Arid
DOI10.1016/j.oregeorev.2015.04.016
Altered granitic rocks, Nusab El Balgum Area, Southwestern Desert, Egypt: Mineralogical and geochemical aspects of REEs
Ibrahim, Mohamed El-Ahmady1; El-Kalioby, Baher Abd El Hamed2; Aly, Gehan Mohamed1; El-Tohamy, Amera Mohamed1; Watanabe, Koichiro3
通讯作者Ibrahim, Mohamed El-Ahmady
来源期刊ORE GEOLOGY REVIEWS
ISSN0169-1368
EISSN1872-7360
出版年2015
卷号70页码:252-261
英文摘要

Gabel Nusab El Balgum is located in the northern part of Bir Safsaf Area Southwestern Desert, Egypt (about 600 km southwest of Aswan City) and covers an area of about 40 km(2). A few workers have investigated the Nusab El Balgum Area from the mineralogical and geochemical point of view. The area consists mainly of Devonian sandstone, Permo-Triassic volcanic rocks, altered granitic rocks and post-granitic dykes. The altered granitic rocks (silicified and kaolinized) have undergone several hydrothermal alteration processes and were subjected to different types of alteration (hematitization, carbonatization, kaolinization, sericitization and silicification) and are characterized by extreme enrichment in rare metals (such as Zr, Nb, Y and REEs).


Bastnaesite, parisite, fergusonite, columbite, hydrothermal zircon, monazite and xenotime are common in the silicified and kaolinized granites. The silicified granite commonly contains more rare metals than the kaolinized granite. The REEs in Nusab El Balgum granites were introduced by hydrothermal fluids during alteration and occur in carbonate minerals such as bastnaesite (LREE) (CO3) F and parisite Ca (LREE) (2)(CO3)(3)F-2.


The REE chondrite-normalized patterns of altered granites show an M-type tetrad effect and indicate higher LREEs, negative Ce anomaly (due to alteration by hydrothermal fluids) and negative Eu anomaly. (C) 2015 Elsevier B.V. All rights reserved.


英文关键词Hydrothermal solutions REEs Nusab El Balgum Egypt Tetrad effect
类型Article
语种英语
国家Egypt ; Japan
收录类别SCI-E
WOS记录号WOS:000356734500015
WOS关键词ISOVALENT TRACE-ELEMENTS ; RARE-EARTH-ELEMENTS ; HYDROTHERMAL ALTERATION ; PERALUMINOUS GRANITE ; IMMOBILE ELEMENTS ; BAERZHE GRANITES ; AQUEOUS SYSTEMS ; W-TYPE ; TETRAD ; PATTERNS
WOS类目Geology ; Mineralogy ; Mining & Mineral Processing
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/189437
作者单位1.Nucl Mat Author, Cairo, Egypt;
2.Ain Shams Univ, Fac Sci, Cairo, Egypt;
3.Kyushu Univ, Fac Engn, Fukuoka 812, Japan
推荐引用方式
GB/T 7714
Ibrahim, Mohamed El-Ahmady,El-Kalioby, Baher Abd El Hamed,Aly, Gehan Mohamed,et al. Altered granitic rocks, Nusab El Balgum Area, Southwestern Desert, Egypt: Mineralogical and geochemical aspects of REEs[J],2015,70:252-261.
APA Ibrahim, Mohamed El-Ahmady,El-Kalioby, Baher Abd El Hamed,Aly, Gehan Mohamed,El-Tohamy, Amera Mohamed,&Watanabe, Koichiro.(2015).Altered granitic rocks, Nusab El Balgum Area, Southwestern Desert, Egypt: Mineralogical and geochemical aspects of REEs.ORE GEOLOGY REVIEWS,70,252-261.
MLA Ibrahim, Mohamed El-Ahmady,et al."Altered granitic rocks, Nusab El Balgum Area, Southwestern Desert, Egypt: Mineralogical and geochemical aspects of REEs".ORE GEOLOGY REVIEWS 70(2015):252-261.
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