Fluid mixing as the mechanism of formation of the Dajing Cu-Sn-Ag-Pb-Zn ore deposit, Inner Mongolia ???Fluid inclusion and stable isotope evidence
作者： Wei LIU
DOI: 10.1360/03YD9057
关键词:
摘要: Dajing Cu-Sn-Ag-Pb-Zn ore deposit, in the Inner Mongolia Autonomous Region of China, is a fissure-filling hydrothermal deposit. The δ D values quartz-hosted inclusion water are centered at −100‰ — −130‰. 34 S sulfide minerals and 13 C carbonate gangue vary from −0.3‰ to 2.6‰ −2.9‰ −7.0‰, respectively. Integrated isotopic data point two major contributions mineralizing fluid that include dominant meteoric-derived groundwater, sulfur carbon species hypogene magma. Linear trends exhibited on gaseous H 2 O versus CO plot, plots CO, N , CH 4 6 . It shown by quantitative simulation magma degassing cannot explain linear trends. Hence, these interpreted terms mixing -rich magmatic with groundwater. groundwater circulated Paleozoic sedimentary rocks absorbed radiogenic Ar organic matter. Cooling effects resulting have caused precipitation minerals.
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