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DOI | 10.1016/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
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ISSN | 0169-1368 |
EISSN | 1872-7360 |
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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