Mineralogical and geochemical investigation of emerald and beryl mineralisation, Pan-African Belt of Egypt: Genetic and exploration aspects

Journal of African Earth Sciences

Volumn 28, Issue 3, 1999, Pages 581-598

  Abdalla, H M ^a   Mohamed, F H ^b  

^a NUCLEAR MATERIALS AUTHORITY   (Egypt)

^b NONE

Author keywords

[No Author keywords available]

Indexed keywords

BERYL; EMERALD; GRANITE; METASOMATISM; MINERALIZATION; PETROGENESIS;

EGYPT;

EID: 0033117052     PISSN: 08995362     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0899-5362(99)00033-0     Document Type: Article

References (38)

1. Abdalla, H.M., Ishihara, S., Matsueda, H., Abdel-Monem, A.A., 1996. On the albite-enriched granitoids at Um Ara area, Southeastern Desert, Egypt. I) Geochemical, ore potentiality and fluid inclusion studies. Journal Geochemical Exploration 58, 127-138.
2. Aurisicchio, C., Fioravanti, O., Grubessi, O., Zanazzi, P.F., 1988. Reappraisal of the crystal chemistry of beryl. American Mineralogists 73, 826-837.
3. Beus, A.A., Dikov, Yu.P., 1967. Geochemistry of beryllium in the endogenous mineral-forming processes. Nedra, Moscow, 112p.
4. Beus, A.A., Severov, E.A., Sitnin, A.A., Subbotin, K.D., 1962. Albitized and greisenized granites (apogranites) (in Russian). Academy Science Press, Moscow, 196p.
5. Beus, A.A., Sobolev, B.P., Dikov, Yu.P., 1963. Geochemistry of beryllium in high temperature postmagmatic mineralization. Geochemistry 3, 316-323.
6. 2-NaCl fluids at high pressures and temperatures. Geochemica Cosmochimca Acta 47, 1247-1275.
7. Burt, D.M., 1981. Acidity-salinity diagrams-Application to greisen and porphyry deposits. Economic Geology 76, 832-843.
8. El Biyoumi, R., Greilling, R., 1984. Tectonic evolution of a Pan-African plate margin in Southeastern Egypt-A suture zone overprinted by low angle thrusting. In: Klerkx, J., Michot, J. (Eds.), African Geology. Tervuren Belgium, pp. 47-56.
9. El Shazly, E.M., Hassan, M.A., 1972. Geology and radioactive mineralization at Wadi Sikait-Wadi El-Gemal area, Eastern Desert. Egyptian Journal Geology 16, 201-234.
10. Fersman, A.E., 1929. Geochemische migration der element. Abh. Parkt. Geologie Bergwirtschaftlehre, 18, 74-116.
11. Franz, G., Grundmann, G., Ackermand, D., 1986. Rock-forming beryl from a regional metamorphic terrain (Tauern window, Austria). Tschermaks Mineralogische Petrographische Mitteilungen 35, 167-192.
12. Geological Survey Egypt, 1978. Geological Map of the Aswan Quadrangle. Geological Survey Egypt, Cairo, scale 1:500 000.
13. 18. Lithos 1, 275-285.
14. Giuliani, G., Silva, L.J.H., Couto, P., 1990. Origin of emerald deposits of Brazil. Mineralium Deposita 25, 57-64.
15. Greiling, R.O., 1990. Structural and geological map of the Wadi Hafafit area. TFH, Berlin, scale 1:100 000.
16. Greiling, R.O., Kroener, A., El Ramly, M.F., Rashwan, A.A., 1987. Structural relationships between the southern and central parts of the Eastern Desert of Egypt: details of a fold and thrust belt. In: El Gaby, S., Greiling, R. (Eds.), The Pan-African belt of NE Africa and adjacent areas-tectonic evolution and economic aspects of a Late Proterozoic orogen. Vieweg, Wiesbaden, pp. 121-145.
17. Grundmann, G., Morteani, G., 1989. Emerald mineralization during regional metamorphism: the Habachtal (Austria) and Leydsdrorp (Transvaal, South Africa) deposits. Economic Geology 84, 1853-1849.
18. Grundmann, G., Morteani, G., 1993. Emerald formation during regional metamorphism: the Zabara, Sikeit and Um Kabu deposits (Eastern Desert, Egypt). In: Thorweihe, U., Schandelmeier, H. (Eds.), Geoscientific research in Northeast Africa. Balkema, Rotterdam, pp. 495-498.
19. Hannah, J.L., Stein, H.J., 1990. Magmatic and hydrothermal processes in ore-bearing systems. In: Stein, H., Hannah, J. (Eds.), Ore-bearing granite systems; petrogenesis and mineralizing processes. Geological Society America, Special Paper 246, 1-10.
20. Helba, H., Trumbull, R.B., Morteani, G., Khalil, S.O., Arslan, A., 1997. Geochemical and petrographical studies of Ta mineralization in the Nuweibi albite granite complex, Eastern Desert, Egypt. Mineralium Deposita 32, 164-179.
21. 4 en dessous de 50°C et de 100 bar. Application aux inclusions fluides. Comptes Rendus Academie Sciences (Paris), Séries II 294, 203-206.
22. Kanisawa, S., 1978. Fluorine determination in silicate rocks using a specific ion electrode. Journal Japanese Association Mineralogists, Petrologists Economic Geologists 73, 26-29.
23. Kovalenko, V.I., Antipin, V.S., Petrov, L.L., 1977. Distribution coefficients of Be in ongonites and some notes on its behavior in the rare metal lithium-fluorine granites. Geochemistry International 14(4), 129-141.
24. Manning, D.A.C., 1981. The effect of fluorine on liquidus phase relationships in the system Qz-Ab-Or with exess water at 1 kb. Contribution Mineralogy Petrology 76, 206-215.
25. Martin, J.S., 1983. An experimental study of the effects of lithium on the granite system. Proceeding Ussher Society 5(4), 417-420.
26. Mohamed, F.H., 1993. Rare metal-bearing and barren granites, Eastern Desert of Egypt: geochemical characterization and metallogenetic aspects. Journal African Earth Sciences 17, 525-539.
27. Mohamed, F.H., Hasanen, M.A., 1997. Geochemistry and petrogenesis of Sikait leucogranite, Egypt: an example of S-type granite in a metapelitic sequence. Geologische Rundschau 86, 81-92.
28. Morsey, M.A., Mohamed, F.H., 1992. Geochemical chracteristics and petrogenetic aspects of Muelha tin-specialized granite, Eastern Desert, Egypt. Bulletin Faculty Sciences, Alexandria University 32A, 502-515.
29. Pollard, P.J., 1983. Magmatic and postmagmatic processes in the formation of rocks associated with rare-element deposits. Transactions Institution Mining Metallurgy (Section B, Applied Earth Science) 92, 1-9.
30. Pollard, P.J., Taylor, R.G., 1986. Progressive evolution of alteration and tin mineralisation: Controls by interstitial permeability and fracture-related trapping of magmatic fluid reservoirs in tin granites. Economic Geology 81, 1795-1800.
31. Ries, A.C., Shackleton, R.M., Graham, R.H., Fitches, W.R., 1983. Pan-African structures, ophiolites and Melange in the Eastern Desert of Egypt: a traverse at 26°N. Journal Geological Society London 140, 75-95.
32. Roeder, E., 1977. Fluid inclusions as tools in mineral exploration. Economic Geology 72, 503-525.
33. Sakurai, T., 1967. Universal crystallographic computation program system (1). Crystallographic Society of Japan, Tokyo University, Hongo Bunkyoku, Japan, 25p.
34. Scherba, G.N., 1970. Greisens. International Geology Review 12, 114-150 and 239-250.
35. Schwartz, M.O., 1992. Geochemical criteria for distinguishing magmatic and metasomatic albite-enrichment in granitoids -examples from the Ta-Li granite Yichun (China) and the Sn-W deposit Tikus (Indonesia). Mineralium Deposita 27, 101-108.
36. Shinkankas, J., 1981. Emerald and other beryls. Chilton Book Co., Randnor, Pennsylvania, 647p.
37. Stern, R.G., Hedge, C.E., 1985. Geochronologic and isotopic constraints on Late Precambrian crustal evolution in the Eastern Desert of Egypt. American Journal Science 285, 97-127.
38. Zalata, A.A, Abu Eleil, I., Khalaf, I. and others, 1973. On the results of prospecting for gold and rare metals in the areas of Wadi Mueilha, Shait, Tundeba, and Gemal in 1972-1973. Internal Report. Egyptian Geological Survey, 85p.