2411-3336 2541-9404 Записки Горного института Journal of Mining Institute Санкт-Петербургский горный университет императрицы Екатерины ΙΙ Empress Catherine II Saint Petersburg Mining University 10.31897/pmi.2018.6.573 pmi-13145 https://pmi.spmi.ru/pmi/article/view/13145 Геология Geology Migration forms of chemical elements in the intrusive rocks of the Eastern Desert (El Sela area, Egypt) Подвижные формы химических элементов интрузивных пород Восточной пустыни Египта (область Ель Села) Ghoneim M. M. Гхонеим М. М. Ghoneim M. M. moh.gho@mail.ru Санкт-Петербургский государственный университет; Управление ядерных материалов, Каир, Египет (Санкт-Петербург, Россия) Saint-Petersburg State University; Nuclear Materials Authority, Cairo, Egypt (State Petersburg, Russia) Panova E. G. Панова Е. Г. Panova E. G. e.panova@spbu.ru Санкт-Петербургский государственный университет (Санкт-Петербург, Россия) Saint-Petersburg State University (Saint Petersburg, Russia) 21 12 2018 2018 234 573 580 27 06 2018 18 09 2018 21 12 2018 © 2018 М. М. Гхонеим, Е. Г. Панова © 2018 M. M. Ghoneim, E. G. Panova 2018 М. М. Гхонеим, Е. Г. Панова M. M. Ghoneim, E. G. Panova Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0) This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0) https://pmi.spmi.ru/pmi/article/view/13145

В Восточной пустыне Египта развиты интрузивные породы с ураново-редкоземельной минерализацией (двуслюдяные граниты, микрограниты, долериты и бостониты). Оценено содержание химических элементов эталонных проб интрузивных пород и их водорастворимой (коллоидно-солевой) фракции. Фракция извлекается водой из породы при специально подобранных условиях. Проба породы и ее коллоидно-солевая фракция анализируются методом масспектометрии с индуктивно связанной плазмой. Химическая характеристика выделенной фракции отражает мобильную, подвижную часть химических элементов породы. Сравнение полученных данных позволяет оценить долю миграционно-способных и трудноподвижных форм химических элементов.

In the Egypt's Eastern Desert intrusive rocks with U-REE mineralization (two-mica granites, microgranites, dolerites, and bostonites) are developed. We estimated the content of chemical elements in reference samples of intrusive rocks and also in their water-soluble (colloid-salt) fraction. This fraction is water-extracted from the rock under certain conditions. The rock sample and its colloid-salt fraction are analyzed using ICP-MS. The chemical characteristic of the extracted fraction reflects the mobile migrating part of the chemical elements in the composition of the rocks. Comparison of the obtained data allows us to estimate the share of migrating and weakly migrating elements.

 Ключевые слова уран редкие земли интрузивные породы подвижные формы химических элементов Восточная пустыня Египет Keywords uranium rare earths elements intrusive rocks migration forms of chemical elements Eastern desert Egypt Ghoneim M.M., Abdel' Gawad A.E. Uranium vein mineralization of the Eastern desert, Egypt. Vestnik Ural'skogo otdeleniya Rossiiskogo mineralogicheskogo obshchestva. 2017. N 14, p. 5-16 (in Russian). Oleinikova G.A., Panova E.G. Geodata resource for rocks nano-fractions analysis. Litosfera. 2011. N 1, p. 83-93 (in Russian). Oleinikova G.A., Panova E.G. Information resource of soil nano-fractions analysis. Vestnik SPbGU. 2007. Ser. 7. Iss. 1. p. 60-66 (in Russian). Oleinikova G.A., Panova E.G., Shishlov V.A., Rusanova L.I. Patent № 2370764 RU. S21. Nanotechnological method of determining the presence and quantity of rare and dispersed chemical elements in rocks, ores, and products of their processing. Publ. 20.10.2009. Byul. N 29 (in Russian). Fridrikhsberg D.A. The course of colloid chemistry. St. Petersburg: Lan', 2010, p. 416 (in Russian). Abdel Gawad A.E., Ibrahim E.M. Activity ratios as a technique for studying uranium mobility at El Sela shear zone, southeastern Desert, Egypt. Journal of Radioanalytical and Nuclear Chemistry. Springer. 2016. Vol. 308, p. 129-142. Abdel Gawad A.E., Orabi A.H., Bayoumi M.B. Uranium evaluation and its recovery from microgranite dike at G. El Sela area, South Eastern Desert, Egypt. Arabian Journal of Geosciences. 2015. Vol. 8, p. 4565-4580. DOI: 10.1007/s12517-014-1499-3. Abd El-Naby H.H., Dawood Y.H. Natural attenuation of uranium and formation of autunite at the expense of apatite within an oxidizing environment, south Eastern Desert of Egypt. Applied Geochemistry. 2008. Vol. 23, p. 3741-3755. DOI: 10.1016/j.apgeochem.2008.09.011. Ali K.G. Structural control of El Sela granites and associated uranium deposits, south Eastern Desert, Egypt. Arabian Journal of Geosciences. 2011. Vol. 6. N 6, p. 1753-1767. DOI: 10.1007/s12517-011-0489-y. Ali M.A., Lentz D.R. Mineralogy, geochemistry and age dating of shear zone-hosted Nb-Ta-, Zr-Hf-, Th-, U-bearing granitic rocks in the Ghadir and El-Sella areas, South Eastern Desert, Egypt. Chinese Journal of Geochemistry. 2011. Vol. 30, p. 453-478. Cuney M., Fort P.Le. , Wang Z.X. Uranium and Thorium Geochemistry and Mineralogy in the Manaslu leucogranite (Nepal, Himalaya). Geology of Granites and Their Metallogenetic Relations. 1984, p. 853-873. Ibrahim M.E., Zalata A.A., Assaf H.S., Ibrahim I.H., Rashed M.A. El Sella shear zone, South Eastern Desert, Egypt. Example of vein-type uranium deposit. The 9th International Mining, Petroleum and Metallurgical Engineering Conference. Cairo University, Egypt, Mining. 2005, p. 41-55. Gaafar I., Cuney M., Abdel Gawad A. Mineral chemistry of two-mica granite rare metals: impact of geophysics on the distribution of uranium mineralization at El Sela shear zone, Egypt. Open Journal of Geology. 2014. Vol. 4, p. 137-160. Ghoneim M.M., Abdel Gawad A.E. Vein-type uranium mineralization in the Eastern Desert of Egypt. Izvestiya UGGU. 2018. Iss. 1(49), p. 33-38. DOI: 10.21440/2307-2091-2018-1-33-38. El Mezayen A.M., Heikal M.A., El-Feky M.G., Shahin H.A., Abu Zeid I.K., Lasheen S.R. Petrology, geochemistry, radioactivity, and M–W type rare earth element tetrads of El Sela altered granites, south Eastern Desert, Egypt. Acta Geochimica, 2018. DOI: 10.1007/s11631-018-0274-7. Shahin H.A. Zr-Y-Nb-РЗМ mineralization associated with microgranite and basic dykes at El Sela shear zone, South Eastern Desert, Egypt. Springer Plus. 2014. Vol. 3. N 573, p. 12. DOI: 10.1186/2193-1801-3-573. Poty B., Leroy J., Cathelineau M., Cuney M., Friedrich M., Lespinasse M., Turpin L. Uranium deposits spatially related to granites in the French part of the Hercynian orogen. Vein Type Uranium Deposits, IAEA-TC-361, International Atomic Energy Agency, Vienna; 1986, p. 215-246. Abdel-Meguid A.A., Cuney M., Ammar S.E., Ibrahim T.M., Ali K.G., Shahin H.A., Omer S.A., Gaafar I.M., Masoud S.M., Khamis A.A., Haridy M.H., Kamel A.I., Abdel Gawad A.E., Mostafa B.M., Abo Donia A.M., Aly E.M. Uranium potential of Eastern Desert granites, Egypt. Internal Report for Project: EGY/03/014: Technical Assistance by (IAEA), 2003, p. 270. Ibrahim T.M., Amer T.E., Ali K.G., Omar S.A. Uranium potentiality and its extraction from El Sela shear zone, south Eastern Desert Egypt. Faculty of Science, Minufia University. 2007. Vol. 11, p. 1-18.