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RINKITE-(Ce) IN THE NEPHELINE SYENITE PEGMATITE FROM THE SAIMA ALKALINE COMPLEX, NORTHEASTERN CHINA: ITS OCCURRENCE, ALTERATION, AND IMPLICATIONS FOR REE MINERALIZATION

文献类型：期刊论文

作者Wu, Bin1; Wen, Han-Jie1; Bonnetti, Christophe1; Wang, Ru-Cheng2; Yang, Jin-Hui3; Wu, Fu-Yuan3
刊名CANADIAN MINERALOGIST
出版日期2019-11-01
卷号57期号:6页码:903-924
关键词Saima alkaline complex alkaline pegmatite rinkite-(Ce) magmatic-hydrothermal system REE mineralization
ISSN号0008-4476
DOI10.3749/canmin.1900042
英文摘要The nepheline syenite pegmatite in the Saima alkaline complex in northeastern China is characterized by REE mineralization, mainly rinkite-(Ce) and associated alteration minerals. As the most abundant REE-bearing mineral in the pegmatite, rinkite-(Ce) closely coexists with microcline, nepheline, natrolite, and calcite. Some rinkite-(Ce) grains show compositional sector-zonation, in which the inner core displays relatively high Ti, Ca, and Sr concentrations, but low Zr, REE, and Na contents. Primary rinkite-(Ce) has undergone multiple episodes of fluid interactions, and accordingly, from weak to strong, three different mineral assemblages of hydrothermal alteration can be summarized: (1) rinkite-(Ce) + secondary natrolite 6 K-feldspar 6 minor fluorbritholite-(Ce); (2) rinkite-(Ce) relics+secondary natrolite+K-feldspar+fluorbritholite-(Ce) + unidentified Ca-Ti silicate mineral + fluorite and calcite; and (3) pseudomorphs after rinkite-(Ce). The pseudomorphs can be divided into two groups characterized by distinct mineral associations: (1) Ca-bearing strontianite+fluorbritholite-(Ce) + natrolite + fluorite + calcite coexisting with silicate minerals; and (2) calcite + fluorite + fluorbritholite-(Ce) + rinkite-(Ce) relics 6 Ca-bearing strontianite 6 ancylite-(Ce) associated with a calcite matrix. These alteration mineral assemblages are evidence of magmatic-derived alkali metasomatism due to an alkali-CO2-F-rich fluid and Ca-metasomatism due to a different, externally derived Sr- and Ca-rich fluid. The metasomatic events acted as the potential driving force for the rinkite-(Ce) dissolution and pseudomorph-forming process. The high concentration of rinkite-(Ce) in the nepheline syenite pegmatite results from the fractional crystallization of the Saima CO2-rich alkaline silicate magma, and the successive alterations of rinkite-(Ce) attest to the important role played by hydrothermal fluids in controlling the remobilization of REE and the crystallization of secondary rare earth minerals.
WOS关键词RARE-EARTH-ELEMENTS ; HIGH-FIELD-STRENGTH ; LA-ICP-MS ; SOUTH GREENLAND ; ILIMAUSSAQ COMPLEX ; STRUCTURE TOPOLOGY ; TRACE-ELEMENTS ; HYDROTHERMAL MOBILIZATION ; PERIDOTITE XENOLITHS ; TITANIUM SILICATES
资助项目National Natural Science Foundation of China[41702033] ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University[2017-LAMD-K07] ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology[DHBK2016124] ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology[Z1907]
WOS研究方向Mineralogy
语种英语
WOS记录号WOS:000505048900006
出版者MINERALOGICAL ASSOC CANADA
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology
源URL[http://ir.iggcas.ac.cn/handle/132A11/95861]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Wang, Ru-Cheng
作者单位1.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
2.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Bin,Wen, Han-Jie,Bonnetti, Christophe,et al. RINKITE-(Ce) IN THE NEPHELINE SYENITE PEGMATITE FROM THE SAIMA ALKALINE COMPLEX, NORTHEASTERN CHINA: ITS OCCURRENCE, ALTERATION, AND IMPLICATIONS FOR REE MINERALIZATION[J]. CANADIAN MINERALOGIST,2019,57(6):903-924.
APA Wu, Bin,Wen, Han-Jie,Bonnetti, Christophe,Wang, Ru-Cheng,Yang, Jin-Hui,&Wu, Fu-Yuan.(2019).RINKITE-(Ce) IN THE NEPHELINE SYENITE PEGMATITE FROM THE SAIMA ALKALINE COMPLEX, NORTHEASTERN CHINA: ITS OCCURRENCE, ALTERATION, AND IMPLICATIONS FOR REE MINERALIZATION.CANADIAN MINERALOGIST,57(6),903-924.
MLA Wu, Bin,et al."RINKITE-(Ce) IN THE NEPHELINE SYENITE PEGMATITE FROM THE SAIMA ALKALINE COMPLEX, NORTHEASTERN CHINA: ITS OCCURRENCE, ALTERATION, AND IMPLICATIONS FOR REE MINERALIZATION".CANADIAN MINERALOGIST 57.6(2019):903-924.

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来源：地质与地球物理研究所

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