干旱区生态环境知识资源中心(Arid): Origin and Petrogenetic Implications of Spessartine Garnet in Highly-Fractionated Granite from the Central Eastern Desert of Egypt

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	Origin and Petrogenetic Implications of Spessartine Garnet in Highly-Fractionated Granite from the Central Eastern Desert of Egypt
	Sami Mabrouk; Ntaflos Theodoros; Mohamed Haroun A; Farahat Esam S; Hauzenberger Christoph; Mahdy Nasser M; Abdelfadil Khaled M; Fathy Douaa
来源期刊	Acta Geologica Sinica
ISSN	1000-9515
出版年	2020
卷号	94 期号:3 页码:763-776
英文摘要	A highly-fractionated garnet-bearing muscovite granite represents the marginal granitic facies of the Abu-Diab multiphase pluton in the Central Eastern Desert of Egypt. New electron microprobe analyses (EMPA) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) data from garnets are reported, in order to constrain their origin and genesis. Garnet in the Abu-Diab host granite is euhedral to subhedral, generally homogeneous and, in rare cases, it shows weak zonation. The garnet contains appreciable amounts of MnO and FeO, with lesser amounts of MgO and CaO, yielding an end-member formula of Sps_(61-72)Alm_(25-35)Prp_(1-4)Adr_(0-1). Moreover, it is depleted in large ion lithophile elements (LILE) with lower values of Ba, Nb and Sr relative to the primitive mantle. Additionally, it contains high concentrations of HREE and Y and their REE pattern shows strong negative Eu anomalies. The garnet was crystallized under relatively low temperature (646℃-591℃) and pressure (< 3 kbar) conditions. The textural and chemical features indicate that the garnet is magmatic in origin and is chemically similar to that from highly-fractionated A-type granite. It was probably formed at the expense of biotite in a highly-evolved MnO-rich magma and/or by hydroxyl complexing of Mn during the ascending fluid phases.
英文关键词	spessartine garnet LA-ICP-MS A-type granite Abu-Diab Egypt
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:6748297
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336302
作者单位	Sami Mabrouk, Geology Department,Faculty of Science,Minia University;;Department of Lithospheric Research,University of Vienna, ;;, El-Minia;;Althanstrasse, Egypt;;Austria 61519;;A-1090.; Ntaflos Theodoros, Department of Lithospheric Research,University of Vienna, Althanstrasse, A-1090, Austria.; Mohamed Haroun A, Geology Department,Faculty of Science,Minia University, El-Minia, 61519, Egypt.; Farahat Esam S, Geology Department,Faculty of Science,Minia University, El-Minia, 61519, Egypt.; Fathy Douaa, Geology Department,Faculty of Science,Minia University, El-Minia, 61519, Egypt.; Hauzenberger Christoph, Institute of Mineralogy and Petrology,Karl-Franzens University, Graz, Austria.; Mahdy Nasser M, Nuclear Materials Authority, Cairo, Egypt.; Abdelfadil Khaled M, Geology Department,Faculty of Science,Sohag University, Egypt.
推荐引用方式 GB/T 7714	Sami Mabrouk,Ntaflos Theodoros,Mohamed Haroun A,et al. Origin and Petrogenetic Implications of Spessartine Garnet in Highly-Fractionated Granite from the Central Eastern Desert of Egypt[J],2020,94(3):763-776.
APA	Sami Mabrouk.,Ntaflos Theodoros.,Mohamed Haroun A.,Farahat Esam S.,Hauzenberger Christoph.,...&Fathy Douaa.(2020).Origin and Petrogenetic Implications of Spessartine Garnet in Highly-Fractionated Granite from the Central Eastern Desert of Egypt.Acta Geologica Sinica,94(3),763-776.
MLA	Sami Mabrouk,et al."Origin and Petrogenetic Implications of Spessartine Garnet in Highly-Fractionated Granite from the Central Eastern Desert of Egypt".Acta Geologica Sinica 94.3(2020):763-776.