caa a22 4500 606149953 CHVBK 20210128100536.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s00531-015-1141-y doi (NATIONALLICENCE)springer-10.1007/s00531-015-1141-y Ore genesis of the Weibao lead-zinc district, Eastern Kunlun Orogen, China: constrains from ore geology, fluid inclusion and isotope geochemistry [Elektronische Daten] [Jing Fang, Huayong Chen, Li Zhang, Yi Zheng, Dengfeng Li, Chengming Wang, Dengliang Shen] The Weibao lead-zinc district, composed by two deposits named the East Weibao deposit and the West Weibao deposit, respectively, is located in the Qimantagh area, Eastern Kunlun Orogen. Although both controlled by skarn alternation and experienced similar mineralization processes, the East Weibao deposit is dominated by massive ores, while the West Weibao deposit is characterized by banded ores. The ore-forming processes of both the deposits can be divided into four stages including prograde skarn stage, retrograde skarn stage, sulfide stage and carbonate stage. Three types of fluid inclusions, i.e., pure CO2 fluid inclusion (PC-type), CO2-bearing fluid inclusion (C-type) and aqueous types (W-type), have been identified in quartz, calcite and sphalerite from different stages. Noteworthily, only sulfide stage of the East Weibao deposit contains carbonic fluid inclusions, whereas only aqueous fluid inclusions were observed in sulfide stage of the West Weibao deposit. The CO2-rich and aqueous-type fluid inclusions in sulfide stage of the East Weibao deposit were homogenized at temperatures between 263 and 424°C, concentrating at 360-400°C, with salinities ranging between 3.2 and 13.6wt% NaCl eqv.; the W-type fluid inclusions in sulfide stage of the West Weibao deposit were homogenized at temperatures between 228 and 381°C, concentrating at 280-340°C, with salinities between 1.6 and 9.0wt% NaCl eqv.; and the aqueous-type fluid inclusions in carbonate stage in both deposits were homogenized at temperatures between 115 and 336°C, concentrating at 200-240°C, with salinities between 0.2 and 5.9wt% NaCl eqv. The ore-forming fluid in sulfide stage at the East Weibao deposit yielded calculated $$\updelta^{18} {\text{O}}_{{{\text{H}}_{2} {\text{O}}}}$$ δ 18 O H 2 O and δ18D values of 4.2 to 5.6 and −88 to −83‰, respectively. The results are 8.8 to 10.8, −99 to −92‰ for the sulfide stage at the West Weibao deposit and −1.0 to −0.2, −50 to −45‰ for carbonate stages in both deposits. The lead isotopic ratios of sulfide samples from the Weibao lead-zinc district range between 18.259 and 18.336 for 206Pb/204Pb, 15.580 and 15.659 for 207Pb/204Pb, and 38.007 and 38.253 for 208Pb/204Pb, respectively, and the corresponding sulfur isotopic values range between −2.2 and 3.6‰. The fluid inclusion and isotope studies on the two deposits in the Weibao lead-zinc district suggest that they both have magmatic origin but mineralized by different mechanisms. Mineralization at the East Weibao deposit may be caused by fluid immiscibility and mixing, while at the West Weibao deposit, mineralization may result from water-rock reactions between magmatic fluid and impure carbonate wall rocks. Combined with geological observation, we conclude that the Weibao lead-zinc district as a united magmatic hydrothermal fluid system associated with the Triassic magmatism that widely distributes in the Qimantagh area. Springer-Verlag Berlin Heidelberg, 2015 The Weibao lead-zinc district nationallicence Fluid inclusion nationallicence Lead and sulfur isotope nationallicence Magmatic fluid system nationallicence Triassic metallogenesis nationallicence Qimantagh area nationallicence Fang Jing Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Chen Huayong Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Zhang Li Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Zheng Yi Guangdong Provincial Key Lab of Geological Processes and Mineral Resource Survey, Sun Yat-sen University, 510275, Guangzhou, China aut Li Dengfeng Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Wang Chengming Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Shen Dengliang Geophysical and Geological Part, Xinjiang Bureau of Geology and Mineral Resource, 831100, Changji, Xinjinag, China aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1209-1233 1437-3254 104:5<1209 2015 104 531 https://doi.org/10.1007/s00531-015-1141-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00531-015-1141-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fang Jing Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Chen Huayong Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Zhang Li Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Zheng Yi Guangdong Provincial Key Lab of Geological Processes and Mineral Resource Survey, Sun Yat-sen University, 510275, Guangzhou, China aut NATIONALLICENCE 700 1- Li Dengfeng Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Wang Chengming Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Shen Dengliang Geophysical and Geological Part, Xinjiang Bureau of Geology and Mineral Resource, 831100, Changji, Xinjinag, China aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1209-1233 1437-3254 104:5<1209 2015 104 531