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He–Ar Isotopic Tracing of Pyrite from Ore-forming Fluids of the Sanshandao Au Deposit, Jiaodong Area
投稿时间:2019-01-29  修订日期:2019-03-14  点此下载全文
引用本文:HAN Zhenyu,YU Xiaowei,LI Shoujun,Tian Jingxiang,WANG Zhongliang,YU Xiaojing,WANG Ligong.2019.He–Ar Isotopic Tracing of Pyrite from Ore-forming Fluids of the Sanshandao Au Deposit, Jiaodong Area[J].ACTA GEOLOGICA SINICA(English edition),93(6):1797~1807
摘要点击次数: 1274
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DOI:10.1111/1755-6724.14335
作者单位E-mail
HAN Zhenyu 1 College of Earth Science & Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China 2 Yantai Natural Museum, Yantai, Shandong 264000, China  
YU Xiaowei 3 Shandong Institute of Geological Survey, Ji’nan 250014, China  
LI Shoujun 1 College of Earth Science & Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China lishoujun@126.com 
Tian Jingxiang 4 Shandong Institute of Geological Sciences, Ji’nan 250014, China 5 Key Laboratory of Gold Mineralization Process and Resources Utilization, Ministry of Land and Resources Ji’nan 250014, China 6 Key Laboratory of Metal Mineralization Geological Processes and Resources Utilization in Shandong Province Ji’nan 250014, China  
WANG Zhongliang 7 State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Beijing 100083 China  
YU Xiaojing 8 The third Exploration Institute of Geology and Mineral Resources of Shandong Province, Yantai, Shandong 264000, China  
WANG Ligong 3 Shandong Institute of Geological Survey, Ji’nan 250014, China  
 
Author NameAffiliationE-mail
HAN Zhenyu 1 College of Earth Science & Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China 2 Yantai Natural Museum, Yantai, Shandong 264000, China  
YU Xiaowei 3 Shandong Institute of Geological Survey, Ji’nan 250014, China  
LI Shoujun 1 College of Earth Science & Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China lishoujun@126.com 
Tian Jingxiang 4 Shandong Institute of Geological Sciences, Ji’nan 250014, China 5 Key Laboratory of Gold Mineralization Process and Resources Utilization, Ministry of Land and Resources Ji’nan 250014, China 6 Key Laboratory of Metal Mineralization Geological Processes and Resources Utilization in Shandong Province Ji’nan 250014, China  
WANG Zhongliang 7 State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Beijing 100083 China  
YU Xiaojing 8 The third Exploration Institute of Geology and Mineral Resources of Shandong Province, Yantai, Shandong 264000, China  
WANG Ligong 3 Shandong Institute of Geological Survey, Ji’nan 250014, China  
Abstract:The Sanshandao Au deposit is located in the famous Sanshandao metallogenic belt, Jiaodong area. To date, accumulative Au resources of 1000 t have been identified from the belt. Sanshandao is a world-class gold deposit with Au mineralization hosted in Early Cretaceous Guojialing-type granites. Thus, studies on the genesis and ore-forming element sources of the Sanshandao Au deposit are crucial. He and Ar isotopic analyses of fluid inclusions from pyrite (the carrier of Au) indicate that the fluid inclusions have 3He/4He=0.043–0.21 Ra with an average of 0.096 Ra and 40Ar/36Ar=488–664 with an average of 570.8. These values represent the initial He and Ar isotopic compositions of ore-forming fluids for trapped fluid inclusions. The comparison of H–O isotopic characteristics combined with deposit geology and wall rock alteration reveals that the ore-forming fluids of the Sanshandao Au deposit show mixed crust–mantle origin characteristics, and they mainly comprise crust-derived fluid mixed with minor mantle-derived fluid and meteoric water during the uprising process. The ore-forming elements were generally sourced from pre-Cambrian meta-basement rocks formed by Mesozoic reactivation and mixed with minor shallow crustal and mantle components.
keywords:Sanshandao Au deposit, He and Ar isotopes, fluid inclusions, crustal fluid, mantle-derived fluid
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