Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt
Beryl occurs in the ancient Roman mines at Wadi Nugrus, South Eastern Desert of Egypt. It ranges from small crystals to 10 mm in size, and it varies in color, appearing as bright green, pale green, dark green and brown-green with biotite inclusions. The trace and minor elements were analyzed by the...
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MDPI AG
2022-02-01
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| author | Ahmed E. Abdel Gawad Antoaneta Ene Sergey G. Skublov Alexandra K. Gavrilchik Mohamed A. Ali Mohamed M. Ghoneim Aleksey V. Nastavkin |
| author_facet | Ahmed E. Abdel Gawad Antoaneta Ene Sergey G. Skublov Alexandra K. Gavrilchik Mohamed A. Ali Mohamed M. Ghoneim Aleksey V. Nastavkin |
| author_sort | Ahmed E. Abdel Gawad |
| collection | DOAJ |
| description | Beryl occurs in the ancient Roman mines at Wadi Nugrus, South Eastern Desert of Egypt. It ranges from small crystals to 10 mm in size, and it varies in color, appearing as bright green, pale green, dark green and brown-green with biotite inclusions. The trace and minor elements were analyzed by the SIMS method. The two rims are richer in Cs, Na, Mg, Fe, Sc, V, Rb and H<sub>2</sub>O than cores but are poor in Mn, Ca, Co, Sr and Li. The bright-green rim is richer than the pale-green one in Na, P, K, Ca, Fe, Rb, Cs and F, but poorer in Mg and Li. The alkaline elements (Cs, Na, Rb) and Fe correlate with the color zoning, and where beryl crystals have a maximum of these elements, the green color is strong and bright. The emerald of Wadi Nugrus has similarities with the geological setting of the Canadian emeralds. Emeralds occur along the contact zone between biotite schists, pegmatites and quartz veins. A large-scale interaction between Be-bearing magmatic fluids from granites and related pegmatites took place with hydrothermal fluids enriched in Cr, V, Sc, Mg and Ca after percolation through pre-existing serpentinite and talc carbonates, metagabbros and biotite schists and additional fluids bearing H<sub>2</sub>O, NaCl and CO<sub>2</sub>. |
| first_indexed | 2024-03-09T21:22:16Z |
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| language | English |
| last_indexed | 2024-03-09T21:22:16Z |
| publishDate | 2022-02-01 |
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| record_format | Article |
| series | Minerals |
| spelling | doaj.art-f50efcf7bd6b42d4b1aa4fe368ea86802023-11-23T21:18:31ZengMDPI AGMinerals2075-163X2022-02-0112220610.3390/min12020206Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, EgyptAhmed E. Abdel Gawad0Antoaneta Ene1Sergey G. Skublov2Alexandra K. Gavrilchik3Mohamed A. Ali4Mohamed M. Ghoneim5Aleksey V. Nastavkin6Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, EgyptINPOLDE Research Center, Department of Chemistry, Faculty of Sciences and Environment, Physics and Environment, Dunarea de Jos University of Galati, 47 Domneasca Street, 800008 Galati, RomaniaInstitute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, 199034 St. Petersburg, RussiaSaint-Petersburg Mining University, 21-ya Liniya 2, 199106 St. Petersburg, RussiaNuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, EgyptNuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, EgyptInstitute of Earth Sciences, Southern Federal University, 344006 Rostov-on-Don, RussiaBeryl occurs in the ancient Roman mines at Wadi Nugrus, South Eastern Desert of Egypt. It ranges from small crystals to 10 mm in size, and it varies in color, appearing as bright green, pale green, dark green and brown-green with biotite inclusions. The trace and minor elements were analyzed by the SIMS method. The two rims are richer in Cs, Na, Mg, Fe, Sc, V, Rb and H<sub>2</sub>O than cores but are poor in Mn, Ca, Co, Sr and Li. The bright-green rim is richer than the pale-green one in Na, P, K, Ca, Fe, Rb, Cs and F, but poorer in Mg and Li. The alkaline elements (Cs, Na, Rb) and Fe correlate with the color zoning, and where beryl crystals have a maximum of these elements, the green color is strong and bright. The emerald of Wadi Nugrus has similarities with the geological setting of the Canadian emeralds. Emeralds occur along the contact zone between biotite schists, pegmatites and quartz veins. A large-scale interaction between Be-bearing magmatic fluids from granites and related pegmatites took place with hydrothermal fluids enriched in Cr, V, Sc, Mg and Ca after percolation through pre-existing serpentinite and talc carbonates, metagabbros and biotite schists and additional fluids bearing H<sub>2</sub>O, NaCl and CO<sub>2</sub>.https://www.mdpi.com/2075-163X/12/2/206berylSIMS methodtrace element geochemistryzoningWadi NugrusEgypt |
| spellingShingle | Ahmed E. Abdel Gawad Antoaneta Ene Sergey G. Skublov Alexandra K. Gavrilchik Mohamed A. Ali Mohamed M. Ghoneim Aleksey V. Nastavkin Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt Minerals beryl SIMS method trace element geochemistry zoning Wadi Nugrus Egypt |
| title | Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt |
| title_full | Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt |
| title_fullStr | Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt |
| title_full_unstemmed | Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt |
| title_short | Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt |
| title_sort | trace element geochemistry and genesis of beryl from wadi nugrus south eastern desert egypt |
| topic | beryl SIMS method trace element geochemistry zoning Wadi Nugrus Egypt |
| url | https://www.mdpi.com/2075-163X/12/2/206 |
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