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Discovery of spherulitic dahllite associated with carbonates at Hamadat phosphorite mine, Qusseir, Central Eastern Desert, Egypt

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Abstract

Microscopical and mineralogical studies reveal first recorded spherulitic dahllite (3Ca 3 (PO4)2 Ca CO3) in the phosphorite rocks associated with carbonate rocks of Hamadat Mines (Duwi Formation) at Qusier area, Central Eastern Desert, Egypt. Mineralogically, the phosphatic rocks of Hamadat Mines are mainly consisting of fluor-apatite, dahllite, dolomite, calcite, quartz and pyrite. Petrographically, the studied dahllite in Hamadat Mines are authigenic in origin. Genetically, spherulitic dahllite at Hamadat Mines (Duwi Formation) in Qusier area is resulting from diagenesis processes; dolomitization and the re-crystallization process. Geochemical analysis of trace, rare earth elements and the petrogaphical is indicated that the phosphatic rocks are deposited under oxic to anoxic condition. Dolomitization process plays an important role in the concentration of trace and rare earth elements in the phosphatic rocks at Hamadat Mine. Dahllite layer has a relatively higher content in most of rare earth and some of the trace elements than those in the phosphate layer, which reveal that dahllite structure may be having the ability to scavenging them than the phosphatic construction. The chemical index of alteration (CIA), trace elements and La/Ce ratios pointed out that these phosphatic rocks were of hydrogenous origin deposited in cold and dry climate during low weathering. Finally, the hydroxial-apatite can be prepared to be used as a natural row material in the biological industry according to the chemical composition.

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References

  • Abou El-Anwar EA (2005) Petrography, geochemistry and genesis of the Upper Eocene carbonate terraces (II and III), Qasr El-Sagha Formation. El-Faiyum Egypt Sedimentol Egypt 13:243–260

    Google Scholar 

  • Abou El-Anwar EA (2006) Petrography, geochemistry and genesis of some Middle Eocene rocks at Qattamia area, Cairo-Suez Road Egypt. NRC Egypt 3(6):519–543

    Google Scholar 

  • Abou El-Anwar EA (2010) Petrographical, geochemical and environmental studies of the subsurface carbonate sediments of el-azima well, western samalut, samalut formation, el-minia Egypt. Sedimentol Egypt 18:98–100

    Google Scholar 

  • Abou El-Anwar EA (2011) Petrographical, geochemical and diagenetic studies of the middle eocene carbonates, mokattam formation of darb el-fayium area. (Int. Conf. on geological sciences and engineering, France. Paris. Augustus 80:1315–1325

    Google Scholar 

  • Abou El-Anwar EA (2012) Contribution to the composition and origin of the reef terraces in Ras Mohamed, Sharm El-Sheikh Coast, Southern Sinai. Egypt Egyp J of Geol 56:33–48

    Google Scholar 

  • Abou El-Anwar EA (2014) Composition and origin of the dolostones of um bogma formation lower carboniferous, west central Sinai, Egypt. Carbonates Evaporates 29:129–205. https://doi.org/10.1007/s13146-014-0188-3

    Article  Google Scholar 

  • Abou El-Anwar EA (2017) Mineralogical, petrographical, geochemical, diageneses and provenance of the cretaceous black shales duwi formation at Quseir-Safaga, Red Sea, Egypt, Egyptian. J Pet 26:915–926

    Google Scholar 

  • Abou El-Anwar EA (2019) Lithologic characterization of the phosphorite-bearing Duwi Formation (Campanian), South Esna, West Nile Valley, Egypt. Carbonates Evaporates 34:793–805. https://doi.org/10.1007/s13146-018-0442-1

    Article  Google Scholar 

  • Abou El-Anwar EA, Sadek MS (2008) Composition of black shale from Quseir, Red Sea, Egypt with emphasis on the sequential extraction of some metals Bull. NRC Egypt 32(5):511–536

    Google Scholar 

  • Abou El-Anwar EA, Mekky HS, Samy YM (2014) Contribution to the mineralogical, geochemical and provenance of the Cretaceous black shales, Duwi formation, Quseir- Safaga, Red Sea Coast Egypt. Egypt J Geol 58:303–322

    Google Scholar 

  • Abou El-Anwar EA, Mekky HS, Abd El Rahim SH, Aita SK (2017) Mineralogical, geochemical characteristics and origin of Late Cretaceous phosphorite in Duwi formation (Geble Duwi Mine) Red Sea region, Egypt, Egyptian. J Pet 26:157–169

    Google Scholar 

  • Abou El-Anwar EA, Abd El Rahim SH, Mekky HS (2019a) Spherulitic dahllite of Duwi formation phosphorite. Carbonates Evaporites 34:557–562. https://doi.org/10.1007/s13146-017-0377-y

    Article  Google Scholar 

  • Abou El-Anwar EA, Mekky HS, Abdel Wahab W (2019b) Geochemistry, mineralogy and depositional environment of black shales of the Duwi formation Qusseir area, Red Sea coast, Egypt. Carbonates Evaporites 34:883–892. https://doi.org/10.1007/s13146-017-0417-7

    Article  Google Scholar 

  • Ahmad F, Baioumy H, Farouk S, Al-Kahtany K, El-Sorogy A, Kirk J (2019) Geochemistry and stable isotopes of the upper Campanian-lower Maastrichtian phosphorite-bearing sequence, Central Jordan: implication s for their age, origin, and diagenesis. Geol J. https://doi.org/10.1002/gj.3692

    Article  Google Scholar 

  • Baioumy H, Tada R (2005) Origin of Late Cretaceous phosphorites in Egypt. Cretac Res 26:261–275

    Article  Google Scholar 

  • Dorozhkin SV (2010) Nanosized and nanocrystalline calcium orthophosphates. Acta Biomater 6:715–734

    Article  Google Scholar 

  • Eitel W (1924) Über Karbonatphosphate der Apatitgruppe. Schr. königsb. gelehrt. Ges., naturw. Kl.1:159–177

  • Fedo CM, Eriksson K, Krogstad EJ (1996) Geochemistry of shale from the Archean (~ 3.0 Ga) Buhwa greenstone belt, Zimbabwe: implications for provenance and source area weathering. Geochem Cosmic Acta 60(10):1751–1763

    Article  Google Scholar 

  • Germann K, Bock WD, Ganz H, Schröter T, Tröger U (1987) Depositional conditions of Late Cretaceous phosphorites and black-shales in Egypt. Berliner geowiss Abh 75(3):629–668

    Google Scholar 

  • Jones B, Manning DA (1994) Comparison of geochemical indices used for the interpretation of palaeoredox conditions in ancient mudstones. Chem Geol 111:111–129

    Article  Google Scholar 

  • Lacroix A (1910) Sur la constitution mineralogique des phosphorites francais. Compt rend 150:1213–1217. Lacroix Mineralogie France 4:555–558

    Google Scholar 

  • Loukina S, Abou El-Anwar EA (1991) Petrography, mineralogy and diagenesis of Gebel ataqa dolostones. EgyptJ Geol 35(1–2):133–145

    Google Scholar 

  • Lécuyer C, Reynard B, Grandjean P (2004) Rare earth element evolution of Phanerozoic seawater recorded in biogenic apatites. Chem Geol 204:63–102

    Article  Google Scholar 

  • McLennan SM (1993) Weathering and global denudation. J Geol 101(2):295–303

    Article  Google Scholar 

  • Nath BB, Pluger WL, Roelandts I (1997) Geochemical constraints on the hydrothermal origin of ferromanganese incrustations from the Rodriguez triple junction, Indian Ocean. In: Nicholson K, Hein JR, Bu¨hn B, Dasgupta S (Eds.), Manganese mineralization: geochemistry and mineralogy of terrestrial and marine deposits. Geol Soci Lond Spec Publ 119:199–211

  • Nesbitt HW, Young GM (1982) Early Proterozoic climates and plate motions inferred from major element chemistry of lutites. Nature 199:715–717

    Article  Google Scholar 

  • Nicholson K (1992) Contrasting mineralogical–geochemical signatures of manganese oxides: guides to metallogenesis. Econ Geol 87:1253–1264

    Article  Google Scholar 

  • Nowak GJ (2007) Comparative studies of organic matter, petrography of the late Paleozoic black shales from southwestern Poland. Inter J of Coal Geol 71(4):1–18

    Article  Google Scholar 

  • Pi DH, Jiang SY, Luo L, Yang JH, Hong-Fei Ling HF (2014) Depositional environments for stratiformwitherite deposits in the lower Cambrian black shale sequence of the Yangtze platform, southern Qinling region, SW China: evidence from redox-sensitive trace element geochemistry. Palaeogeogr Palaeoclimatol Palaeoecol 398:125–131

    Article  Google Scholar 

  • Rogers AF (1912) Dahllite (podolite) from Tonopah, Nevada, voelckerite a new calcium phosphate; remarks on the chemical composition of apatite and phosphate rock. Am J Sci 33:475–482

    Article  Google Scholar 

  • Rogers AF (1924) Mineralogy and petrography of fossil bone. Geol Soc Am Bull 35:549

    Article  Google Scholar 

  • Rogers AF, Kerr PF (1942) Optical mineralogy, 2nd edn. McGraw-Hill Book Company Inc, New York and London, p 390

    Google Scholar 

  • Rudnick RL, Gao S (2003) Composition of the continental crust. Treat Geochem 3:1–64. https://doi.org/10.1016/B0-08-043751-6/03016-4

    Article  Google Scholar 

  • Said R (1990) The geology of Egypt. Netherlands, A.A, Balkema, Rotterdam, p 734

    Google Scholar 

  • Sanz M, Daura J, Eguez N, Cabanes D (2015) On the track of anthropogenic activity in carnivore dens: altered combustion structures in Cova del Gegant (NE Iberian Peninsula). Quat Int 437(part:B):1–13

    Google Scholar 

  • Schieber J, Baird G (2001) On the origin and significance of pyrite spheres in Devonian black shale of North America. J Sediment Res 71(1):155–166

    Article  Google Scholar 

  • Sengul H, Ozer AK, Gulaboglu MS (2006) Benefication of Mardin-Mazidagi (Turkey) calcareous phosphate rock using dilute acetic acid solutions. Chem Eng J 122:135–140

    Article  Google Scholar 

  • Shi C, Cao J, Bao J, Zhu C, Jiang X, Wu M (2015) Source characterization of highly mature pyrobitumens using trace and rare earth element geochemistry: sinian-paleozoic paleo-oil reservoirs in south China. Org Geochem 83–84:77–93

    Article  Google Scholar 

  • Sholkovitz ER, Shaw TJ, Schneider DL (1992) The geochemistry of rare earth elements in the seasonally anoxicwater column and porewaters of Chesapeake Bay. Geochim Cosmochim Acta 56:3389–3402

    Article  Google Scholar 

  • Taylor SR, McLennan SM (1985) The continental crust: its composition and evolution. Blackwell, Oxford, 312p

  • Trueman CN, Tuross N (2002) Trace elements in recent and fossil bone apatite. Rev Mineral Geochem 48(1):489–521

    Article  Google Scholar 

Download references

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  1. Geological Sciences Department, National Research Centre, Dokki, Giza, Egypt

    Esmat A. Abou El-Anwar, Hamed S. Mekky & Said H. Abd El Rahim

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  1. Esmat A. Abou El-Anwar
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  2. Hamed S. Mekky
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  3. Said H. Abd El Rahim
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Correspondence to Esmat A. Abou El-Anwar.

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Abou El-Anwar, E.A., Mekky, H.S. & Abd El Rahim, S.H. Discovery of spherulitic dahllite associated with carbonates at Hamadat phosphorite mine, Qusseir, Central Eastern Desert, Egypt. Carbonates Evaporites 35, 106 (2020). https://doi.org/10.1007/s13146-020-00637-x

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