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

Arid

DOI	10.1111/1755-6724.13883
	Origin and Petrogenetic Implications of Spessartine Garnet in Highly-Fractionated Granite from the Central Eastern Desert of Egypt
	Sami, Mabrouk 1,2; Ntaflos, Theodoros 2; Mohamed, Haroun A.1; Farahat, Esam S.1; Hauzenberger, Christoph 3; Mahdy, Nasser M.4; Abdelfadil, Khaled M.5; Fathy, Douaa 1
通讯作者	Sami, Mabrouk
来源期刊	ACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN	1000-9515
EISSN	1755-6724
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 degrees C-591 degrees C) 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
国家	Egypt ; Austria
收录类别	SCI-E
WOS记录号	WOS:000544351300018
WOS关键词	SOUTH MOUNTAIN BATHOLITH ; LA-ICP-MS ; PERITECTIC GARNET ; MAGMATIC GARNET ; BEARING GRANITE ; TRACE-ELEMENT ; ABU DIAB ; U-PB ; GEOCHEMISTRY ; EVOLUTION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319366
作者单位	1.Menia Univ, Dept Geol, Fac Sci, El Minia 61519, Egypt; 2.Univ Vienna, Dept Lithospher Res, Althanstr 14, A-1090 Vienna, Austria; 3.Karl Franzens Univ Graz, Inst Mineral & Petr, Graz, Austria; 4.Nucl Mat Author, PO 530, Cairo, Egypt; 5.Sohag Univ, Dept Geol, Fac Sci, Sohag, 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-ENGLISH EDITION,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-ENGLISH EDITION 94.3(2020):763-776.