滇东南南部多金属成矿带找矿潜力分析  

Ore Prospecting Potential of the Polymetallic Metallogenic Belt in the South of SE Yunnan

作　　者：丁星妤[1,2] 戴塔根[1] 刘晓玮[2] 

机构地区：[1]中南大学地学与环境工程学院,长沙410083 [2]云南省国土资源规划设计研究院,昆明650216

出　　处：《吉林大学学报（地球科学版）》2012年第6期1730-1739,共10页Journal of Jilin University：Earth Science Edition

基　　金：中国地质调查局项目(1212010813024;1212010881627)

摘　　要：滇东南南部成矿带是云南省重要的金属成矿带之一,锡、钨、铅、锌、银多金属硫化物矿床主要赋存于中寒武统、下二叠统和中三叠统的碎屑岩及碳酸盐岩地层中,空间上多围绕个旧、薄竹山和老君山3个较大的花岗岩体分布。在近年矿产勘查中区内已发现锡钨等金属矿床53处。在区内成矿地质特征、地球化学特征、锡钨等金属矿成矿规律的基础上,对个旧卡房铜锡矿床、麻花坪南秧田钨矿床、蒙自白牛厂铅锌银矿床和小锡板锑矿床4个典型矿床特征进行了分析。根据有利成矿地质条件、化探异常信息,将具有一定资源潜力和找矿前景的地区划为5个成矿远景区:个旧锡、钨、铜成矿远景区,薄竹山—白牛厂钨、铅、锌、银成矿远景区,老君山—麻栗坡钨、锡成矿远景区,砚山铜、铅、锌成矿远景区和西畴锑成矿远景区;预测了锡金属远景储量达133万t,钨(WO3)远景储量达112万t,铅锌矿金属远景储量达942万t,铜金属远景金属储量达326万t,锑金属远景金属储量达30万t。结果表明,该成矿带锡钨等矿产找矿潜力巨大。The metallogenic belt in the south of SE Yunnan is one of the important polymetallic belts in Yunnan Province.In this belt,such polymetallic sulfide deposits as Sn,W,Pb,Zn,Ag are mainly hosted in the clastic and carbonate rock formations of Cambrian,Devonian,Permian and Triassic,and distributed around three large granitic intrusions,Gejiu,Bozhushan and Laojunshan.Fifty three Tin-tungsten and other metal deposits have been found in recent years by ore exploration in the area.Based on studies of geology,geochemistry and metallogenic regularity of known deposits in the area,such four typical deposits,Kafang Cu-Sn,Nanyangtian W,Bainiuchang Pb-Zn-Ag and Xiaoxiban Sb deposits,have been analyzed.According to favorable geological conditions,geochemical anomalies,five ore prospecting regions are defined,including Gejiu Sn-W-Cu,Bozhushan-Bainiuchang W-Pb-Zn-Ag,Laojunshan-Malipo W-Sn,Yanshan Cu-Pb-Zn,Xichou Sb ore prospecting regions.The forecasted resource reserves,includes 1.33 million tons of Sn,1.12 million tons of WO3,9.42 million tons of Pb and Zn,3.26 million tons of Cu as well as 0.3 million tons of Sb.It can be concluded that there is great tin-tungsten and other metals ore prospecting potential in this area.

关 键 词：滇东南南部成矿带 金属矿床 远景区 找矿潜力 

分 类 号：P612[天文地球—矿床学]