gscienceMining Science and Technology (Russia)Горные науки и технологии2500-0632The National University of Science and Technology MISiIS (NUST MISIS)10.17073/2500-0632-2018-1-89-96gscience-98Research ArticleGEOLOGY OF MINERAL DEPOSITSГЕОЛОГИЯ МЕСТОРОЖДЕНИЙ ПОЛЕЗНЫХ ИСКОПАЕМЫХLate-orogenic gold deposits of EgyptПозднеорогенные месторождения золота ЕгиптаЭльсайедХани ШарафелдинElsayedHani Sharafeldin

Москва

23, Miklouho-Maklay's street, Moscow, Russia, 117997

hanisharfeldin@gmail.comРоссийский государственный геологоразведочный университет им. С. ОрджоникидзеРоссияRussian State Geological Prospecting University n.a. Sergo OrdzhonikidzеRussian Federation201827042018018996Copyright © Elsayed H.S., 20182018Эльсайед Х.Ш.Elsayed H.S.This work is licensed under a Creative Commons Attribution 4.0 License.https://mst.misis.ru/jour/article/view/98

Egypt belongs to states developing its mineral resource base. Gold-bearing territory of Egypt is located within the Nubian-Arabian shield in the Neoproterozoic collision zone of transverse thrusts. Granitoid massifs are widely developed within this tectonic zone. The massifs of postorogenic granite (540−435 Ma) are confined to the tectonic collision zones of the Late Riphean and characterized by elevated alkalinity. Spatial relationship has been established between metasomatic halos of ultramafic rock carbonatization, granite intrusions in them, and gold mineralization. The gold mineralization is associated with quartz veins in the granite. In all these quartz gold-bearing veins, gold is associated with pyrite or aggregates of pyrite and arsenopyrite. The veining zones consist of massive quartz with impregnated gold and sulfide minerals. Thus, predominant type of the Precambrian gold mineralization is gold-quartz and gold-sulfide-quartz ore veins associated with zones of increased tectonic permeability of the crust and magmatic rocks – derivatives of granitic magmas and sulfide fluid systems.

Египет относится к государствам, развивающим свою минерально-сырьевую базу. Золотоносная территория Египта находится в пределах Нубийско-Аравийского щита в неопротерозойской коллизионной зоне надвигов. В пределах этой тектонической зоны широко развиты гранитоидные массивы. Массивы посторогенных гранитов (540-435 млн лет) приурочены к зонам тектонической коллизии позднерифейского времени, отличаются повышенной щелочностью. Установлена пространственная связь между метасоматическими ореолами карбонатизации ультрамафитовых пород, внедрённых в них гранитных интрузивов и минерализацией золота Золотое оруденение связано с кварцевыми жилами в гранитах. Во всех кварцевых золотоносных жилах золото находится в ассоциации с пиритом или с агрегатами пирита и арсенопирита. Зоны прожилкования состоят из массивного кварца с рассеянным золотом и сульфидными минералами. Таким образом, преобладающим типом докембрийской золотой минерализации являются золото-кварцевые и золото-сульфидно-кварцевые рудные жилы, связанные с зонами повышенной тектонической проницаемости коры и наличием магматических пород - производных кислых магм и сульфидных флюидных систем.

Аравийско-Нубийский щитколлизионная зонапозднеорогенные гранитызолото-кварц-сульфидная формациязолото-кварцевые жилыArabian-Nubian shieldcollision zonelate orogenic granitegold-quartz-sulfide formationgold-quartz veins.ReferencesНекрасов Е.М., Дорожкина Л.А., Дудкин Н.В. Особенности геологии и структуры крупнейших золоторудных месторождений эндогенного класса. М.: Астрея-центр, 2015.  192 с.Nekrasov E.M., Dorozhkina L.A., Dudkin N.V. Osobennosti geologii i struktury krupnejshih zolotorudnyh mesto-rozhdenij jendogennogo klassa [Features of geology and structure of the largest gold ore deposits of the endogenous class]. Moscow, Astrea-Center, 2015, 192 p.Abdelnasser A., Kumral M. Mineral chemistry and geochemical behavior of hydrothermal alterations associated with mafic intrusiverelated Au deposits at the Atud area, Central Eastern Desert, Egypt. Ore Geol. Rev. 2016, 77, pp. 1-24.Abdelnasser A., Kumral M. Mineral chemistry and geochemical behavior of hydrothermal alterations associated with mafic intrusive-related Au deposits at the Atud area, Central Eastern Desert, Egypt. Ore Geol. Rev. 2016, 77, pp.1–24.Akaad M.K., Noweir A. Geology and Lithostratigraphy of the Arabian Desert Orogenic Belt of Egypt between Lat. 25° 35′ and 26° 30′. Bulletin of the Institute for Applied Geology King Abdulaziz University 1980, Vol. 3, pp. 127-135.Akaad M.K., Noweir A. Geology and Lithostratigraphy of the Arabian Desert Orogenic Belt of Egypt between Lat. 25° 35′ and 26° 30′. Bulletin of the Institute for Applied Geology King Abdulaziz University 1980, Vol. 3, pp. 127–135.Amin M.S. Geology and mineral deposits of Umm Rus sheet. Geological Survey of Egypt, Cairo, 1955.Amin M.S. Geology and mineral deposits of Umm Rus sheet. Geological Survey of Egypt, Cairo, 1955.Azzaz A.S. Distribution of gold and associated elements in the wallrocks of the Sukkari gold deposit, Central Eastern Desert, Egypt. Arab. J. Sci. Eng. 1987, 12 (3), pp.243-250.Azzaz A.S. Distribution of gold and associated elements in the wallrocks of the Sukkari gold deposit, Central Eastern Desert, Egypt. Arab. J. Sci. Eng. 1987, 12 (3), pp. 243-250.Botros N.S. The role of the granite emplacement and structural setting on the gen¬esis of gold mineralization in Egypt. Ore Geol. Rev. 2015, 70, pp.173-187.Botros N.S. The role of the granite emplacement and structural setting on the gen¬esis of gold mineralization in Egypt. Ore Geol. Rev. 2015, 70, pp.173-187.Cavaney R.J., Geology of Sukari Gold Mine, Eastern Desert Egypt. (Internal Report to Centamin Egypt Ltd and Pharaoh Gold Mines) 2005.Cavaney R.J., Geology of Sukari Gold Mine, Eastern Desert Egypt. (Internal Report to Centamin Egypt Ltd and Pharaoh Gold Mines) 2005.Cook NJ, Chryssoulis SL. Concentrations of ‘‘invisible gold’’ in the common sulfides. Can Mineral.1990, 28:pp.1–16Cook N.J, Chryssoulis S.L. Concentrations of ‘‘invisible gold’’ in the common sulfides. Can Mineral.1990, 28:pp.1–16El Shazly E.M. Classification of the Egyptian mineral deposits, Egypt. Cairo, Egyptian Journal of Geology, 1957, vol. 1, pp. 1-20.El Shazly E.M. Classification of the Egyptian mineral deposits, Egypt. Cairo, Egyptian Journal of Geology, 1957, vol. 1, pp. 1-20.Fritz H., Abdelsalam M., Ali K.A., Bingen B., Collins A.S., Fowler, A.R., Ghebreab, W., Hauzenberger, C.A., Johnson, P.R., Kusky, T.M., Macey, P., Muhongo, S., Stern, R.G., Viola, G. Orogen styles in the East African Orogen: a review of the Neoproterozoic to Cambrian tectonic evolution. J. Afr. Earth Sci. 2013, 86, pp. 65-106.Fritz H., Abdelsalam M., Ali, K.A., Bingen B., Collins A.S., Fowler A.R., Ghebreab W., Hauzenberger C.A., Johnson P.R., Kusky T.M., Macey P., Muhongo S., Stern R.G., Viola G. Orogen styles in the East African Orogen: a review of the Neoproterozoic to Cambrian tectonic evolution. J. Afr. Earth Sci. 2013, 86, pp. 65-106.Fritz H., Dalmeyer D.R., Wallbrecher E., Loizenbauer J., Hoinkes G., Neumayr P., Khudeir A.A. Neoproterozoic tectonothermal evolution of the Central Eastern Desert, Egypt: a slow velocity tectonic process of core complex exhumation. J. Afr. Earth Sci. 2002, 34, pp. 543-576.Fritz H., Dalmeyer D.R., Wallbrecher E., Loizenbauer J., Hoinkes G., Neumayr P., Khudeir A.A. Neoproterozoic tectonothermal evolution of the Central Eastern Desert, Egypt: a slow velocity tectonic process of core complex exhumation. J. Afr. Earth Sci. 2002, 34, pp. 543-576.Fritz H., Wallbrecher E., Khudier A.A., Abu El Ela F., Dallmeyer R.D. Formation of Neoproterozoic metamorphic core complexes during oblique convergence, Eastern Desert, Egypt.J. Afr. Earth Sci., 1996, 23, pp. 311-329.Fritz H., Wallbrecher E., Khudier A.A., Abu El Ela, F., Dallmeyer R.D. Formation of Neoproterozoic metamorphic core complexes during oblique convergence, Eastern Desert, Egypt.J. Afr. Earth Sci., 1996, 23, pp. 311-329.Greiling R.O., Abdeen M.M., Dardir A.A., El Akhal H., El Ramly M.F., Kamal El Din G.M., Osman A.F., Rashwan AA, Rice A.H., Sadek M.F. A structural synthesis of the Proteorozoic Arabian-Nubian Shield in Egypt. Geol. Rundsch.1994. 83, pp. 484-501.Greiling R.O., Abdeen M.M., Dardir A.A., El Akhal H., El Ramly M.F., Kamal El Din G.M., Osman A.F., Rashwan AA, Rice A.H., Sadek M.F. A structural synthesis of the Proteorozoic Arabian-Nubian Shield in Egypt. Geol. Rundsch.1994. 83, pp. 484-501.Ghoneim M.F., Bjørlykke A., Harraz H.Z. Rb–Sr and Sm/Nd Isotopic Systems of El Sukkari Granite, Eastern Desert, Egypt. 1st Int. Conf.on the Geology of Africa, Assiut, Egypt, 1999, 1, pp. 281–282.Ghoneim M.F., Bjørlykke A., Harraz H.Z. Rb–Sr and Sm/Nd Isotopic Systems of El Sukkari Granite, Eastern Desert, Egypt. 1st Int. Conf.on the Geology of Africa, Assiut, Egypt, 1999,1, pp. 281–282.Harraz H.Z., Hamdy M.M. Zonation of primary haloes of Atud auriferous quartz vein deposit, Central Eastern Desert of Egypt: a potential exploration model targeting for hidden mesothermal gold deposits. J. Afr. Earth Sci. 2015, 101, pp. 1–18.Harraz H.Z., Hamdy M.M. Zonation of primary haloes of Atud auriferous quartz vein deposit, Central Eastern Desert of Egypt: a potential exploration model targeting for hidden mesothermal gold deposits. J. Afr. Earth Sci. 2015, 101, pp. 1–18.Helmy H.M., Kaindl R., Fritz H. The Sukari gold mine, Eastern Desert-Egypt: structural setting, mineralogy and fluid inclusion study. Mineralium Deposita, 2004, 39, pp. 495–511.Helmy H.M., Kaindl R., Fritz H. The Sukari gold mine, Eastern DesertEgypt: structural setting, mineralogy and fluid inclusion study. Mineralium Deposita, 2004, 39, pp. 495–511.Hume W.F. A preliminary report on the geology of the Eastern Desert of Egypt between Latitudes 22 degrees north and 25 degrees north; Egyptian Survey Dept., Cairo, 1907. (Paper No. 1).Hume W.F. A preliminary report on the geology of the Eastern Desert of Egypt between Latitudes 22 degrees north and 25 degrees north; Egyptian Survey Dept., Cairo, 1907. (Paper No. 1).Khalaf I.M, Oweiss K. A. Gold prospection in the environs of Sukari gold mine, central Eastern Desert, Egypt. Ann. Geol Surv Egypt.1993. 19:97–108.Khalaf I.M, Oweiss K. A. Gold prospection in the environs of Sukari gold mine, central Eastern Desert, Egypt. Ann. Geol Surv Egypt.1993. 19:97–108.Khalil I. K., and Arslan A.I. Petrography – Thin Section transmitted Light and Reflected light study of specimens from Sukari Gold Mine, Internal consulting reports, July and December 2006.Khalil I. K., and Arslan A.I. Petrography – Thin Section transmitted Light and Reflected light study of specimens from Sukari Gold Mine, Internal consulting reports, July and December 2006.Kochin G.G., Bassiuni F.A. The mineral resources of the UAR, Report on generalization of geological data on mineral resources of the UAR carried put under contract 1247 in 1966-1968. Part I, Metallic minerals: Internal report, Geol. Surv. of Egypt, 18/1968.Kochin G.G., Bassiuni F.A. The mineral resources of the UAR, Report on gener-alization of geological data on mineral resources of the UAR carried put under contract 1247 in 1966-1968. Part I, Metallic minerals: Internal report, Geol. Surv. of Egypt, 18/1968.Mohamed A. Abd El-Wahed, Harraz H., ElBehairy M.H. Transpressional imbricate thrust zones controlling gold mineralization in the Central Eastern Desert of Egypt. Ore Geology Reviews, 2016, 78, pp. 424-446.Mohamed A. Abd El-Wahed, Harraz H., El-Behairy M.H. Transpressional imbricate thrust zones controlling gold mineralization in the Central Eastern Desert of Egypt. Ore Geology Reviews, 2016, 78, pp. 424-446.Sabet AH, Bordonosov VP. The gold ore formations in the Eastern Desert of Egypt. Ann. Geol. Surv. Egypt, 1984, 16: pp. 35-42Sabet AH, Bordonosov VP. The gold ore formations in the Eastern Desert of Egypt. Ann. Geol. Surv. Egypt, 1984, 16:pp. 35–42.Sharara N.A. Stable Isotopes and Fluid Inclusions of the Gold Mineralizations at El Sukkari District, Central Eastern Desert, Egypt: Genetic Constraints. International Conference on Geochemistry, Alexandria University, Egypt, 15-16 Sept 1999, pp. 317-339.Sharara N.A. Stable Isotopes and Fluid Inclusions of the Gold Mineralizations at El Sukkari District, Central Eastern Desert, Egypt: Genetic Constraints. International Conference on Geochemistry, Alexandria University, Egypt, 15-16 Sept 1999, pp. 317-339.Smith P., Osman R., Franzmann D., Johnson N., Boreham C. Mineral Resource and Reserve Estimate for the Sukari Gold Project. Egypt. Internal Technical Report, Centamin Egypt Ltd, 2017, 177 p.Smith,P., Osman R., Franzmann D., Johnson N., Boreham C. Mineral Resource and Reserve Estimate for the Sukari Gold Project. Egypt. Internal Technical Report, Centamin Egypt Ltd, 2017, (177p.).Stern R.J., Johanson P.R., Kroner A., Yibas B. Neoproterozoic Ophiolites of the ArabianNubian Shield. In: Kusky, T.M. (Ed.), Precambrian Ophiolites and Related Rocks Developments in Precambrian Geology Vol. 13. Elsevier, Amsterdam, 2004, pp. 95-128.Stern R.J., Johanson P.R., Kroner A., Yibas B. Neoproterozoic Ophiolites of the Arabian-Nubian Shield. In: Kusky, T.M. (Ed.), Precambrian Ophiolites and Related Rocks Developments in Precambrian Geology Vol. 13. Elsevier, Amsterdam, 2004, pp. 95-128.Takla M.A., El Dougdoug A.A., Rasmay A.H., Gad A.A., El Tabbal H.K. Origin of Um Eleiga gold mineralization, south Eastern Desert, Egypt. Egypt, 1990, Mineral, 2, pp. 3-20.Takla M.A., El Dougdoug A.A., Rasmay A.H., Gad A.A., El Tabbal H.K. Origin of Um Eleiga gold mineralization, south Eastern Desert, Egypt. Egypt, 1990, Mineral, 2, pp. 3-20.

The authors declare that there are no conflicts of interest present.