochemical survey project in the South Eastern Desert of Egypt (Bugrov and Shalaby 1973). Disseminated and massive |  | | Journal (article/letter/editorial) | | exsolve base-metal sulļ¬de (BMS) minerals such as pyrrhotite, pentlandite, chalcopyrite, and cubanite. During...Helmy (2005) in his study of deposits in eastern Egypt. A weaker trend can be observed along the PdTe2āPtTe2...both layers have fundamentally similar classic pyrrhotite-pentlandite-chalcopyrite structures due to fractionation...Chalcopyrite-pentlandite lamellae and veins in pyrrhotite. (e) Chalcopyritepentlandite lamellae and ilmenite...differentiated (Fig. 3a). The predominant phase is pyrrhotite, which is located in the bottom of the bleb. |  | Barkov, Andrei Y., Shvedov, Gennadiy I., Flemming, Roberta L., VymazalovĆ”, Anna, Martin, Robert F. (2017) Melonite from Kingash and Kuskanak, Eastern Sayans, Russia, and the extent of Bi-for-Te substitution in melonite and synthetic Ni(Te,Bi)2āx. Mineralogical Magazine, 81 (3) 695-705 doi:10.1180/minmag.2016.080.119 | Journal (article/letter/editorial) | | reported occurrences of melonite are shown by the red symbol. light of overall variations gathered in...51ā4.62Ni4.29ā4.45Co0ā0.08)Ī£8.96ā8.99S8.03], pyrrhotite [po; Fe0.89S], a calcic amphibole [amp; a magnesian...latter include base-metal 697 sulfides (BMS: pyrrhotite, pentlandite, chalcopyrite, cubanite, bornite...and Kuskanak complexes (shown by brown squares and red circles, respectively) from Eastern Sayans in Russia...Iberia (Ortega et al., 2004); Cuā NiāPGE deposits, Egypt (Helmy, 2004; 2005); Kvintumā1 CoāNi deposit, Middle |  | | Journal (article/letter/editorial) | | Department of Geology, Minia University, 61519-Minia, Egypt Steinmann Institute, UniversitƤt Bonn, Poppelsdorfer...20 nA with native Ni, Sb, and Bi and natural pyrrhotite, chalcopyrite, arsenopyrite, and PGE metals as...mineralization in the Genina Gharbia mafic-ultramafic intrusion, Eastern Desert, Egypt. Canadian Mineralogist...from three Cu-Ni-PGE prospects, Eastern Desert, Egypt. Ore Geology Reviews, 26, 305ā324. Helmy, H.M.,...Cu-Ni-PGE mineralization, South Eastern Desert, Egypt. Economic Geology, 90, 2350ā2360. Helmy, H.M., Ballhaus |  | Helmy, H. M., Ballhaus, C., Fonseca, R. O. C., Nagel, T. J. (2013) Fractionation of platinum, palladium, nickel, and copper in sulfideāarsenide systems at magmatic temperature. Contributions to Mineralogy and Petrology, 166 (6) 1725-1737 doi:10.1007/s00410-013-0951-9 | Journal (article/letter/editorial) | | Department of Geology, Minia University, Minia 61519, Egypt e-mail: hmhelmy@yahoo.com discrete minerals. In...at 15 kV and 20 nA, using native Ni, natural pyrrhotite, chalcopyrite, arsenopyrite, and PGE metals as...mineralization in the Genina Gharbia mafic-ultramafic intrusion, Eastern Desert Egypt. Can Mineral 42:351ā370...CuāNiāPGE mineralization, South Eastern Desert Egypt. Econ Geol 90:2350ā2360 Helmy HM, Ballhaus C, Berndt...Jr (1964) A thermodynamic study of pyrite and pyrrhotite. Geochim Cosmochim Acta 28:641ā671 Tredoux M |  | | Journal (article/letter/editorial) | | Department of Geology, Minia University, 61519 - Minia, Egypt 8 *Present address: Institut fĆ¼r Geologie und...at 15 kV and 15 nA, using native Ni, natural pyrrhotite, chalcopyrite, 164 arsenopyrite, and pure PGE...interpreted the sperrylite 410 crystals attached to pyrrhotite as being crystallized before mss. Our results...mineralization in the Genina Gharbia mafic-ultramafic intrusion, Eastern Desert Egypt. Canadian Mineralogist...from three CuāNiāPGE prospects, Eastern Desert, Egypt. Ore Geology Reviews 26, 305ā324 580 Helmy H. |  | | Book | | Ā· Yasser Abd El-Rahman Editors The Geology of Egypt Regional Geology Reviews Series Editors Roland...Geology of Egypt 123 ā¢ Editors Zakaria Hamimi Department of Geology Benha University Benha, Egypt JesĆŗs...El-Barkooky Department of Geology Cairo University Giza, Egypt Harald Fritz Department of Geology and Environment...El-Rahman Department of Geology Cairo University Giza, Egypt ISSN 2364-6438 ISSN 2364-6446 (electronic) Regional...by: Prof. M.A. Abd El-Wahed, Tanta University, Egypt) This Springer imprint is published by the registered |  | | Journal (article/letter/editorial) | | mineral assemblages composed of rutile + sphene or pyrrhotite + chalcopyrite + pentlandite blebs can also be...concentrically-zoned maficāultramafic intrusions, Eastern Desert, Egypt. Lithos, 104, 85ā98. Almeida F.F.M.de, Hasui Y....Neoproterozoic Alaskan-type complex, south Eastern Desert, Egypt. Journal of African Earth Sciences, 45, 187ā 197...IdeidEl Sodmein District, central Eastern Desert, Egypt: their metamorphism and petrogenetic implications...Akarem maficāultramafic complex, Eastern Desert, Egypt: a late Precambrian analogue of Alaskan-type complexes |  | | Report (volume) | | undergoing subsolidus crystallization to mostly pyrrhotite (Fe1-xS), pentlandite ((Fe,Ni)9S8) and chalcopyrite...sample, and monitored using the FeS content of pyrrhotite added to the FMQ assemblage, using the calibration...and fS is monitored using the composition of pyrrhotite added with the FMQ mixture (method of 2 Toulmin...is estimated using the FeS content of an added pyrrhotite sensor. Control of fS2 and fO2 in these experiments...and in the presence of magnetite-pyrrhotite and magnetite-pyrrhotite-pyrite assemblages constraining fO2 |
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