云南德钦羊拉路农铜矿床矿石矿物特征及成因

摘要

Lunong copper deposit is one of the typical copper deposits in the central area of Yangla mining area.The geological characteristics and different ore-bodies or mineralized bodies of Lunong cop-per deposit of Yangla mining area are analyzed,the ore mineral characteristics and ore deposit genesis of Lunong copper deposit of Yangla mining area are also researched systematically by adopting the micro-scopic identification method and electron probe method.The research results show that:①the ore types within Lunong copper deposit is various,the skarn type ore is the main types of ores,the main metal sul-fide ores are chalcopyrite,pyrrhotite,pyrite and magnetite,the ores structure are mainly included mas-sive structure,disseminated structure and vein-net vein structure,the ores textures are mainly included euhedral-subhedral granular texture,metasomatic filling texture and including texture;②the metallogenic periods of Lunong copper deposit can be divided into skarn period,quartz-sulfide period and supergene period,the characteristics of porphyry-skarn type deposit is displayed,the late tectonic hydrothermal su-perimposed mineralization is significance.The above research results have some reference for the copper deposit prospecting work in Yangla mining area.%路农铜矿床是位于羊拉矿区中部的典型铜矿床之一。通过分析该矿床地质特征及不同矿（化）体特征，并利用镜下鉴定及电子探针等方法，系统研究了矿床内矿石矿物特征及矿床成因，结果表明：①矿床内矿石类型多样，主要为矽卡岩型矿石，矿石主要金属硫化物为黄铜矿、磁黄铁矿、黄铁矿及磁铁矿，矿石构造主要为块状构造、浸染状构造和脉状-网脉状构造，矿石结构主要为自形—半自形粒状结构、交代充填结构及包含结构；②矿床成矿阶段可划分为矽卡岩期、石英-硫化物期及表生期，显示出斑岩-矽卡岩型矿床的典型特征，后期构造热液叠加成矿作用显著。上述分析成果对于区内铜矿床找矿工作有一定的参考价值。