H-O-S-Pb isotopes for Sources of Ore-forming Material of Yinshuisi and Gongdongchong Pb-Zn Deposits in Eastern Dabie Orogen

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Wu, Haoran^1 ; Xie, Yuling^1 ; Wang, Ying^1

School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing

100083, China^1

关键词: Eastern Dabie orogen;    Isotopic composition;    Magmatic origin;    Metallogenic belt;    Meteoric waters;    Ore forming material;    Ore-forming fluid;    Ore-forming metals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/2/022018/pdf
DOI  :  10.1088/1755-1315/310/2/022018

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Yinshuisi and Gongdongchong are two important Pb-Zn deposits of the the eastern border of Qinling-Dabie metallogenic belt, Jinzhai County, Anhui Province. δD and δ180 values for the Yinshuisi and Gongdongchong deposits are -102.‰ to -93.7‰ and -4.8‰ to -2.8‰, -85.7‰ to -74.0‰ and -1.7‰ to 0.1‰, respectively, indicating the ore-forming fluid is magmatic origin and mixed with the meteoric water. δ34S values of ore sulfides from the Yinshuisi and Gongdongchong deposits show a narrow interval of (1.7‰ to 4.4‰ and 2.4‰ to 5.3‰), suggesting sulfur in the these deposits was derived from magma. In the Yinshuisi and Gongdongchong deposit, 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb values of sulfides point up the ore-forming metals from mixing source, mantle and crust, but not the same source. Pb isotopic compositions of the ore sulfides are close to the mineralization-related intrusions, indicating the intrusions provided major of the ore-forming material.