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云南个旧东矿区西部凹陷带岩体内部蚀变花岗岩型Sn、Cu多金属矿床是近年来新发现的矿床.通过对矿床地质特征、蚀变分带特征、含矿岩体地球化学组成以及深部找矿远景的系统研究,认为该类矿床属于个旧东区花岗岩岩浆热液成矿多样性系统的组成部分,是产于花岗岩岩体边缘相-过渡相的蚀变花岗岩型多金属矿床,它属于岩浆期后中高温热液矿床.钾长石化、黄铁矿化、萤石化、电气石化与富集成矿密切相关;该类型矿床的发现使传统的“两楼一梯”成矿模式更新为“两楼一梯+地下室”的成矿模式,并对云南个旧深部找矿和接替资源补充具有重要的意义.
The intragranular alteration granite-type Sn and Cu polymetallic deposits in western sag zone of Gejiu East Mine Area, Yunnan Province, are newly discovered deposits in recent years.Through the analysis of the geological characteristics of ore deposits, the characteristics of alteration belts, the geochemical composition of ore-bearing rock masses and the deep study It is believed that this type of deposit belongs to the granitic magmatic hydrothermal metallogenetic diversity system in the Gejiu Eastern district and is an altered granite-type polymetallic deposit originating from the facies-transitional facies of the granitic body. It belongs to the magmatic stage Post-middle-high temperature hydrothermal deposit .Potassium feldspar, pyrite, fluorite, electrovalent petrochemical and mineralization are closely related; the discovery of this type of deposit so that the traditional “two stairs ” metallogenic model is updated “Two floors of a staircase + basement ” metallogenic model, and deep exploration of Gejiu, Yunnan Province, and replace the resources is of great significance.