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四川会理拉拉铜矿床位于扬子地块西南缘,康滇地区中段,前人(李泽琴等,2002)研究认为其为典型的铁氧化物-铜-金(IOCG)矿床。多年来,已有大量构造、矿物岩石、地球化学、成矿作用机理、成矿动力学背景等方面的研究成果,但是对于其成矿物质来源方面一直存在诸多争议。本文通过对拉拉矿床的围岩、蚀变岩石、矿石进行了元素地球化学特征分析,探讨了该矿床的成矿物质来源及其成因。
The Lala copper deposit in Huili, Sichuan Province is located in the southwestern margin of the Yangtze block and in the middle of the Kangdian region. Previous studies by Li et al. (2002) suggested it to be a typical iron oxide-copper-gold (IOCG) deposit. Over the years, there has been a large number of research results on the structure, mineral rock, geochemistry, metallogenic mechanism, metallogenic dynamics background, but there have been many controversies about the source of metallogenic materials. In this paper, the elemental geochemical characteristics of the surrounding rock, altered rock and ore in the Lala deposit are analyzed, and the origin of the metallogenic material and its genesis are discussed.