The ore-forming fluid has a specially high ratio of Th/ U, indicating obvious enrichment of Th compared with U, which probably reflects that halogen complex is the main carrier for the migration of mineral substance in the fluid. 成矿流体具有异常高的Th/U值,表明Th相对U的明显富集,这可能反映了流体中卤素为主要的矿物质迁移载体。