典型文献
Iron isotope fractionation during fenitization:a case study of carbonatite dykes from Bayan Obo,Inner Mongolia,China
文献摘要：
As a powerful tracer in high-temperature geochemistry,Fe isotopes have been studied for their behaviour during fluid exsolution and evolution related to felsic magma system,but that for carbonatite magma system remains unknown.Here we study the Fe isotope fractionation behaviour dur-ing fenitization-processes that widely occur associated with carbonatite or alkaline intrusions.Nine fenite/carbon-atite samples from carbonatite dykes at Bayan Obo area are analyzed for their Fe isotope compositions as well as elemental compositions.Combined with previous reported carbonatite δ56Fe data,the results show that carbonatites range from-0.35‰ to 0.28‰,with an average of-0.10‰in δ56Fe values,while fenites range from-0.17‰ to 0.30‰,with an average of 0.11‰ in δ56Fe values.This indicates that fenitizing fluids exsolved from carbonatite melts are enriched in heavier Fe isotopes.Such a Fe iso-tope fractionation trend is different from that for fluid exso-lution from felsic magmatism.δ56Fe values in fenites are negatively correlated with indicators of fenitization inten-sity such as(Na+K),Ti,Ba,Th,Nb,U or Pb abundances,likely reflecting that Fe isotopes fractionate during the evo-lution of the fenitizing fluids.Thus,Fe isotopes are a valu-able tool for tracing fluid exsolution and evolution relevant to carbonatite magmatism and related metal mineralization.
文献关键词：
中图分类号：
作者姓名：
Zongyi Wu;Jian Sun;Xiaowei Li;Xiangkun Zhu
作者机构：
Institute of Geology,MNR Key Laboratory of Deep-Earth Dynamics,Chinese Academy of Geological Sciences MNR Key Laboratory of Isotope Geology,100037 Beijing,PR China;State Key Laboratory of Geological Processes and Mineral Resources,School of Earth Science and Resources,University of Geosciences,100083 Beijing,China
文献出处：
引用格式：
[1]Zongyi Wu;Jian Sun;Xiaowei Li;Xiangkun Zhu-.Iron isotope fractionation during fenitization:a case study of carbonatite dykes from Bayan Obo,Inner Mongolia,China)[J].地球化学学报（英文版）,2022(05):789-793
A类：
fenitization,fenite,atite,carbonatites,fenites,fenitizing,exsolved,exso
B类：
Iron,fractionation,during,case,study,dykes,from,Bayan,Obo,Inner,Mongolia,China,powerful,tracer,high,temperature,geochemistry,isotopes,have,been,studied,their,behaviour,exsolution,evolution,felsic,system,but,that,remains,unknown,Here,processes,widely,occur,associated,alkaline,intrusions,Nine,samples,area,analyzed,compositions,well,elemental,Combined,previous,reported,56Fe,data,results,show,range,average,values,while,This,indicates,fluids,melts,enriched,heavier,Such,trend,different,magmatism,negatively,correlated,indicators,inten,sity,such,Na+K,Ti,Nb,Pb,abundances,likely,reflecting,fractionate,Thus,able,tool,tracing,relevant,metal,mineralization
AB值：
0.410545
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