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Mineral chemistry of monazite from the black sand deposits, northern Sinai, Egypt: a provenance perspective

Published online by Cambridge University Press:  05 July 2018

Y. H. Dawood  and
H. H. Abd El-Naby
Y. H. Dawood*
Affiliation:
Department of Geology, Faculty of Science, Ain Shams University, Cairo, Egypt
H. H. Abd El-Naby
Affiliation:
Nuclear Materials Authority, P.O. 530 El-Maadi, Cairo, Egypt
*
E-mail: [email protected]
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Abstract

Electron microprobe analysis (EMPA) and microscopic investigations were performed on monazite grains from the black sand deposits of northern Sinai beach. Electron microprobe backscattered electron images, X-ray mapping and wavelength dispersive spectroscopy line scans showed some grains with sector zoning and others with thorite inclusions. Based on the EMPA data, the studied monazite is grouped into monazite-(Ce) and Th-rich monazite. Monazite-(Ce) is enriched in REE and P, whereas Th-rich monazite is enriched in Th, U, Ca, Y, Si and Fe. The compositional variations of monazite are governed by the substitution of REE by Th, U, Ca and Y. The monazite grains show enriched chondrite-normalized REE patterns represented mainly by LREE and only Gd from the HREE. These patterns demonstrate negative Nd and Euanomalies. The floods associated with the pluvial periods which prevailed in Egypt during the Pleistocene, were able to erode the source rocks and liberate heavy minerals including monazite. The mineral grains were transported through several wadis and tributaries to the main channel of the River Nile. At the confluence sites, these heavy minerals were mixed with Ethiopian and central African heavy mineral assemblages. The grains continued to move together downriver until being deposited in their current locations. The analytical results suggest that pegmatites and granites of the Eastern Desert are the most likely source of the monazite. However, due to the large area of the Nile watershed, other undiscovered sources are possible.

Keywords

SinaiEgyptmonaziterare-earth elementspegmatiteblack sand depositsgraniteprovenance
Type
Research Article
Information
Mineralogical Magazine , Volume 71 , Issue 4 , August 2007 , pp. 389 - 406
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2007

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Footnotes

Author’s present corresponding address: King Abdulaziz University, Faculty of Earth Sciences, P.O. 802606, Jeddah 21589, KSA

References

Åmli, R. (1975) Mineralogy and rare earth geochemistry of apatite and xenotime from the Gloserheia granite pegmatite, Froland, southern Norway. American Mineralogist, 60, 607–620.Google Scholar
Attia, M.I. (1955) Topography, geology and iron–ore deposits of the district east of Aswan. Geological Survey of Egypt Report, 262 pp.Google Scholar
Bea, F. (1996) Residence of REE, Y, Th and U in granites and crustal protoliths; implications for the geochemistry of crustal melts. Journal of Petrology, 37, 521–552.CrossRefGoogle Scholar
Bingen, B. and van Breemen, O. (1998) U–Pb monazite ages in amphibolite–to granulite–facies orthogneiss reflect hydrous mineral breakdown reactions: Sveconorwegian Province of SW Norway. Contribution to Mineralogy and Petrology, 132, 336–353.CrossRefGoogle Scholar
Bowie, S.H.U. and Horne, J.E.T. (1953) Cheralite, a new mineral of the monazite group. Mineralogical Magazine, 30, 93–99.Google Scholar
Broska, I., Petrík, I. and Williams, C.T. (2000) Coexisting monazite and allanite in peraluminous granitoids of the TribeèMountains, Western Carpathians. American Mineralogist, 85, 22–32.CrossRefGoogle Scholar
Broska, I., Williams, C.T., Janák, M. and Nagy, G. (2005) Alteration and breakdown of xenotime–(Y) and monazite–(Ce) in granitic rocks of the Western Carpathians, Slovakia. Lithos, 82, 71–83.CrossRefGoogle Scholar
Cheburkin, A.K., Frei, R. and Shotyk, W. (1997) An energy–dispersive miniprobe multielement analyzer (EMMA) for direct analysis of trace elements and chemical age dating of single mineral grains. Chemical Geology, 135, 75–87.CrossRefGoogle Scholar
Dabbour, G.A., Morsy, M.A. and Kamel, A.F. (1990) Radioactivity and heavy economic minerals of some Quaternary sediments at El Arish beach, north Sinai, Egypt. Annals of the Geological Survey of Egypt, XVI, 51–56.Google Scholar
Dabous, A.A., Dabbour, G.A. and Dawood, Y.H. (1992) Heavy minerals content and radioactivity of the black sands deposits, north Sinai area, Egypt. Egyptian Mineralogist, 4, 87–108.Google Scholar
Dawood, Y.H. (2001) Uranium–series disequilibrium dating of secondary uranium ore from the south Eastern Desert of Egypt. Applied Radiation and Isotopes, 55, 881–887.CrossRefGoogle Scholar
Drost, K., Linnemann, U., McNaughton, N., Fatka, O., Kraft, P., Gehmlich, M., Tonk, C. and Marek, J. (2004) New data of the Neoproterozoic–Cambrian geotectonic setting of the Teplá–Barrandian volcanosedimentary successions: geochemistry, U–Pb zircon ages, and provenance (Bohemian Massif, Czech Republic). International Journal of Earth Sciences, 93, 742–757.CrossRefGoogle Scholar
El Fishawi, N.M. and Molnar, B. (1985) Mineralogical relationships between the Nile Delta coastal sands. Acta Mineralogica–Petrographica, 27, 89–100.Google Scholar
El Shazly, E.M., Kamel, A.F., Morsy, M.A. and Attia, S.H. (1986) Studies on beach and dune sands on the Mediterranean sea coast at El Messaid, west of El Arish, Sinai, Egypt. Egyptian Journal of Geology, 30, 1–8.Google Scholar
Förster, H.G. (1998) The chemical composition of REEY– Th–U–rich accessory minerals in peraluminous granites of the Erzgebirge–Fichtelgebirge region, Germany, Part I: The monazite–(Ce)–brabantite solid solution series. American Mineralogist, 83, 259–272.Google Scholar
Frihy, O.E. and Lotfy, M.F. (1997) Shoreline changes and beach–sand sorting along the northern Sinai coast of Egypt. Geo–Marine Letters, 17, 140–146.CrossRefGoogle Scholar
Garzanti, E., Andò, S., Vezzoli, G., Abdel Megid, A.A. and El Kammar, A. (2006) Petrology of Nile River sands (Ethiopia and Sudan): Sediment budgets and erosion patterns. Earth and Planetary Science Letters, 252, 327–341.CrossRefGoogle Scholar
González–Álvarez, I., Kusiak, M.A. and Kerrich, R. (2006) A trace element and chemical Th–U total Pb dating study in the lower Belt–Purcell Supergroup, western north America: Provenance and diagenetic implications. Chemical Geology, 230, 140–160.CrossRefGoogle Scholar
Greenberg, M., Wuzburger, U., Baklerm, N. and Nachmias, J. (1970) Black sands of the northern Sinai coast. Geological Survey of Israel Report, 517/70, 18 pp.Google Scholar
Haapala, I., Ervamaa, P., Löfgren, A. and Ojanperä, P. (1969) An occurrence of monazite in Puumala, eastern Finland. Bulletin of the Geological Society of Finland, 41, 117–124.CrossRefGoogle Scholar
Harlov, D.E., Wirth, R. and Hetherington, C.J. (2007) Replacement of monazite by a huttonite component: nature and experiment. American Mineralogist, 92, 1652–1664.Google Scholar
Hetherington, C.J. and Harlov, D.E (2007) Metasomatically induced formation of thorite and uraninite inclusions in xenotime and monazite from granite pegmatites, Hidra anorthosite massif, southwestern Norway: Mechanics and fluid chemistry. American Mineralogist, in press.CrossRefGoogle Scholar
Krenn, E. and Finger, F. (2007) Formation of monazite and rhabdophane at the expense of allanite during Alpine low–temperature retrogression of metapelitic basement rocks from Crete, Greece: Microprobe data and geochronological implications. Lithos, 95, 130–147.CrossRefGoogle Scholar
Kroepelin, S. (1987) Palaeoclimatic evidence from early to mid–Holocene playas in the Gilf Kebir (southwest Egypt). Pp. 189–208 in: Palaeoecology of Africa and Surrounding Islands (Coetzee, J.A., editor). 18, Balkema, Rotterdam, The Netherlands.Google Scholar
Kusiak, M.A., Ke˛dzior, A., Paszkowski, M., Suzuki, K., González–Álvarez, I., Wajsprych, B. and Doktor, M. (2006) Provenance implications of Th–U–Pb electron microprobe ages from detrital monazite in the Carboniferous Upper Silesia Coal Basin, Poland. Lithos, 88, 56–71.CrossRefGoogle Scholar
Linthout, K. (2007) Tripartite division of the system 2REEPO4–CaTh(PO4)2–2ThSiO4. Discreditation of brabantite, and recognition of cheralite as the name for members dominated by CaTh(PO4)2 . The Canadian Mineralogist, 45, 503–508.CrossRefGoogle Scholar
Mannucci, G., Diella, V., Grammaccioli, C.M. and Pilati, T. (1986) A comparative study of some pegmatitic and fissure monazite from the Alps. The Canadian Mineralogist, 24, 469–474.Google Scholar
Mariano, A.N. (1989) Economic geology of the rare earth elements. Pp. 309–337 in: Geochemistry and Mineralogy of Rare Earth Elements (Lipin, B.R., and Mckay, G.A., editors). Reviews in Mineralogy, 21, Mineralogical Society of America, Washington D.C. Google Scholar
Mohanty, A.K., Das, S.K., Vijayan, V., Sengupta, D. and Saha, S.K. (2003) Geochemical studies of monazite sands of Chhatrapur beach placer deposit of Orissa, India by PIXE and EDXRF method. Materials and Atoms, 211, 145–154.Google Scholar
Nagy, G., Draganits, E., Demény, A., Pantó, G. and Árkai, P. (2002) Genesis and transformations of monazite, florencite and rhabdophane during medium grade metamorphism: examples from the Sopron Hills, Eastern Alps. Chemical Geology, 191, 25–46.CrossRefGoogle Scholar
Nir, Y. (1982) Asia, Middle East, coastal morphology, Israel and Sinai. Pp. 86–98 in: Encyclopedia of Beaches and Coastal Environments (Schwartz, M., editor). Kluwer Academic Publishers, Amsterdam, The Netherlands.Google Scholar
Ondrejka, M., Uher, P., Prek, J. and Ozdín, D. (2007) Arsenian monazite–(Ce) and xenotime–(Y), REE arsenates and carbonates from the Tisovec–Rejkovo rhyolite, Western Carpathians, Slovakia: Composition and substitutions in the (REE, Y)XO4 system (X = P, As, Si, Nb, S). Lithos, 95, 116–129.CrossRefGoogle Scholar
Osmond, J.K., Dabous, A.A. and Dawood, Y.H., (1999) U series age and origin of two secondary uranium deposits, central Eastern Desert, Egypt. Economic Geology, 94, 273–280.CrossRefGoogle Scholar
Overstreet, W.C. (1967) The geological occurrence of monazite. U.S. Geological Survey Professional Paper, 530, 327.pp.Google Scholar
Pabst, A. and Hutton, C.O. (1951) Huttonite, a new thorium silicate. American Mineralogist, 36, 60–65.Google Scholar
Pik, R., Deniel, C., Coulon, C., Yirgu, G., Hoffmann, C. and Ayalew, D. (1998) The northwestern Ethiopian Plateauflood basalts: classification and spatial distribution of magma types. Journal of Volcanology and Geothermal Research, 81, 91–111.CrossRefGoogle Scholar
Pyle, J.M., Spear, F.S., Rudnick, R.L. and McDonough, W.F. (2001) Monazite–xenotime–garnet equilibrium in metapelites and a new monazite–garnet thermometer. Journal of Petrology, 42, 2083–2107.CrossRefGoogle Scholar
Said, R. (1981) The Geological Evolution of the River Nile. Springer–Verlag, New York, 151 pp.CrossRefGoogle Scholar
Seydoux–Guillaume, A., Wirth, R. and Ingrin, J. (2007) Contrasting response of ThSiO4 and monazite to natural irradiation. European Journal of Mineralogy, 19, 7–14.CrossRefGoogle Scholar
Shukri, N.M. (1950) The mineralogy of some Nile sediments. Journal of the Geological Society, 105, 511–534.Google Scholar
Shukri, N.M. and Phillip, G. (1960) The mineralogy of some recent deposits in the Arish–Gaza area. Bulletin of the Faculty of Science, Cairo University, 35, 73–85.Google Scholar
Spear, F.S. and Pyle, J.M. (2002) Apatite, monazite, and xenotime in metamorphic rocks. Pp. 293–335 in: Phosphates: Geochemical, Geo biological and Materials Importance (Kohn, M.J., Rakovan, J. and Hughes, J.M., editors). Reviews in Mineralogy and Geochemistry 48. Mineralogical Society of America, Washington, D.C. Google Scholar
Sroor, A. (2003) Passive and active measurements of Egyptian monazite samples. Technical note. Applied Radiation and Isotopes, 58, 281–285.CrossRefGoogle Scholar
Stanley, D.J., Sheng, H. and Kholief, M.M. (1979) Sand on the southern Mediterranean Ridge: Proximal basement and distal African Nile provenance. Nature, 279/5714, 594–598.CrossRefGoogle Scholar
Stanley, D.J., Sheng, H. and Pan, Y. (1988) Heavy minerals and provenance of Late Quaternary sands, Eastern Nile Delta. Journal of African Earth Science, 7, 735–741.CrossRefGoogle Scholar
Surour, A.A., El–Kammar, A.A., Arafa, E.H. and Korany, H.M. (2003) Dahab stream sediments, southeastern Sinai, Egypt: a potential source of gold, magnetite and zircon. Journal of Geochemical Exploration, 77, 25–43.CrossRefGoogle Scholar
Sutcliffe, J.V. and Parks, Y.P. (1999) The Hydrology of the Nile. Special Publication 5. International Association of Hydrologic Sciences (IAHS), 179 pp.Google Scholar
Tadesse, S., Milesi, J.P. and Deschamps, Y. (2003) Geology and potential of Ethiopia: a note on geology and mineral map of Ethiopia. Journal of African Earth Science, 36, 273–313.Google Scholar
Taylor, S.R. and McLennan, S.M. (1985) The Continental Crust: Its Composition and Evolution. Blackwell Science, Oxford, UK.Google Scholar
Townsend, K.J., Miller, C.F., D’Andrea, J.L., Ayers, J.C., Harrison, T.M. and Coath, C.D. (2000) Low temperature replacement of monazite in the Ireteba granite, Southern Nevada: geochronological implications. Chemical Geology, 172, 95–112.Google Scholar
Van Emden, B., Thornber, M.R., Graham, J. and Lincoln, F.J. (1997) The incorporation of actinides in monazite and xenotime from placer deposits in Western Australia. The Canadian Mineralogist, 35, 95–104.Google Scholar
Watt, G.R. (1995) High–thorium monazite–(Ce) formed during disequilibrium melting of metapelites under granulite–facies conditions. Mineralogical Magazine, 59, 735–743.CrossRefGoogle Scholar
Wendorf, F., Schild, R., Said, R., Haynes, V.C., Gautier, A. and Kobusiewicz, M. (1976) The prehistory of the Egyptian Sahara. Science, 193, 103–114.CrossRefGoogle Scholar
Williams, M.L., Jercinovic, M.J. and Hetherington, C.J. (2007) Microprobe monazite geochronology: Understanding geologic processes by integrating composition and chronology. Annual Review of Earth and Planetary Sciences, 35, 137–175.CrossRefGoogle Scholar
Wolfenden, E., Ebinger, C., Yirgu, G., Renne, P. and Kelley, S.P. (2005) Evolution of a volcanic rifted margin: Southern Red Sea, Ethiopia. Bulletin of the Geological Society of America, 117, 846–864.CrossRefGoogle Scholar
Yang, P. and Pattison, D. (2006) Genesis of monazite and Y zoning in garnet from the Black Hills, South Dakota. Lithos, 88, 233–253.CrossRefGoogle Scholar
Yang, S., Li, C. and Yokoyama, K. (2006) Elemental compositions and monazite age patterns of core sediments in the Changjiang Delta: Implications for sediment provenance and development history of the Changjiang River. Earth and Planetary Science Letters, 245, 762–776.CrossRefGoogle Scholar
Zhu, X.K. and O’Nions, R.K. (1999) Zonation of monazite in metamorphic rocks and its implications for high temperature thermochronology: a case study from the Lewisian terrain. Earth and Planetary Science Letters, 171, 209–220.CrossRefGoogle Scholar
Zhu, X.K., O’Nions, R.K., Belshaw, N.S. and Gibb, A.J. (1997) Significance of in situSIMS chronometry of zoned monazite from the Lewisian granulites, northwest Scotland. Chemical Geology, 135, 35–53.CrossRefGoogle Scholar