Study of Fluid Inclusions in the Yixian Fluorite Deposits, Liaoning

摘要

The fluorite deposits occur mainly in carbonate rocks of Mesoproterozoic Changcheng system and Jixian system in Yixian, Liaoning Province. The tectonocontrolling are mainly NW-striking compressive shear faults. Based on the study of characteristics of fluid inclusions and the composition of both vapor and liquid phases of fluid inclusions, several physico-chemical parameters of mineralization such as temperature, salinity, density, composition of ore fluid and isotope of H, O were obtained. The research indicates that; the temperatures and salinities of the ore fluid are 130-150℃, 0.3wt(NaCl)%-2.4wt (NaCl)%, respectively, the ore fluid has oxidizability.