Petrological and geochemical characteristics of Zhaibei granites in   Nanling region, Southeast China: Implications for REE mineralization

doi:10.1016/j.oregeorev.2014.04.004

CORC > 北京大学 > 地球与空间科学学院

	Petrological and geochemical characteristics of Zhaibei granites in Nanling region, Southeast China: Implications for REE mineralization
	Wang, Lize ; Xu, Cheng ; Zhao, Zheng ; Song, Wenlei ; Kynicky, Jindrich
刊名	ore geology reviews
	2015
关键词	Granite Petrogenesis Ion adsorption REE mineralization Fractional crystallization Southeast China A-TYPE GRANITES TRACE-ELEMENT EARTH ROCKS DISCRIMINATION PETROGENESIS ORIGIN CONSTRAINTS DISSOLUTION TECTONICS
DOI	10.1016/j.oregeorev.2014.04.004
英文摘要	Mineralization with ion adsorption rare earth elements (REEs) in the weathering profile of granitoid rocks from Nanling region of Southeast China is an important REE resource, especially for heavy REE (HREE) and Y. However, the Jurassic granites in Zhaibei which host the ion adsorption light REE (LREE) ores are rare. It is of peraluminous and high K calc-alkaline composition, which has similar geochemical features of high K2O + Na2O and Zr + Nb + Ce + Y contents and Ga/Al ratio to A-type granite. Based on the chemical discrimination criteria of Eby [Geology 20 (1992) 641], the Zhaibei granite belongs to A1-type and has similar source to ocean island basalts. The rock is enriched in LREE and contains abundant REE minerals including LREE-phosphates and halides. Minor LREE was also determined in the feldspar and biotite, which shows negligible and negative Eu anomalies, respectively. This indicates that the Zhaibei granite was generated by extreme differentiation of basaltic parent magmas. In contrast, granites associated with ion adsorption HREE ores contain amounts of HREE minerals, and show similar geochemical characteristics with fractionated felsic granites. Note that most Jurassic granitoids in the Nanling region contain no REE minerals and cannot produce REE mineralization. They belong to unfractionated M-, I- and S-type granites. Therefore, accumulation of REE in the weathering profile is controlled by primary REE mineral compositions in the granitoids. Intense fractional crystallization plays a role on REE enrichment in the Nanling granitoid rocks. (C) 2014 Elsevier B.V. All rights reserved.; Geology; Mineralogy; Mining & Mineral Processing; SCI(E); EI; 0; ARTICLE; xucheng1999@hotmail.com; kevin8572@hotmail.com; 1; 569-582; 64
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155344]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Wang, Lize,Xu, Cheng,Zhao, Zheng,et al. Petrological and geochemical characteristics of Zhaibei granites in Nanling region, Southeast China: Implications for REE mineralization[J]. ore geology reviews,2015.
APA	Wang, Lize,Xu, Cheng,Zhao, Zheng,Song, Wenlei,&Kynicky, Jindrich.(2015).Petrological and geochemical characteristics of Zhaibei granites in Nanling region, Southeast China: Implications for REE mineralization.ore geology reviews.
MLA	Wang, Lize,et al."Petrological and geochemical characteristics of Zhaibei granites in Nanling region, Southeast China: Implications for REE mineralization".ore geology reviews (2015).