Hydrothermal alteration geochemistry of the Betam gold deposit, south Eastern Desert, Egypt: mass-volume-mineralogical changes and stable isotope systematics

References

• M. M. Abdel Tawab: 'Gold exploration in Egypt from Pharoanic to modern times', Zentralbl. Geol. Paläont., 1992, I, 2721–2733.
   Google Scholar
• A. M. Ahmed, M. M. Said, M. M. El Baghdady and G. Abdel Wahab: 'Mineral potential of the eastern part of Wadi Allaqi, South Eastern Desert, Egypt', Ann. Geol. Surv. Egypt, 2001, XXIV, 451–462.
   Google Scholar
• D. C. Almond, F. Ahmed and M. Z. Shaddad: 'Setting of gold mineralization in the northern red Sea hills of Sudan', Econ. Geol., 1984, 79, 389–392.
   Web of Science ®Google Scholar
• M. S. Amin: 'Geological features of some mineral deposits in Egypt', Bull Inst. Desert Egypt, 1955, 5, 208–239.
   Google Scholar
• N. Azer: 'Remarks on the origin of Precambrian mineral deposits in Egypt (U.A.R.)', Miner. Petrol, 1966, 11, (1-2), 41–64.
   Google Scholar
• P. B. Barton, Jr and B. J. Skinner: 'Sulfide mineral stabilities', in 'Geochemistry of hydrothermal ore deposits', (ed. H. L. Barnes), 278–403; 1979, New York, Wiley Intersci.
   Google Scholar
• P. B. Barton, Jr and P. Toulmin: 'The electrum-tarnish method for the determination of the fugacity of sulfur in laboratory sulfide system', Geochim. Cosmochim. Acta, 1964, 28, 619–640.
   Web of Science ®Google Scholar
• N. Sh. Botros: 'New prospects for gold mineralization in Egypt', Ann. Geol. Surv. Egypt, 1993, 19, 47–56.
   Google Scholar
• N. Sh. Botros: 'A new classification of the gold deposits of Egypt', Ore Geol. Rev., 2004, 25, 1–37.
   Web of Science ®Google Scholar
• P. Buchholz, P. Herzig, G. Friedrich and R. Frei: 'Granite-hosted gold mineralization in the Midlands greenstone belt: a new type of low-grade large scale gold deposit in Zimbabwe', Miner. Depos., 1998, 33, 437–460.
   Web of Science ®Google Scholar
• M. Cathelineau, M. C. Boiron, S. Essarraj, A. Barakat, F. Garcia Palomero, R. Urbano, J. M. Toyos, P. Florido, E. S. Pereira, C. Meireles, N. Ferreira, P. Castro, F. Noronha, A. Doria, M. A. Ribeiro, F. Barriga, A. Mateus, B. Yardley and D. Banks: 'Major structural factors of Au concentrations in the northwestern Iberian Massif (Spain-Portugal): a multidisciplinary and multiscale study', Proc. 2nd Biennial SGA Meet. on 'Current research in geology applied to ore deposits', (ed. P. F. Hach-Ali et al), 613–616; 1993, Granada, SGA.
   Google Scholar
• R. N. Clayton and T. K. Mayeda: 'The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis', Geochim. Cosmochim. Acta, 1963, 27, 43–52.
   Web of Science ®Google Scholar
• R. E. Criss, D. E. Champion and D. H. McIntyre: 'Oxygen isotope, aeromagnetic, and gravity anomalies associated with hydrother-many altered zones in the Yankee Fork mining district, Custer County, Idaho', Econ. Geol., 1985, 80, 1277–1296.
   Web of Science ®Google Scholar
• P. Eilu, C. Mathison, D. I. Groves and W. Allardyce: 'Atlas of alteration assemblages, styles and zoning in orogenic lode-gold deposits in a variety of host rock and metamorphic settings'; 1990, Geology and Geophysics Department and UWA Extension, the University of Western Australia, Publ.
   Google Scholar
• S. El Gaby, F. K. List and R. Tehrani: 'Geology, evolution and metallogenesis of the Pan-African Belt in Egypt', in 'The Pan-African belt of northeast Africa and adjacent areas', (ed. S. El Gaby and R. O. Greiling), 17–68; 1988, Braunschweiglwiesbaden, Friedr. Vieweg & Sohn.
   Google Scholar
• Y. H. El Kazzaz: 'Tectonics and Mineralization of Wadi Allaqi, south Eastern Desert, Egypt', PhD thesis, University of Luton, UK, 1995.
   Google Scholar
• Y. H. El Kazzaz: 'Shear zone-hosted gold mineralization in South Eastern Desert, Egypt', Proc. Geological Survey of Egypt Centennial Conf., Cairo, Egypt, November 1996, Argonne National Laboratory, 185–204.
   Google Scholar
• M. F. El Ramly, S. S. Ivanov and G. C. Kochin: 'The occurrence of gold in the Eastern Desert of Egypt', in 'Studies on some mineral deposits of Egypt', Vol. 21, 1–22; 1970, Geological Survey of Egypt.
   Google Scholar
• E. M. El Shazly: 'Classification of Egyptian mineral deposits', Egypt. J. Geol., 1957, 1, (1), 1–20.
   Google Scholar
• K. A. El Shimi: 'Geology, structure and Exploration of Gold Mineralization in Wadi Allaqi area, Eastern Desert, Egypt', Unpublished PhD thesis, Ain Shams University, Cairo, Egypt, 1996.
   Google Scholar
• A. E. J. Engel, R. N. Clayton and S. Epstein: Variations in isotopic composition of oxygen and carbon in Leadville Limestone (Mississippi, Colorado) and its hydrothermal and metamorphic phases', J. Geol., 1958, 66, 374–39.
   Web of Science ®Google Scholar
• M. W. Fenton: 'The Geochemistry and Petrology of Selected Lower Paleozoic Sedimentary Rocks from Victoria, Australia', Unpublished PhD thesis, University of Melbourne, Melbourne, Australia, 1987.
   Google Scholar
• M. S. Garson and I. Shalaby: 'Precambrian-lower Paleozoic plate tectonics and metallogenesis in the Red Sea region', Geol. Ass. Can. Special Paper, 1976, 14, 573–596.
   Google Scholar
• J. A. Grant: 'The isocon diagram — a simple solution to Gresens' equation for metasomatic alteration', Econ. Geol., 1986, 81, 1976–1982.
   Web of Science ®Google Scholar
• R. L. Gresens: 'Composition-volume relationships of metasoma-tism', Chem. Geol., 1967, 2, 47–65.
   Google Scholar
• D. I. Groves and R. P. Forster: 'Archean lode-gold deposits', in 'Gold metallogeny and exploration', (ed. R. P. Fortes), 63–103; 1991, Glasgow, Blackie.
   Google Scholar
• D. I. Groves, R. J. Goldfarb, M. Gebre-Mariam, S. Hagemann and F. Robert: 'Orogenic gold deposits: a proposed classification in the context of their crustal distribution and relationship to other gold deposit types', Ore Geo. Rev., 1998, 13, 7–28.
   Web of Science ®Google Scholar
• H. Z. Harraz: `Lithochemical prospecting and genesis of gold deposit in El Sukari gold mine, Eastern Desert, Egypt', PhD thesis, Faculty Science, Tanta University, Egypt, 1991.
   Google Scholar
• H. Z. Harraz: 'Wall rock alteration, Atud gold mine, Eastern Desert, Egypt: processes and P—T-Xcrn conditions of metasoma-tism', J. Afr. Earth Set, 1999, 20, 527–551.
   Google Scholar
• H. Z. Harraz and M. A. El Dahhar: 'Fluid—wallrock interaction and its implication in gold mineralization at the Umm Rus gold mine area, Eastern Desert, Egypt', Egypt. J. Geol., 1994, 38, 713–747.
   Google Scholar
• H. Z. Harraz, M. A. Hassanen and M. A. El Dahhar: 'Fluid inclusions and stable isotopic studies at El Sid gold mine, Eastern Desert, Egypt', Egypt. J. Geol., 1992, 36, 323–343.
   Google Scholar
• M. M. Hassaan and A. M. El Mezayen: 'Genesis of gold mineralization in Eastern Desert, Egypt', Al-Azhar Bull. Sci., 1995, 6, 921–939.
   Google Scholar
• H. A. Helba, K. I. Khalil and N. M. Abdou: 'Alteration patterns related to hydrothermal gold mineralization in meta-andesites at Dungash area, Eastern Desert, Egypt', Resource Geol., 2001, 51, 19–30.
   Web of Science ®Google Scholar
• H. M. Helmy, R. Kaindl, H. Fritz and J. Loizenbauer: 'The Sukari Gold Mine, Eastern Desert-Egypt: structural setting, mineralogy and fluid inclusion study', Miner. Depos., 2004, 39, 495–511.
   Web of Science ®Google Scholar
• R. W. Henley, A. H. Truesdell, P. B. Barton, Jr and J. A. Whitney: 'Fluid-mineral equilibria in hydrothermal systems', in 'Reviews in economic geology', Vol. 1, 267; 1984, El Paso, TX, Society of Economic Geologists.
   Google Scholar
• M. H. Hey: 'A new review of the chlorites', Miner. Mag., 1954, 30, 277–292.
   Google Scholar
• J. Hoefs: 'Stable isotope geochemistry'; 1997, Berlin, Springer.
   Google Scholar
• A. H. Hofstra and J. S. Cline: 'Characteristics and models for Carlin-type gold deposits', in 'Reviews in economic geology', (ed. S. G. Hagemann and P. E. Brown), Vol. 13, 163— 214; 2000, Littleton, CO, Society of Economic Geologists.
   Google Scholar
• W. F. Hume: 'The minerals of economic value associated with the intrusive Precambrian igneous rocks', Geol. Egypt, 1937, 3, 689–990.
   Google Scholar
• S. E. Humphris, J. C. Alt, D. A. H. Teagle and J. J. Honnorez: `Geochemical changes during hydrothermal alteration of basement in the stockwork beneath the active Tag hydrothermal mound' Proc. Conf. on 'Ocean drilling program, scientific results', (ed. P. M. Herzig et al), Vol. 158, 255–276, 1998, College Station, TX, Ocean Drilling Program.
   Google Scholar
• K. I. Khalil, H. A. Helba and A. Mucke: 'Genesis of the gold mineralization at the Dungash gold mine area, Eastern Desert, Egypt: a mineralogical—microchemical study', J. Afr. Earth ScL, 2003, 37, 111–122.
   Web of Science ®Google Scholar
• A. Kishida and R. Kerrich: 'Hydrothermal alteration zoning and gold concentration at the Kerr Addison Archean lode gold deposit, Kirkland Lake, Ontario', Econ. Geol., 1987, 82, 649–690.
   Web of Science ®Google Scholar
• E. L. Klein, C. Harris, A. Giret, C. A. V. Moura and R. S. Angelica: 'Geology and stable isotope (0, H, C, S) constraints on the genesis of the Cachoeira gold deposit, Gurupi Belt, northern Brazil', Chem. Geol., 2005, 221, 188–206.
   Web of Science ®Google Scholar
• D. Klemm, R. Klemm and A. Murr: 'Gold of the Pharaohs-6000 years of gold mining in Egypt and Nubia', Afr. Earth Set, 2001,33, 643–659.
   Web of Science ®Google Scholar
• J. Kolb, A. F. M. Kisters, S. Hoernes and F. M. Meyer: 'The origin of fluids and nature of fluid—rock interaction in auriferous mylonites of the Renco Mine, southern Zimbabwe', Miner. Depos., 2000, 35, (1), 109–125.
   Google Scholar
• P. Kranidiotis and W. H. McLean: 'Systematics of chlorite alteration at the Phelps Dodge massive sulfide deposit, Matagami, Quebec', Econ. Geol., 1987, 82, 1898–1911.
   Web of Science ®Google Scholar
• U. Kretschmar and S. D. Scott: 'Phase relations involving arsenopyrite in the system Fe—As—S and their application', Can. Miner., 1976, 14, 364–386.
   Google Scholar
• A. Krfiner, R. Greiling, T. Reischmann, I. M. Hussein, R. J. Stern, S. Durr, J. Kruger and M. Zimmer: 'Pan-African crustal evolution in the Nubian segment of Northeast Africa', Am. Geophys. Union Spec. PubL, 1987, 17, 235–257.
   Google Scholar
• T. M. Kusky and T. M. Ramadan: 'Structural controls on Neoproterozoic mineralization in the South Eastern Desert, Egypt: an integrated field, Landsat TM, and SIR-C/X SAR approach', J. Afr. Earth ScL, 2002, 35, (1), 107–121.
   Web of Science ®Google Scholar
• C. H. B. Leitch and D. R. Lentz: 'The Greisen approach to mass balance constraonts of alteration systems: methods: Pitfalls and examples', in 'Alteration and alteration processes associated with ore-forming systems', (ed. D. R. Lentz), Vol. II, 161–192, 1994, Waterloo, Geological Society of Canada.
   Google Scholar
• C. Meyer and J. J. Hemley: 'Wall rock alteration', in 'Geochemistry of hydrothermal ore deposits', (ed. H. L. Barnes), 166–235; 1967, New York, Holt, Rinehart and Winston.
   Google Scholar
• E. J. Mikucki and J. R. Ridley: 'The hydrothermal fluid of Archaean lode-gold deposits at different metamorphic grades: compositional constraints from ore and wall rock alteration assemblages', Miner. Depos., 1993, 28, 469–481.
   Web of Science ®Google Scholar
• R. F. Mueller and S. K. Saxena: 'Chemical petrology, with application to the terrestrial planets and meteorites', 396; 1977, New York, Springer-Verlag.
   Google Scholar
• V. H. W. Neubauer: `Geologie der Goldlagerstaette von El Sid in Oberaegypten mit einem Beitrag zur Geologie der zentralen Arabischen Wueste', Geol. Jahrb., 1962, 80, 117–160.
   Google Scholar
• F. Noronha, M. Cathelineau, M. C. Boiron, D. A. Banks, A. Doria, M. A. Ribeiro, P. Nogueira and A. Guedes: 'A three-stage fluid flow model for Variscan gold metallogenesis in northern Portugal', J. Geochem. Explor., 2000, 71, 209— 224.
   Web of Science ®Google Scholar
• H. Ohmoto: 'Stable isotope geochemistry of ore deposits', Rev. Miner. Geochem., 1986, 16, (1), 491–559.
   Google Scholar
• H. Ohmoto and R. O. Rye: 'Isotopes of sulfur and carbon', in 'Geochemistry of hydrothermal ore deposits', (ed. H. L. Barnes), 2nd edn, 509–567; 1979, New York, John Wiley & Sons.
   Google Scholar
• A. Osman and A. Dardir: 'On the mineralogy and geochemistry of some gold-bearing quartz veins in the central Eastern Desert of Egypt and their alteration wall rocks', Ann. Geol. Surv. Egypt, 1989, 16, 17–25.
   Google Scholar
• C. W. Passchier and R. A. J. Trouw: `Microtectonics', 289; 1996, Berlin, Springer.
   Google Scholar
• G. N. Phillips and D. I. Groves: 'The nature of Archaean gold bearing fluids as deduced from gold deposits of Western Australia', Geol. Soc. Austr. J., 1983, 30, 25–40.
   Web of Science ®Google Scholar
• W. Pohl: 'Precambrian metallogeny of NE-Africa', in 'The pan-African belt of NE Africa and adjacent areas', (ed. S. El Gaby and R. O. Greiling)', 319–341; 1988, Wiesbaden, Earth Evolution Sci. (Vieweg).
   Google Scholar
• M. H. Reed: 'Hydrothermal alteration and its relationship to ore fluid composition', in 'Geochemistry of hydrothermal ore deposits', (ed. H. L. Barnes), 303–365; 1997, New York, John Wiley & Sons, Inc.
   Google Scholar
• A. W. Rose and D. M. Burt: 'Hydrothermal alteration', in 'Geochemistry of hydrothermal ore deposits', (ed. H. L. Barnes), 173–235; 1979, New York, John Wiley & Sons.
   Google Scholar
• R. O. Rye and H. Ohmoto: 'Sulfur and carbon isotopes and ore genesis: A review', Econ. Geol., 1974, 69, 826–842.
   Web of Science ®Google Scholar
• A. H. Sabet, V. B. Tscogoev, V. P. Bondonosov, L. M. Babourin, A. A. Zalata and M. H. Francis: 'On gold mineralization in the Eastern Desert of Egypt', Ann. Geol. Surv. Egypt, 1976,6, 201–212.
   Google Scholar
• S. M. Savin and S. Epstein: 'Oxygen and hydrogen isotope variations in sedimentary rocks and minerals', Special Paper 101, Geological Society of America, 1968, 190.
   Google Scholar
• S. D. Scott: 'Chemical behaviour of sphalerite and arsenopyrite in hydrothermal and metamorphic environments', Miner. Mag., 1983, 47, 427–435.
   Web of Science ®Google Scholar
• J. Selverstone, G. Morteani and J. M. Staude: 'Fluid channeling during ductile shearing: transformation of granodiorite into aluminous schist in the Tauern Window, Eastern Alps', J. Metam. Geol., 1991,9, 419–431.
   Web of Science ®Google Scholar
• N. A. Sharara: 'Stable isotopes and fluid inclusions of the gold mineralization at El Sukari District, central Eastern Desert, Egypt: genetic constraints', Proc. 4th Conf. on 'Geochemistry', 317–339; 1999, Alexandria, Alexandria University.
   Google Scholar
• M. Stein and S. I. Goldstein: 'From plume head to continental lithosphere in the Arabian-Nubian Shield', Nature, 1996, 382, 773–778.
   Web of Science ®Google Scholar
• N. J. Susak: 'Alteration factors affecting ore deposition', in 'Alteration and alteration processes associated with ore-forming systems', (ed. D. R. Lenz), 115–130; 1994, St. John's, Geologic Association of Canada.
   Google Scholar
• M. A. Takla, A. A. El Dougdoug, M. A. Gad, A. H. Rasmay and H. K. El Tabbal: 'Gold-bearing quartz veins in mafic and ultramafic rocks, Hutite and Um Tenedba, south Eastern Desert, Egypt', Ann. Geol. Surv. Egypt, 1995, 20, 411–432.
   Google Scholar
• H. P. Taylor, Jr: '180/160 evidence for meteoric-hydrothermal alteration and ore deposition in the Tonopah, Comstock lode, and Goldfield mining districts, Nevada', Econ. Geol., 1973, 68, 747–764.
   Web of Science ®Google Scholar
• H. P. Taylor, Jr: 'The application of oxygen and hydrogen isotope studies to problems of hydrothermal alteration and ore deposition', Econ. Geol., 1974, 69, 843–883.
   Web of Science ®Google Scholar
• UNDP compilation report: 'Document no. 6/87 in the Egyptian Geological Survey and Mining Authority (EGSMA)', Cairo, Egypt, 1986.
   Google Scholar
• B. A. Zoheir: 'Gold mineralization in the Um El Tuyor area, South Eastern Desert, Egypt: geologic context, characteristics and genesis', PhD Thesis, Ludwig-Maximilians-Universität München, Germany, 2004.
   Google Scholar
• B. A. Zoheir: 'Structural controls, temperature-pressure conditions and fluid evolution of orogenic gold mineralisation in Egypt: a case study from the Betam gold mine, south Eastern Desert', Miner. Depos., 2008. 43, 79–95.
   Web of Science ®Google Scholar
• B. A. Zoheir and D. D. Klemm: 'The tectono-metamorphic evolution of the central part of the Neoproterozoic Allaqi-Heiani suture, south Eastern Desert of Egypt', Gondwana Res., 2007, 12, 289–304.
   Web of Science ®Google Scholar