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中南大学学报(自然科学版)

Journal of Central South University

第46卷    第10期    总第254期    2015年10月

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文章编号:1672-7207(2015)10-3832-09
单个流体包裹体成分LA-ICPMS分析与矿床学应用进展
付乐兵,魏俊浩,张道涵,谭俊,田宁,赵志新

(中国地质大学 资源学院,湖北 武汉,430074)

摘 要: LA-ICPMS分析技术能准确测量单个流体包裹体中除稀有气体,F,O,H,N与多原子相组分外的所有元素及Sr和Pb同位素组成,是新兴的研究成矿流体特征的重要手段。对近年来测试过程中包裹体剥蚀、气溶胶传输、ICPMS测量及数据处理等4个关键步骤的研究进展进行总结,并就LA-ICPMS分析技术在矿床学研究中的应用进行归纳,其可以精细地刻画多种热液系统中成矿流体与成矿物质的来源、运移、沉淀及富集等地球化学过程。同时指出,金属气相转运机制有待进一步研究,而在野外地质调查及微观热力学测试基础上,飞秒激光与MC-ICPMS联用分析单个流体包裹体成分将是未来矿床学研究的重要突破口。

 

关键字: 激光;等离子体质谱;成矿流体;斑岩型矿床;金属气相转运

A review of LA-ICPMS analysis for individual fluid inclusions and its applications in ore deposits
FU Lebing, WEI Junhao, ZHANG Daohan, TAN Jun, TIAN Ning, ZHAO Zhixin

Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China

Abstract:LA-ICPMS has become a most powerful technique for the research on ore-forming fluid. Except for the noble gases, F, O, H, N and polyatomic species, all elements and the Sr and Pb isotope compositions of individual fluid inclusion can be analyzed quantitatively by LA-ICPMS. The recent developments about the LA-ICPMS analysis of individual fluid inclusion, including the various aspects of laser ablation, aerosol transport, ICPMS detection and the data reduction were reviewed. Then, the applications of individual fluid inclusion analysis by LA-ICPMS in the ore deposits were summarized. This technique is used in characterizing the mineralization processes, such as tracing the source of ore-forming fluid and metals, and deciphering the processes about fluid transport and metal deposition. The results show that the vapor transport of metals needs to be re-evaluated, and significant future progress can be achieved by combination of the femtosecond-laser and MC-ICPMS based on the detailed field researches and microthermometric measurements.

 

Key words: laser; plasma mass spectrometry; ore-forming fluid; porphyry-type deposits; vapor-transport of ore metals

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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