干旱区生态环境知识资源中心(Arid): Pan-African rare metals bearing pegmatites in Wadi Ghadir, South Eastern desert, Egypt: the geochemical evolution and implications for mineralization

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DOI	10.1007/s42452-021-04414-w
	Pan-African rare metals bearing pegmatites in Wadi Ghadir, South Eastern desert, Egypt: the geochemical evolution and implications for mineralization
	Kamar, Mohamed S.; Moghazy, Nasser M.; Saleh, Gehad M.
通讯作者	Moghazy, NM (corresponding author), Nucl Mat Author, POB 530, Cairo, Egypt.
来源期刊	SN APPLIED SCIENCES
ISSN	2523-3963
EISSN	2523-3971
出版年	2021
卷号	3 期号:4
英文摘要	Quartz-diorites, monzogranites and pegmatites are the main rock units in the studied area. The pegmatites occur as zoned pockets within monzogranites with zonal arrangement: border, wall, intermediate, and core zones. The wall zone have enrichment of radioactive and RREs-bearing minerals. K-feldspar, plagioclase and quartz are essential minerals, whereas uranothorite, columbite, zircon, xenotime, monazite, sphalerite and pyrite are accessories. Geochemically, the pegmatites of W. Ghadir have peraluminous character, ferroan with alkalic-calcic affinity and emplaced in within plate setting. These pegmatites revealed Li-bearing variety and high level of rare earth elements mineralization. The studied pegmatites exhibit high contents of Li, Nb, Cu, Ta, U, Th, Pb, Zr, Zn and Ga, can be from the previous data, the studied pegmatites can be classified as a Niobium-Yttrium-Fluorine (NYF) pegmatite or rare metal pegmatite. The trace elements ratio supports a low degree of fractionation and metasomatism in the evolutionary history of the pegmatites, and the very low Cs values (2.2-4.3 ppm) indicate paucity of alkali metal fractionation. Spectrometric investigation revealed that monzogranites are not uraniferous, while the radioactive anomaly is confined to the pegmatites. Applying the U mobilization equation proved that pegmatite samples have been originated from a late magmatic phase of magma very rich in radioelements, and the pegmatites affected with hydrothermal solutions rich in uranium than thorium which indicates uranium addition. Radioactive and important heavy minerals are represented by uranothorite, columbite, zircon, monazite, xenotime, sphalerite and pyrite.
英文关键词	Rare Metals Pegmatite Geochemistry W Ghadir Eastern Desert Uranium Egypt
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	ESCI
WOS记录号	WOS:000626968300005
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352966
作者单位	[Kamar, Mohamed S.; Moghazy, Nasser M.; Saleh, Gehad M.] Nucl Mat Author, POB 530, Cairo, Egypt
推荐引用方式 GB/T 7714	Kamar, Mohamed S.,Moghazy, Nasser M.,Saleh, Gehad M.. Pan-African rare metals bearing pegmatites in Wadi Ghadir, South Eastern desert, Egypt: the geochemical evolution and implications for mineralization[J],2021,3(4).
APA	Kamar, Mohamed S.,Moghazy, Nasser M.,&Saleh, Gehad M..(2021).Pan-African rare metals bearing pegmatites in Wadi Ghadir, South Eastern desert, Egypt: the geochemical evolution and implications for mineralization.SN APPLIED SCIENCES,3(4).
MLA	Kamar, Mohamed S.,et al."Pan-African rare metals bearing pegmatites in Wadi Ghadir, South Eastern desert, Egypt: the geochemical evolution and implications for mineralization".SN APPLIED SCIENCES 3.4(2021).