Fluid Inclusion Study on the Moyoulete Sb-Cu Deposit, Xinjiang, China

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Zhang, Hui^1 ; Zhang, Yinghua^1 ; Xu, Jiuhua^1 ; Cheng, Xihui^2 ; Zhang, Guorui^3 ; Bian, Chunjing^1

School of Civil and Resource Engineering, University of Science and Technology, Beijing, China^1

MLR Key Laboratory of Metallogeny and Mineral Resources Assessment, Institute of Mineral Resources, CAGS, Beijing, China^2

Center of Journals and Annals, Hebei GEO University, China^3

关键词: Aqueous fluids;    Copper mineralization;    Fluid inclusion;    Hydrothermal fluids;    Late Permian;    Late stage;    Quartz vein;    Sedimentary basin;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/3/032086/pdf
DOI  :  10.1088/1755-1315/237/3/032086

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Moyoulete Sb-Cu deposit occurs in Devonian Kelan volcanic-sedimentary basin, which strikes NW-SE along the south margin of Altay Mountains, hosted in lower Devonian upper kangbutiebao formation. Sulfide quartz veins could be divided into two stages: Early stage (Q1), charactered by white lenticular or veinlet quartz veins of copper mineralization occurring in metamorphic crystal tuff, metamorphic basic volcanic rock, or rhyolite porphyry; late stage (Q2), charactered by copper-bearing grey-white pyrite-quartz veins cutting the metamorphic rocks. The four types of fluid inclusions in the quartz veins can be identified: 1) CO2-rich fluid inclusions; 2) Water-rich fluid inclusions; 3) Carbonic fluid inclusions; 4) Aqueous fluid inclusions. CO2-rich fluid inclusions in Q1 have Tm, CO2 =-61.9∼-57.9 °C and Th,CO2 =-10.0∼21.6 °C; the Th,totS' are 358∼388 °C, while in Q2 have Tm,CO2 =-63.2∼-60.2 °C and Th,CO2 =-20.4∼17.4°C; the Th,totS' are 270∼325°C in the Moyoulete Sb-Cu deposit. The characteristics of CO2-rich fluid inclusions from the Moyoulete Sb-Cu deposit are similar to those from other Cu-Au mineralization localities. The genesis of vein Sb-Cu mineralization was connected with the orogeny-metamorphism hydrothermal fluid, resulting from the orogeny metamorphism of the Late Permian-Triassic in the south margin of the Altay Mountains.