Petrogenesis of Maktali fractionated calc-alkaline younger granitoids, Central Eastern Desert, Egypt

  • Waheed ElwanEmail author
  • S. A. Azzaz
  • M. R. Balasi
  • O. Amer
Original Paper


The Egyptian calc-alkaline younger granitoids represent part of broadly distributed late collisional high-K calc-alkaline granitoids in the northern Arabian-Nubian Shield. In the Eastern Desert of Egypt, these granitoids have a significant economic value that they are commonly associated with rare metal-bearing granites. Maktali granitoids are located in Central Eastern Desert and they constitute a two-phase pluton, which consists of leucogranites and monzogranites. They intrude the country metavolcanics with sharp contacts. These granitoids are slightly peraluminous and moderately to highly fractionated high-K calc-alkaline granitoids. Leucogranites and monzogranites were emplaced at temperatures 699.8-8.28.8°C and 757.2–909.6°C and under pressure 1.22–4.8 and 2.36–2.98 kbars respectively. Leucogranites and monzogranites were emplaced at depths 3.28–22.96 km and 6.36–8.5 km and they were crystallized under log Oxygen fugacity between − 13.2 to − 16.1 and − 11.6 to − 14.7 respectively. They are magnetite-series granitoids and their crystallization was controlled by NNO fugacity buffer. Leucogranites and monzogranites share the same magmatic source and they were emplaced during late-collisional stage by melting of crustal source rocks may occur as a consequence of decompression following delamination of the lithospheric root and slab breakoff. Maktali leucogranites could be generated by partial melting and subsequent fractional crystallization of mafic lower crust with addition of melts from the mantle. Maktali monzogranites show distinctive characteristics of rare metal-bearing granites that they contain Fe-columbite and transitional micas. Field and textural evidences together with chemistry of columbite, micas, and trace element behavior suggest the magmatic origin of monzogranites. Moreover, REEs in monzogranites show a pronounced Eu anomaly and a well-visible tetrad effect, supporting their generation by fractional crystallization and fluid-rock interaction during the late stage of granite crystallization.


Maktali Rare metal-bearing granites Columbite Egypt 



The authors are very grateful to Prof. Dr. A. El-Afandy, Nuclear Material Authority, Cairo, Egypt, for his help in carrying out the whole-rock analyses.


  1. Abdalla HM, Helba HA, Mohamed FH (1998) Chemistry of columbite-tantalite minerals in rare metal granitoids, Eastern Desert, Egypt. Mineral Mag 62(6):821–836. CrossRefGoogle Scholar
  2. Abdelsalam MG, Stern RJ (1996) Sutures and shear zones in the Arabian Nubian Shield. J Afr Earth Sci 23:289–310. CrossRefGoogle Scholar
  3. Abdelsalam MG, Liégeois J-P, Stern RJ (2002) The Saharan metacraton. J Afr Earth Sci 34:119–136.
  4. Agrawal S (1995) Discrimination between late-orogenic, post-orogenic, and anorogenic granites by major element compositions. J Geol 103:529–537. CrossRefGoogle Scholar
  5. Ali KA, Moghazi AM, Maurice AE, Omar SA, Wang Q, Wilde SA, Moussa EM, Manton WI, Stern RJ (2012) Composition, age, and origin of the ~ 620 Ma Humr Akarim and Humrat Mukbid A-type granites: no evidence for pre-Neoproterozoic basement in the Eastern Desert, Egypt. Int J Earth Sci 101(7):1705–1722. CrossRefGoogle Scholar
  6. Ali KA, Wilde SA, Stern RJ, Moghazi AM, Ameen SMM (2013) Hf isotopic composition of single zircons from Neoproterozoic arc volcanics and post-collision granites, Eastern Desert of Egypt: implications for crustal growth and recycling in the Arabian Nubian Shield. Precamb Res 239:42–55. CrossRefGoogle Scholar
  7. Anders E, Grevesse N (1989) Abundances of the elements: meteoritic and solar. Geoch Cosmoch Acta 53:197–214. CrossRefGoogle Scholar
  8. Avigad D, Gvirtzman Z (2009) Late Neoproterozoic rise and fall of the northern Arabian-Nubian shield: the role of lithospheric mantle delamination and sub-sequent thermal subsidence. Tectonophys 477:217–228. CrossRefGoogle Scholar
  9. Azer MK (2013) Late Ediacaran (605–580 Ma) post-collisional alkaline magmatism in the Arabian–Nubian Shield: a case study of Serbal ring-shaped intrusion, southern Sinai, Egypt. J Asian Earth Sci 77:203–223. CrossRefGoogle Scholar
  10. Ballouard C, Poujol M, Boulvais P, Branquet Y, Tartèse R, Vigneresse J-L (2015) Is the Nb-Ta fractionation a marker of an interaction with fluids in peraluminous granites? GA2015: 13th Biennial meeting, Nancy, France, pp 675–678Google Scholar
  11. Bau M (1996) Controls on the fractionation of isovalent trace elements in magmatic and aqueous systems: evidence from Y/Ho, Zr/Hf, and lanthanide tetrad effect. Contrib Mineral Petrol 123:323–333 10.1007 CrossRefGoogle Scholar
  12. Be’eri-Shlevin Y, Katzir Y, Whitehouse MJ (2009b) Post-collisional tectonomagmatic evolution in the northern Arabian-Nubian Shield (ANS): time constraints from ion probe U–Pb dating of zircon. J Geol Soc London 166:71–85. CrossRefGoogle Scholar
  13. Be’eri-Shlevin Y, Katzir Y, Valley JW (2009c) Crustal evolution and recycling ina juvenile continent: oxygen isotope ratio of zircon in the northern Arabian Nubian Shield. Lithos 107:169–184. CrossRefGoogle Scholar
  14. Be’eri-Shlevin Y, Samuel MD, Azer MK, Ramo OT, Whitehouse MJ, Moussa HE (2011) The Ediacaran Ferani and Rutig volcano-sedimentary successions of the northernmost Arabian-Nubian Shield (ANS): new insights from zircon U–Pb geochronology, geochemistry and O–Nd isotope ratios. Precambrian Res 188:21–44. CrossRefGoogle Scholar
  15. Bielski M, Jager E, Steinitz G (1979) The geochronology of Iqna granite (Wadi Kid Pluton), southern Sinai. Cont Mineral Petrol 70:159–165. CrossRefGoogle Scholar
  16. Blevin P (2003) Metallogeny of granitic rocks. In Blevin P, Jones M, Chappell B (eds) Magmas to mineralisation: the Ishihara Symposium, Geoscience Australia, Record 2003/14, 155 ppGoogle Scholar
  17. Blevin PL (2004) Redox and compositional parameters for interpreting the granitoid metallogeny of eastern Australia: implications for gold-rich ore systems. Resour Geol 54(3):241–252. CrossRefGoogle Scholar
  18. Blevin PL, Chappell BW (1992) The role of magma sources, oxidation states and fractionation in determining the granitoid metallogeny of eastern Australia. Trans R Soc Edinb Earth Sci 83:305–316. CrossRefGoogle Scholar
  19. Bonin B (2004) Do coeval mafic and felsic magmas in post-collisional to within-plate regimes necessarily imply two contrasting, mantle and crustal, sources? A review. Lithos 78:1–24. CrossRefGoogle Scholar
  20. Černy P, Ercit TS (1985) Some recent advances in the mineralogy and geochemistry of Nb and Ta in rare-element granitic pegmatites. Bull Mineral 108(3-4):499–532Google Scholar
  21. Chappell BW, Bryant CJ, Wyborn D, White AJR, Williams IS (1998) High and low-temperature I -type granites. Res Geol 48:225–236. CrossRefGoogle Scholar
  22. Chazot G, Bertrand H (1995) Genesis of silicic magmas during Tertiary continental rifting in Yemen. Lithos 36:69–83. CrossRefGoogle Scholar
  23. Clarke DB (1992) Granitoid rocks. Chapman & Hall, London ISBN: 978-0-412-29170-8Google Scholar
  24. Condie KC, Belousova E, Griffin WL, Sircombe KN (2009) Granitoid events inspace and time: constraints from igneous and detrital zircon age spectra. Gond Res 15:228–242. CrossRefGoogle Scholar
  25. Davies JH, von Blanckenburg F (1995) Slab breakoff: a model of lithosphere detachment and its test in the magmatism and deformation of collisional orogens. Earth Planet Sci Lett 129(1-4):85–102. CrossRefGoogle Scholar
  26. Deer WA, Howie RA, Zussman J (1966) An introduction to the rock-forming minerals. Longman Group UK, Harlow ISBN 10: 0582442109Google Scholar
  27. du Bray ED (1994) Compositions of micas in peraluminous granitoids of the eastern Arabian Shield: implications for petrogenesis and tectonic setting of highly evolved, rare-metal enriched granites. Earth Planet Sci Lett 116:381–397. CrossRefGoogle Scholar
  28. El Mahallawi MM, Ahmed AF (2012) Late Proterozoic older granitoids from the North Eastern desert of Egypt: petrogenesis and geodynamic implications. Arab J Geosci 5(1):15–27. CrossRefGoogle Scholar
  29. El-Bialy MZ (2010) On the Pan-African transition of the Arabian-Nubian Shield from compression to extension: the post-collision Dokhan volcanic suite of Kid-Malhak region, Sinai, Egypt. Gond Res 17:26–43. CrossRefGoogle Scholar
  30. Eliwa HA, Breitkreuz C, Murata M, Khalaf IM, Bühler B, Itaya T, Takahashi T, Hirahara Y, Miyazaki T, Kimura JI, Shibata T, Koshi Y, Kato Y, Ozawa H, Daas MA, El Gameel K (2014) SIMS zircon U-Pb and mica K-Ar geochronology, and Sr-Nd isotope geochemistry of Neoproterozoic granitoids and their bearing on the evolution of the north Eastern Desert, Egypt. Gond Res 25(4):1570–1598. CrossRefGoogle Scholar
  31. El-Sayed MM, Mohamed FH, Furnes H, Kanisawa S (2002) Geochemistry and petrogenesis of the Neoproterozoic granitoids in the Central Eastern Desert, Egypt. Chem Erde 62:317–346. CrossRefGoogle Scholar
  32. Eyal M, Litvinovsky B, Jahn BM, Zanvilevich A, Katzir Y (2010) Origin and evolution of post-collisional magmatism: coeval Neoproterozoic calc-alkaline and alkaline suites of the Sinai Peninsula. Chem Geol 269:153–179. CrossRefGoogle Scholar
  33. Farahat ES, Azer MK (2011) Post-collisional magmatism in the northern Arabian-Nubian Shield: the geotectonic evolution of the alkaline suite at Gebel Tarbush area, south Sinai, Egypt. Chem Erde 71(3):247–266. CrossRefGoogle Scholar
  34. Farahat ES, Mohamed HA, Ahmed AF, El Mahallawi MM (2007) Origin of I- and A-type granitoids from the Eastern Desert of Egypt: implications for crustal growth in the northern Arabian–Nubian Shield. J Afr Earth Sci 49:43–58. CrossRefGoogle Scholar
  35. Farahat ES, Zaki R, Hauzenberger C, Sami M (2011) Neoproterozoic calc-alkaline peraluminous granitoids of the Deleihimmi pluton, Central Eastern Desert, Egypt: implications for transition from late- to post-collisional tectonomagmatic evolution in the northern Arabian-Nubian Shield. Geol J 46(6):544–560. CrossRefGoogle Scholar
  36. Foster MD (1960) Interpretation of the composition of lithium micas. US Geol Surv Prof Pap 354-E:115–147Google Scholar
  37. Frost BR, Frost CD (2008) A Geochemical Classification for Feldspathic Igneous Rocks. J Petrol 49(11):1955–1969. CrossRefGoogle Scholar
  38. Frost BR, Arculus RJ, Barnes CG, Collins WJ, Ellis DJ, Frost CD (2001) A geochemical classification of granitic rocks. J Petrol 42:2033–2048. CrossRefGoogle Scholar
  39. Garcia D, Fonteilles M, Moutte J (1994) Sedimentary fractionation between Al, Ti, and Zr and the genesis of strongly peraluminous granites. J Geol 102:411–422. CrossRefGoogle Scholar
  40. Hargrove US, Stern RJ, Kimura J-I, Manton WI, Johnson PR (2006) How juvenile is the Arabian-Nubian Shield? Evidence from Nd isotopes and pre- Neoproterozoic inherited zircon in the Bi’r Umq suture zone, Saudi Arabia. Earth Planet Sci Lett 252:308–326. CrossRefGoogle Scholar
  41. Hassan MA, Hashad AH (1990) Precambrian of Egypt. In: The Geology of Egypt, Said, R. Balkema, Rotterdam, pp 201–245Google Scholar
  42. Huebner JS, Sato M (1970) The oxygen fugacity-temperature relationships of manganese oxide and nickel oxide buffers. Am Mineral 55:934–952Google Scholar
  43. Irber W (1999) The lanthanide tetrad effect and its correlation with K/Rb, Eu/Eu/, Sr/Eu, Y/Ho, and Zr/Hf of evolving peraluminous granite suites. Geochim Cosmochim Acta 63:489–508. CrossRefGoogle Scholar
  44. Ishihara S (1977) The magnetite-series and ilmenite-series granitic rocks. Mining Geol 27(145):293–305. CrossRefGoogle Scholar
  45. Johnson PR, Andresen A, Collins AS, Fowler AR, Fritz H, Ghebreab W, Kusky T, Stern RJ (2011) Late Cryogenian–Ediacaran history of the Arabian-Nubian Shield: a review of depositional, plutonic, structural, and tectonic events in the closing stages of the northern East African Orogen. J Afr Earth Sci 61:167–232. CrossRefGoogle Scholar
  46. Jung S, Pfänder JA (2007) Source composition and melting temperatures of orogenic granitoids: constraints from CaO/Na2O, Al2O3/TiO2 and accessory mineral saturation thermometry. Euro J Mineral 19(6):859–870. CrossRefGoogle Scholar
  47. Kersting AB, Arculus RJ, Gust DA (1996) Lithospheric Contributions to Arc Magmatism: Isotope Variations Along Strike in Volcanoes of Honshu, Japan. Science 272(5267):1464–1468. CrossRefGoogle Scholar
  48. Koljonen T, Rosenberg RJ (1974) Rare earth elements in granitic rocks. Lithos 7(4):249–261. CrossRefGoogle Scholar
  49. Küster D (2009) Granitoid-hosted Ta mineralization in the Arabian-Nubian Shield: ore deposit types, tectono-metallogenetic setting and petrogenetic framework. Ore Geol Rev 35:68–86. CrossRefGoogle Scholar
  50. Liégeois JP, Navez J, Hertogen J, Black R (1998) Contrasting origin of post-collisional high-K calc-alkaline and shoshonitic versus alkaline and peralkaline granitoids. The use of sliding normalization. Lithos 45:1–28. CrossRefGoogle Scholar
  51. Linnen R, Keppler H (1997) Columbite solubility in granitic melts: consequences for the enrichment and fractionation of Nb and Ta in the Earth’s crust. Contrib Mineral Petrol 128(2-3):213–227. CrossRefGoogle Scholar
  52. McDonough WF, Sun S-s (1995) The composition of the Earth. Chem Geol 120(3–4):223–253.
  53. Moghazi AM (1999) Magma source and evolution of late Neoproterozoic granitoids in the Gabal El Urf area, Eastern Desert, Egypt: geochemical and Sr–Nd isotopic constraints. Geol Mag 136:285–300. CrossRefGoogle Scholar
  54. Moghazi AM (2002) Petrology and geochemistry of Pan-African granitoids, Kab Amiri area, Egypt-implications for tectonomagmatic stages of the Nubian Shield evolution. Mineral Petrol 75:41–67. CrossRefGoogle Scholar
  55. Moghazi AM, Harbi HM, Ali KA (2011) Geochemistry of the Late Neoproterozoic Hadb adh Dayheen ring complex, Central Arabian Shield: implications for the origin rare-metal-bearing post-orogenic A-type granites. J Asian Earth Sci 42:1324–1340. CrossRefGoogle Scholar
  56. Mohamed FH, El-Sayed MM (2008) Post-orogenic and anorogenic A-type fluorite-bearing granitoids, Eastern Desert, Egypt: petrogenetic and geotectonic implications. Chem Erde 68(4):431–450. CrossRefGoogle Scholar
  57. Moussa EMM, Stern RJ, Manton WI, Ali KA (2008) Shrimp zircon dating and Sm/Nd isotopic investigations of Neoproterozoic granitoids, Eastern Desert, Egypt. Precambrian Res 160:341–356. CrossRefGoogle Scholar
  58. Nicolae I, Saccani E (2003) Petrology and geochemistry of the Late Jurassic calc-alkaline series associated to Middle Jurassic ophiolites in the South Apuseni Mountains (Romania). Swiss J Geosci Suppl 83(1):81–96. CrossRefGoogle Scholar
  59. Peccerillo A, Taylor SR (1976) Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey. Contrib Mineral Petrol 58:63–81. CrossRefGoogle Scholar
  60. Pollard P (1989) Geochemistry of granites associated with tantalum and niobium mineralization. In: Lanthanides, tantalum and niobium. Springer, Berlin Heidelberg, pp. 145–168.
  61. Ramsay CR (1986) Specialized felsic plutonic rocks of the Arabian Shield and their precursors. J Afr Earth Sci 4:153–168. CrossRefGoogle Scholar
  62. Rudnick RL, Gao S (2003) The composition of the continental crust. In: Rudnick RL (ed) The Crust. Elsevier-Pergamon, Oxford, pp 1–64Google Scholar
  63. Sami M, Ntaflos T, Farahat ES, Mohamed HA, Ahmed AF, Hauzenberger C (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 Geol Rev 88:1–22. CrossRefGoogle Scholar
  64. Shand SJ (1947) The Eruptive Rocks, 3rd edn. John Wiley, New York 444 ppGoogle Scholar
  65. Sperner B, Lorenz F, Bonjer K, Hettel S, Mueller B, Wenzel F (2001) Slab break-off ± abrupt cut or gradual detachment? New insights from the Vrancea Region (SE Carpathians, Romania). Terra Nova 13:172–179. CrossRefGoogle Scholar
  66. Stern RJ (1994) Arc assembly and continental collision in the Neoproterozoic East African orogen: implications for consolidation of Gondwanaland. Ann Rev Earth Planet Sci 22:319–351. CrossRefGoogle Scholar
  67. Stern RJ (2002) Crustal evolution in the East African Orogen: a neodymium isotopic perspective. J Afr Earth Sci 34:109–117. CrossRefGoogle Scholar
  68. Stern RJ (2008) Neoproterozoic crustal growth: the solid Earth system during acritical episode of the Earth history. Gond Res 14:33–50. CrossRefGoogle Scholar
  69. Stern RJ, Hedge CE (1985) Geochronologic and isotopic constraints on late Precambrian crustal evolution in the Eastern Desert of Egypt. Am J Sci 285:97–127. CrossRefGoogle Scholar
  70. Stoeser DB, Frost CD (2006) Nd, Pb, Sr, and O isotopic characterization of Saudi Arabian Shield terranes. Chem Geol 226:163–188. CrossRefGoogle Scholar
  71. Streckeisean L, Le Maitrer W (1979) A chemical approximation to the modal QAPF classification of the igneous rocks. Neues Jahrbuch fur Mineralogie Abhandlungen 136:169–206Google Scholar
  72. Sun S-s, McDonough WF (1989) Chemical and isotopic systematic of ocean basalts: implication for mantle composition and processes. In: Saunders AD, Norry MJ (eds.) Magmatism in the Ocean Basins. Geol Soc London 42:313–345. CrossRefGoogle Scholar
  73. Thornton CP, Tuttle OF (1960) Chemistry of igneous rocks--[Part] 1, Differentiation index. Am J Sci 258(9):664–684.
  74. Tischendorf G (1977) Geochemical and Petrographic Characteristics of Silicic Magmatic Rocks Associated with Rare-Element Mineralization. In: Stemprok M, Burnol L, Tischendorf G (eds) Metallization Associated with Acid Magmatism. Czechoslovakia Geological Survey, Prague, pp 41–98Google Scholar
  75. Turner SP, Platt JP, George RMM, Kelley SP, Pearson DG, Nowell GM (1999) Magmatism associated with orogenic collapse of the Betic-Alboran Domain, SE Spain. J Petrol 40:1011–1036. CrossRefGoogle Scholar
  76. Wilson M (1989) Igneous Petrogenesis. Chapman and Hall, London, p 466 ISBN 13: 9780045520251CrossRefGoogle Scholar
  77. Wones D, Eugster H (1965) Stability of Biotite: Experiment, Theory, and Application. Am Mineral 50(9):1228–1272Google Scholar
  78. Yang XM (2017) Estimation of crystallization pressure of granite intrusions. Lithos 286:287 324-329. CrossRefGoogle Scholar
  79. Zen E (1988) Phase relations of peraluminous granitic rocks and their petrogenetic implications. Ann Rev Earth Planet Sci 16:21–52. CrossRefGoogle Scholar

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© Saudi Society for Geosciences 2019

Authors and Affiliations

  1. 1.Geology Department, Faculty of ScienceZagazig UniversityZagazigEgypt

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