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Geochemical Constraints on Petrogenesis of Homrit Waggat Rare Metal Granite, Egypt

Research Abstract
The Homrit Waggat granite is a composite granite pluton intruded in metamorphosed volcano-sedimentary association and the metagabbro-diorite complex to the east and north and tonalite-granodiorite suite to the south and northeast. Mineralogically and geochemically the granite phases change from subsolvus peraluminous granodiorite to hypersolvus metaluminous and highly evolved alkali feldspar granite, passing through biotite and mylonitized biotite granites. Late to post-magmatic processes are represented by marginal stockscheider amazonite pegmatite, marginal amazonite albite as well as greisen zone up to 30 m2. Increasing of SiO2, alkalis, Rb, F, Nb, Ta, Sn, Ga, HREEs and Y, and decreasing of Fe, Al, Mg, Ca, Mn, Ti, Sr, Ba, Zr, and LREEs from the biotite granodiorite to hypersolvus alkali feldspar granite reflects magmatic fractionation processes of Homrit Waggat granite phases. LREEs fractionation patterns as well as Eu anomalies decrease from granodiorite to the alkali feldspar granite and the latter displays flat patterns. In the hypersolvus alkali feldspar granite, Ga/Al ratio is typically of A-type granite, but not their Zr, Y, or Ce enrichments. In addition, the hypersolvus granite is characterized by low-P2O5 and the LREEs>>HREEs depletion which reflects the initial undersaturation of accessory mineral assemblage that resulted from high concentration of volatiles and/or alkali complexes. The behaviour of REEs and Zr in the mentioned phases is consistent with F- content as well as accessory minerals in the studied granites. Trace elements pattern in the spider diagram show significant depletion in Sr, Ba, P and Ti, and enrichment in Rb, Th and U. The Sr, Ba, P and Ti depletion could be related to fractionation of plagioclase, apatite and ilmenite. Zircon saturation temperature (Tzr) calculated from bulk rock composition for Homrit Waggat granites range between 809°C and 765°C. These values are consistent with low temperature granite which crystallized from a source melt saturated with zirconium concentrations via partial melting of I- type granite magma may be granodioritic in composition. The highly evolved alkali feldspar granite was formed from the initial granodioritic I-type melt via fractional crystallization. F-rich melt and F-complexing played an important role in the evolution and chemical characterization of the highly evolved hypersolvus alkali feldspar granite. Four stages of mineralization were detected in the Homrit Waggat granite. These stages are magmatic, pegmatitic, metasomatic and veins. Columbite, cassiterite, fluorite as well as undifferentiated rare earth minerals are detected.
Research Authors
Hany H. El Hadek, Mohamed A. Mohamed, Galal H. El Habaak,Wagih W. Bishara, Kamal A. Ali
Research Department
Research Journal
International Journal of Geophysics and Geochemistry
Research Pages
33-48
Research Publisher
American Association for Science and Technology
Research Rank
1
Research Vol
(4)3
Research Website
http://www.aascit.org/journal/ijgg
Research Year
2016

Geochemical Constraints on Petrogenesis of Homrit Waggat Rare Metal Granite, Egypt

Research Abstract
The Homrit Waggat granite is a composite granite pluton intruded in metamorphosed volcano-sedimentary association and the metagabbro-diorite complex to the east and north and tonalite-granodiorite suite to the south and northeast. Mineralogically and geochemically the granite phases change from subsolvus peraluminous granodiorite to hypersolvus metaluminous and highly evolved alkali feldspar granite, passing through biotite and mylonitized biotite granites. Late to post-magmatic processes are represented by marginal stockscheider amazonite pegmatite, marginal amazonite albite as well as greisen zone up to 30 m2. Increasing of SiO2, alkalis, Rb, F, Nb, Ta, Sn, Ga, HREEs and Y, and decreasing of Fe, Al, Mg, Ca, Mn, Ti, Sr, Ba, Zr, and LREEs from the biotite granodiorite to hypersolvus alkali feldspar granite reflects magmatic fractionation processes of Homrit Waggat granite phases. LREEs fractionation patterns as well as Eu anomalies decrease from granodiorite to the alkali feldspar granite and the latter displays flat patterns. In the hypersolvus alkali feldspar granite, Ga/Al ratio is typically of A-type granite, but not their Zr, Y, or Ce enrichments. In addition, the hypersolvus granite is characterized by low-P2O5 and the LREEs>>HREEs depletion which reflects the initial undersaturation of accessory mineral assemblage that resulted from high concentration of volatiles and/or alkali complexes. The behaviour of REEs and Zr in the mentioned phases is consistent with F- content as well as accessory minerals in the studied granites. Trace elements pattern in the spider diagram show significant depletion in Sr, Ba, P and Ti, and enrichment in Rb, Th and U. The Sr, Ba, P and Ti depletion could be related to fractionation of plagioclase, apatite and ilmenite. Zircon saturation temperature (Tzr) calculated from bulk rock composition for Homrit Waggat granites range between 809°C and 765°C. These values are consistent with low temperature granite which crystallized from a source melt saturated with zirconium concentrations via partial melting of I- type granite magma may be granodioritic in composition. The highly evolved alkali feldspar granite was formed from the initial granodioritic I-type melt via fractional crystallization. F-rich melt and F-complexing played an important role in the evolution and chemical characterization of the highly evolved hypersolvus alkali feldspar granite. Four stages of mineralization were detected in the Homrit Waggat granite. These stages are magmatic, pegmatitic, metasomatic and veins. Columbite, cassiterite, fluorite as well as undifferentiated rare earth minerals are detected.
Research Authors
Hany H. El Hadek, Mohamed A. Mohamed, Galal H. El Habaak,Wagih W. Bishara, Kamal A. Ali
Research Department
Research Journal
International Journal of Geophysics and Geochemistry
Research Member
Research Pages
33-48
Research Publisher
American Association for Science and Technology
Research Rank
1
Research Vol
(4)3
Research Website
http://www.aascit.org/journal/ijgg
Research Year
2016

Geochemical Constraints on Petrogenesis of Homrit Waggat Rare Metal Granite, Egypt

Research Abstract
The Homrit Waggat granite is a composite granite pluton intruded in metamorphosed volcano-sedimentary association and the metagabbro-diorite complex to the east and north and tonalite-granodiorite suite to the south and northeast. Mineralogically and geochemically the granite phases change from subsolvus peraluminous granodiorite to hypersolvus metaluminous and highly evolved alkali feldspar granite, passing through biotite and mylonitized biotite granites. Late to post-magmatic processes are represented by marginal stockscheider amazonite pegmatite, marginal amazonite albite as well as greisen zone up to 30 m2. Increasing of SiO2, alkalis, Rb, F, Nb, Ta, Sn, Ga, HREEs and Y, and decreasing of Fe, Al, Mg, Ca, Mn, Ti, Sr, Ba, Zr, and LREEs from the biotite granodiorite to hypersolvus alkali feldspar granite reflects magmatic fractionation processes of Homrit Waggat granite phases. LREEs fractionation patterns as well as Eu anomalies decrease from granodiorite to the alkali feldspar granite and the latter displays flat patterns. In the hypersolvus alkali feldspar granite, Ga/Al ratio is typically of A-type granite, but not their Zr, Y, or Ce enrichments. In addition, the hypersolvus granite is characterized by low-P2O5 and the LREEs>>HREEs depletion which reflects the initial undersaturation of accessory mineral assemblage that resulted from high concentration of volatiles and/or alkali complexes. The behaviour of REEs and Zr in the mentioned phases is consistent with F- content as well as accessory minerals in the studied granites. Trace elements pattern in the spider diagram show significant depletion in Sr, Ba, P and Ti, and enrichment in Rb, Th and U. The Sr, Ba, P and Ti depletion could be related to fractionation of plagioclase, apatite and ilmenite. Zircon saturation temperature (Tzr) calculated from bulk rock composition for Homrit Waggat granites range between 809°C and 765°C. These values are consistent with low temperature granite which crystallized from a source melt saturated with zirconium concentrations via partial melting of I- type granite magma may be granodioritic in composition. The highly evolved alkali feldspar granite was formed from the initial granodioritic I-type melt via fractional crystallization. F-rich melt and F-complexing played an important role in the evolution and chemical characterization of the highly evolved hypersolvus alkali feldspar granite. Four stages of mineralization were detected in the Homrit Waggat granite. These stages are magmatic, pegmatitic, metasomatic and veins. Columbite, cassiterite, fluorite as well as undifferentiated rare earth minerals are detected.
Research Authors
Hany H. El Hadek, Mohamed A. Mohamed, Galal H. El Habaak,Wagih W. Bishara, Kamal A. Ali
Research Department
Research Journal
International Journal of Geophysics and Geochemistry
Research Pages
33-48
Research Publisher
American Association for Science and Technology
Research Rank
1
Research Vol
(4)3
Research Website
http://www.aascit.org/journal/ijgg
Research Year
2016

Geochemical and
fluid inclusions studies on fluorite mineralization at Homr Akarem and Homret Mikpid
granites, South Eastern Desert, Egypt

Research Abstract
NULL
Research Authors
Mohamed, M.A., El Habaak, G.H., Bishara, W.W., El Hadek, H.H
Research Department
Research Journal
Assiut University, Journal of Geology
Research Pages
19-33
Research Publisher
Faculty of Science, Assiut University
Research Rank
2
Research Vol
V. 40 (1)
Research Website
NULL
Research Year
2011

Geochemical and
fluid inclusions studies on fluorite mineralization at Homr Akarem and Homret Mikpid
granites, South Eastern Desert, Egypt

Research Abstract
NULL
Research Authors
Mohamed, M.A., El Habaak, G.H., Bishara, W.W., El Hadek, H.H
Research Department
Research Journal
Assiut University, Journal of Geology
Research Member
Research Pages
19-33
Research Publisher
Faculty of Science, Assiut University
Research Rank
2
Research Vol
V. 40 (1)
Research Website
NULL
Research Year
2011

Geochemical and
fluid inclusions studies on fluorite mineralization at Homr Akarem and Homret Mikpid
granites, South Eastern Desert, Egypt

Research Abstract
NULL
Research Authors
Mohamed, M.A., El Habaak, G.H., Bishara, W.W., El Hadek, H.H
Research Department
Research Journal
Assiut University, Journal of Geology
Research Pages
19-33
Research Publisher
Faculty of Science, Assiut University
Research Rank
2
Research Vol
V. 40 (1)
Research Website
NULL
Research Year
2011

Geochemical and
fluid inclusions studies on fluorite mineralization at Homr Akarem and Homret Mikpid
granites, South Eastern Desert, Egypt

Research Abstract
NULL
Research Authors
Mohamed, M.A., El Habaak, G.H., Bishara, W.W., El Hadek, H.H
Research Department
Research Journal
Assiut University, Journal of Geology
Research Member
Research Pages
19-33
Research Publisher
Faculty of Science, Assiut University
Research Rank
2
Research Vol
V. 40 (1)
Research Website
NULL
Research Year
2011

Effect of Barrier Height on Nuclear Fusion

Research Abstract
Abstract: The enhancement of sub-barrier fusion has been interpreted due to coupling between the relative motion and other degrees of freedom. The coupling gives rise to the distribution of fusion barriers and passage over the lowest barrier which is responsible for fusion enhancement at energies below the barrier. There are several orders of magnitude could be considered due to the tunneling through the barrier. The barrier height could be deduced from the measured cross section data for different energies, as well as using many empirical forms for incomplete and complete fusion of two massive nuclei. Firstly, we present a formula for barrier height (ODEFF)and check, over wide ranges of interacting pairs the percentage agreement with those calculated or measured values for all pairs within ZPZT≤ 3000. Secondly,the more recently measured excitation functions are studied using four models of nuclear forces , indicating that most of them can be used for wide energy range while the others failed to do so. We refer this notice to the theory deducing the model . For this, the 14 undertaken pairs recover the range 18 ≤ ZPZT ≤ 1320
Research Authors
G. S. Hassan - A. Abd-EL-Daiem - A. M. Mahmoud
Research Department
Research Journal
Journal of Applied Physics, IOSR
Research Member
Research Pages
8-16
Research Publisher
Journal of Applied Physics, IOSR
Research Rank
1
Research Vol
Vol. 9, No.
Research Website
NULL
Research Year
2017

Barrier Distributions in Heavy Ion Fusion

Research Abstract
Abstract:The term fusion barrier distribution provides a clear method to test the effect of nuclear structure on the behavior of nuclear matter and dynamics of nuclear reactions,especially for energies where penetrability effects are considered. It presents an unexpected enhancement, as compared with convent ional models of tunneling through a one-dimensional penetration model.The quantum mechanical barrier penetration effects play a central role, where the fusion cross section has been vanished suddenly as the bombarding energy becomes less than the barrier.We concluded that Wong form is the more exact and acceptable form to deduce the excitation functions as well as the barrier distribution for heavy ion fusion when concerning channel coupling and tunneling effects in comparison with the one dimension barrier penetration function.
Research Authors
G. S. Hassan
Research Department
Research Journal
IOSR Journal of Applied Physics (JAP - IOSR)
Research Member
Research Pages
, 26-30
Research Publisher
IOSR Journal of Applied Physics (JAP - IOSR)
Research Rank
1
Research Vol
Vol. 8, Issue 6
Research Website
NULL
Research Year
2016

Spectra of quark-antiquark bound states via two derived QCD potentials

Research Abstract
Abstract: In the current paper, we propose two types of quark-antiquar k( Q ̄ Q ) interactions, which may be tailored to describe various meson sectors. The interactions contain Quantum Chromodyn amics (QCD) inspired components, such as the Coulomb-like i nteraction, the confinement linear potential, and the spin-spin interac tion. Our scheme relies on the non-relativistic quark model through the introduction of two derived QCD potential models and the mat rix method numerical scheme. The application of the two prop osed potentials resulted in spectra for quark-antiquark bound s tates, which are compared with published experimental data . We found that one of the two potentials is favored over the other in terms of high precision comparisons. Keywords: Matrix method, Quarkonium, Charmonium, Heavy mesons, Radi al Schrdinger equation.
Research Authors
M. S. Ali,A. M. Yasser,G. S. Hassan and Ch. C. Moustakidis
Research Department
Research Journal
Quant. Phys. Lett.
Research Member
Research Pages
7-14
Research Publisher
Quant. Phys. Lett.
Research Rank
1
Research Vol
Vol. 5
Research Website
NULL
Research Year
2016
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