干旱区生态环境知识资源中心(Arid): Low-temperature alteration of uranium-thorium bearing minerals and its significance in neoformation of radioactive minerals in stream sediments of Wadi El-Reddah, North Eastern Desert, Egypt

Arid

DOI	10.1007/s11631-019-00335-z
	Low-temperature alteration of uranium-thorium bearing minerals and its significance in neoformation of radioactive minerals in stream sediments of Wadi El-Reddah, North Eastern Desert, Egypt
	Ebyan, O. A.; Khamis, H. A.; Baghdady, A. R.; El-Feky, M. G.; Abed, N. S.
通讯作者	Abed, NS
来源期刊	ACTA GEOCHIMICA
ISSN	2096-0956
EISSN	2365-7499
出版年	2020
卷号	39 期号:1 页码:96-115
英文摘要	The stream sediments of Wadi El Reddah (North Eastern Desert, Egypt) are geochemically and mineralogically investigated. Their content of radioactive and other heavy minerals is mainly represented by thorite, uranothorite, zircon, monazite, xenotime, columbite, fergusonite, and unknown rare earth elements (REEs) bearing minerals as well as cassiterite. Special emphasis on REE content of thorite, uranothorite, zircon and xenotime has been done to correlate them with the increase of uranium contents in these sediments. The key evidence for the presence low-temperature alteration processes includes the presence of some zircon crystals as remnants after complete dissolution of the overgrowth zircon in severe acidic environment, the sulphur content, biogenic minerals, occurrence of unusual minerals as cassiterite pore filling in zircon, variation in the REEs content from the surrounding granites to the stream sediments and the abundance of monazite in the surrounding granites. Most minerals are partially and/or completely altered, which indicated by the pseudomorphism of zircon by xenotime, thorite, and uranothorite.
英文关键词	Zircon Thorite Xenotime Radioactive minerals Low-temperature alteration Wadi El-Reddah
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000511494100007
WOS关键词	HYDROTHERMAL ALTERATION ; SOLID-SOLUTIONS ; ZIRCON GROWTH ; RICH ZIRCON ; GRANITES ; CHEMISTRY ; RADIATION ; CRYSTALLINE ; ELEMENTS ; HF
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334212
作者单位	[Baghdady, A. R.] Ain Shams Univ, Fac Sci, Geol Dept, Cairo 11566, Egypt; [Ebyan, O. A.; Khamis, H. A.; El-Feky, M. G.; Abed, N. S.] NMA, POB 530, Cairo, Egypt
推荐引用方式 GB/T 7714	Ebyan, O. A.,Khamis, H. A.,Baghdady, A. R.,et al. Low-temperature alteration of uranium-thorium bearing minerals and its significance in neoformation of radioactive minerals in stream sediments of Wadi El-Reddah, North Eastern Desert, Egypt[J],2020,39(1):96-115.
APA	Ebyan, O. A.,Khamis, H. A.,Baghdady, A. R.,El-Feky, M. G.,&Abed, N. S..(2020).Low-temperature alteration of uranium-thorium bearing minerals and its significance in neoformation of radioactive minerals in stream sediments of Wadi El-Reddah, North Eastern Desert, Egypt.ACTA GEOCHIMICA,39(1),96-115.
MLA	Ebyan, O. A.,et al."Low-temperature alteration of uranium-thorium bearing minerals and its significance in neoformation of radioactive minerals in stream sediments of Wadi El-Reddah, North Eastern Desert, Egypt".ACTA GEOCHIMICA 39.1(2020):96-115.