干旱区生态环境知识资源中心(Arid): Geology and genesis of vein-type corundum deposits in the Hafafit-Nugrus area, South Eastern Desert, Egypt

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DOI	10.2478/logos-2020-0018
	Geology and genesis of vein-type corundum deposits in the Hafafit-Nugrus area, South Eastern Desert, Egypt
	Mahmoud, Soliman Abu Elatta A.; Ali, Hani H.
通讯作者	Mahmoud, SAA (corresponding author), Nucl Mat Author, Cairo, Egypt.
来源期刊	GEOLOGOS
ISSN	1426-8981
EISSN	2080-6574
出版年	2020
卷号	26 期号:3 页码:181-197
英文摘要	Unusual deposits formed by corundum are described from two separate pegmatitic veins in the Hafafit-Nugrus area of the South Eastern Desert of Egypt. Other related minerals are described too. The vein-type of corundum at Locality 1 (Vein 1) crosscuts through exposed rocks of an ophiolitic melange, whereas at Locality 2 (Vein 2), it crosscuts through exposed serpentinised ultramafic rocks. The main minerals in Vein 1 are plagioclase, corundum, grossular, phlogopite, muscovite and clinochlore, while almandine, xenotime-(Y), allanite-(Ce), zircon, Cr-rich spinel, apatite, titanite, fergusonite-(Y), meta-ankoleite, U-rich thorite (uranothorite), carbonate and illite are the accessories. In Vein 2, the main minerals are plagioclase, corundum, phlogopite and chlorite, while clinochlore, euxenite-(Y), Nb-rich rutile, almandine, xenotime-(Y), allanite-(Ce), zircon, spinel, apatite, titanite, kasolite, dickite, illite, carbonate, antigorite and talc are accessories. The two types of corundum veins differ in their concentrations of Th, U, Zr, Nb, Ta, REE, Y and Li in whole-rock compositions. Field observations, mineralogy and chemical analyses of samples from the two veins of corundum deposits, as well as concentrations of chromophore elements in corundum crystals, suggest metasomatic origins. The present study suggests that the two types of corundum veins formed at different ages from different residual magmas that underwent in-situ hybridisation with the host rocks.
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000625206400001
WOS关键词	GRANITIC PEGMATITES ; FRACTIONATION ; EVOLUTION ; CRUST ; NB ; TEMPERATURE ; NB/TA ; ZR/HF ; HF ; ZR
WOS类目	Geology
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/2XILL650/352588
作者单位	[Mahmoud, Soliman Abu Elatta A.; Ali, Hani H.] Nucl Mat Author, Cairo, Egypt
推荐引用方式 GB/T 7714	Mahmoud, Soliman Abu Elatta A.,Ali, Hani H.. Geology and genesis of vein-type corundum deposits in the Hafafit-Nugrus area, South Eastern Desert, Egypt[J],2020,26(3):181-197.
APA	Mahmoud, Soliman Abu Elatta A.,&Ali, Hani H..(2020).Geology and genesis of vein-type corundum deposits in the Hafafit-Nugrus area, South Eastern Desert, Egypt.GEOLOGOS,26(3),181-197.
MLA	Mahmoud, Soliman Abu Elatta A.,et al."Geology and genesis of vein-type corundum deposits in the Hafafit-Nugrus area, South Eastern Desert, Egypt".GEOLOGOS 26.3(2020):181-197.