A High Temperature and High Pressure Experimental Study on Re-Bearing Capability of Sulfide  

作　　者：Yingying Liu Zhilong Huang Chengming Zhu 

机构地区：[1]State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China [2]Key Laboratory for High Temperature & High Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China

出　　处：《Journal of Earth Science》2017年第1期78-91,共14页地球科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.41430315);the National Basic Research Program of China (No.2014CB440905)

摘　　要：High temperature（1 270–1 550 oC） and high pressure（1.0 GPa） experimental studies on Re-bearing capabilities of pyrite, galena and sphalerite from typical Pb-Zn ore deposits were performed on a six-anvil apparatus. We observed microstructures of the quenched sulfides using scanning electron microscope（SEM） and analyzed compositions of the run products using both energy disperse spectroscopy（EDS） and electron probe microanalyzer（EPMA）. The results show that pyrite melt can dissolve much more metallic Re than galena and sphalerite melts, forming scattered acicular ReS_2 in the quenched matrix of pyrrhotite（Fe_（1-x）S）. The quenched matrixes of Fe_（1-x）S, PbS and ZnS generally contain less than 1.0 wt.% of Re and their Re-bearing capabilities seem to range as Fe_（1-x）S〉Pb S〉Zn S. However, Re partition coefficients between them are difficult to estimate, because Re distribution is inhomogeneous in the quenched sulfide matrixes.High temperature（1 270–1 550 oC） and high pressure（1.0 GPa） experimental studies on Re-bearing capabilities of pyrite, galena and sphalerite from typical Pb-Zn ore deposits were performed on a six-anvil apparatus. We observed microstructures of the quenched sulfides using scanning electron microscope（SEM） and analyzed compositions of the run products using both energy disperse spectroscopy（EDS） and electron probe microanalyzer（EPMA）. The results show that pyrite melt can dissolve much more metallic Re than galena and sphalerite melts, forming scattered acicular ReS_2 in the quenched matrix of pyrrhotite（Fe_（1-x）S）. The quenched matrixes of Fe_（1-x）S, PbS and ZnS generally contain less than 1.0 wt.% of Re and their Re-bearing capabilities seem to range as Fe_（1-x）S〉Pb S〉Zn S. However, Re partition coefficients between them are difficult to estimate, because Re distribution is inhomogeneous in the quenched sulfide matrixes.

关 键 词：PYRITE GALENA SPHALERITE high P-T experiment Re-bearing capability. 

分 类 号：P618.4[天文地球—矿床学]