首页|Lithium Isotope Analytical Methods and Implications for Rare-Metal Mineralization in Granite-Pegmatite Systems:An Overview

Lithium Isotope Analytical Methods and Implications for Rare-Metal Mineralization in Granite-Pegmatite Systems:An Overview

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The origin of highly-fractionated granite-pegmatite systems and their associated rare met-al mineralization has been widely studied,but there is still ongoing debate.Prevailing hypotheses sug-gest that pegmatite formation and the associated rare metal mineralization are closely related to aque-ous fluid processes.Lithium(Li)isotope analysis has been widely applied to trace granite-pegmatite evo-lution.This is because lithium is widely present in various minerals(e.g.,mica,tourmaline)that record the melt and fluid compositions,and lithium isotopes are sensitive to magmatic-hydrothermal processes.We briefly review the methodology of Li isotope analyses,the mechanisms of Li isotopic fractionation,and,in particular,Li isotope fractionation in granite-pegmatite system based on Li isotope data we have collected and the latest developments in Li isotope geochemistry.With the development of analytical technology,high-precision measurement of the Li content and isotopic compositions have facilitated a series of scientific breakthroughs in understanding the magmatic-hydrothermal evolution of rare-element ore deposits.Li isotope analyses on bulk mineral separates have demonstrated their ability to trace various hydrothermal processes.In situ Li isotope analysis methods has been enhanced by the de-velopment of new,homogeneous mineral reference materials.In situ SIMS and LA-MC-ICP-MS Li iso-tope measurements on minerals(e.g.,tourmaline)will likely become more important in studying the fluid-rock interactions in magmatic,metamorphic,and hydrothermal processes,as well as on pegmatite petrogenesis and rare-metal mineralization.

lithiumisotopesgranitic-pegmatite systemmagmatic-hydrothermal evolutionrare-metal deposits

Xiangying Ye、Bin Li、Dongbo Tan、Kecheng Liu、Zhiyong Zhu、Hafiz Muhammad Siddique、Yilin Xiao

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Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Ministry of Education),School of Geosciences and Info-physics,Central South University,Changsha 410083,China

CAS Key Laboratory of Crust-Mantle Materials and Environments,School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China

Department of Earth Sciences,University of Oxford,Oxford OX1 3AN,United Kingdom

Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China

CAS Key Laboratory of Geospace Environment and Department of Plasma Physics and Fusion Engineering,University of Science and Technology of China,Hefei 230026,China

Chinese Academy of Sciences Center of Excellence in Comparative Planetology,Hefei 230026,China

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2024

10.1007/s12583-023-1972-1

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(6)