Cassiterite U-Pb dating of the Yelonggou pegmatite-type lithium deposit in western Sichuan and its metallogenic age constraints  

作　　者：Xiang-yuan Yue Qian Zhang Jun-jun Zhang Wei Zhang Jing Zhang Zhi-quan Jia Li-ping Luo 

机构地区：[1]Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu,610041,China [2]Shandong Lunan Geology and Exploration Institute(No.2 Brigade of Shandong BGMR),Jining,272100,China [3]Sichuan Shudao Advanced Material Science Group Co.Ltd.,Chengdu,610041,China [4]No.3 Geological Brigade of Sichuan Province,Chongzhou,611230,China

出　　处：《China Geology》2024年第1期153-156,共4页中国地质（英文）

基　　金：financially supported by the Geological Survey Project of China Geological Survey(DD20230341);the National Natural Science Funds Integration Project(92262302)。

摘　　要：1.Objective Pegmatite hosts important resource of rare metals,e.g.,lithium(Li)and beryllium(Be).In recent years,increasingly more studies were dedicated to characterize and unravel the formation of pegmatite-type deposits,for which accurate dating of pegmatite formation and mineralization is essential.The Songpan-Ganzi orogenic belt is a major rare metal metallogenic belt in China,hosting many important pegmatite-type Li deposits,including the Lijiagou,Dangba,Jiajika,Yelonggou,Cuola,and Declalongba.Radiometric age data(mica Ar-Ar and zircon/cassiterite U-Pb)from these Li deposits are sparse,ranging from 210 to 152 Ma.However,obtaining reliable zircon U-Pb dates can be a challenge due to the strong decidualization in pegmatites.As a result,the formation and mineralization ages of these rare metal pegmatites remain controversial,which hampers the development of pegmatite-type metallogenic model for the Songpan-Ganzi orogenic belt.

关 键 词：DATING METALLOGENIC ZIRCON 

分 类 号：P618.71[天文地球—矿床学]