四川会理拉拉地区是我国重要的IOCG(铁氧化物铜金矿床)产地(李泽琴等,2002;朱志敏等,2009),产出有落凼铜矿、石龙铜矿、老虎山铜矿、红泥坡铜矿等大中型铜矿。目前已发现的这些铜矿均赋存于古元古河口群上部变质火山-沉积岩系,而下部层位由于出露较差,长期未引起重视,地质找矿进展一直未有突破。近年来,通过野外地质调查工作,我们在河口群下部的白云 Sichuan Huili Lala area is an important IOCG (iron oxide copper-gold deposit) producing area in China (Li Zeqin et al., 2002; Zhu Zhimin et al., 2009), with outputs of the Taipa Copper Mine, Shilong Copper Mine, Hongni slope copper and other large and medium-sized copper mine. The copper deposits that have been discovered so far occur in the upper metamorphic volcano-sedimentary rock series of the ancient Paleoksugou Group. However, due to the poor exposure in the lower strata, these copper mines have not paid much attention for a long time, and the progress of geological prospecting has been unbroken. In recent years, through the field geological survey work, we are in the lower part of the estuary clouds