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四川会理拉拉地区位于扬子地台西缘川滇南北向构造带与东西向河口复背斜交汇处,是我国西南地区重要的铜矿产地。区内广泛分布一套古元古代浅变质火山-沉积岩系,并可细分为三个火山喷发-沉积旋回(Zhu et al.,2013),其中,每一旋回的变质火山岩段通常赋存铁氧化物铜金矿床(简称IOCG,Zhu and Sun,2013),而变质沉积岩段则赋存沉积岩中的层状铜矿床(简称SSC,Zhu,2014)。
Sichuan Huili Lala area is located in the western margin of the Yangtze platform of Sichuan-Yunnan north-south tectonic belt and east-west syncline anticline interchange is an important copper mine in southwest China. A series of Paleoproterozoic metamorphic volcano-sedimentary rocks are widely distributed in the area and can be subdivided into three volcanic eruptions and sedimentary cycles (Zhu et al., 2013). Often, each cycle of metamorphic volcanic rocks usually contains iron Oxide copper and gold deposits (IOCG, Zhu and Sun, 2013), while the metamorphic sedimentary rocks are stratiform copper deposits in sedimentary rocks (SSC, Zhu, 2014).