Abstract:For discussing the characteristics and sources of the hydrothermal fluid in the gold mineralization zone in Hongshan complexes near Handan city, homogenization temperatures and salinities of the fluid inclusions in quartz vein from this area are tested, trace elements and Rb-Sr isotopes of the quartz vein are analyzed; the temperature and pressure, pH and Eh values of the fluid inclusions being taken are estimated. The results show that, fluid inclusions are mostly liquid and liquid-rich types with the homogenization temperatures varying from 206℃ to 305℃ and a mean of 254℃, and with the salinites varying from 7.17 wt%NaCl to 10.19 wt%NaCl and a mean of 8.36 wt%NaCl, they belong to the low-temperature and low-salinity hydrothermal fluid. Those inclusions are taken at a mean temperature of 303℃ and a mean pressure of 721×105Pa or a depth about 2.40km. The fluid enriches multiple trace elements and their contents are influenced by the temperature and pressure and so on, the Rb-Sr isotope ratios are higher than the main intrusive rocks, wall rock or ones around the complex area. These characteristics reveal that the hydrothermal fluid is obviously characterized by the meteoric water.