河南冷水北沟铅锌矿地质地球化学特征及成因探讨  

Geological-geochemical features and genesis of Lengshuibeigou Pb-Zn deposit in Henan

作　　者：王长明[1] 张寿庭[1] 邓军[1] 孙艳霞河南省地质矿产勘查开发局第一地质调查队 燕长海[1] 叶会寿[2] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室 [2]中国地质科学院矿产资源研究所,北京100037

出　　处：《矿床地质》2007年第2期175-183,共9页Mineral Deposits

基　　金：教育部科学技术研究重点项目(03178);教育部跨世纪人才基金项目;国家自然科学基金项目(40172036);中国地质调查局国土资源调查项目(20023030)的联合资助

摘　　要：冷水北沟铅锌矿床赋存于元古界栾川群和管道口群内,矿体受断裂破碎带及矽卡岩带的控制。矿石类型可分为热液脉型和矽卡岩型,矿体围岩蚀变强烈。根据矿床地质-地球化学特征,结合矿石的矿物共生组合、铅和硫同位素组成及成矿年龄、包裹体成分及特征,认为该矿床的矿源为岩浆岩,成矿溶液主要来自岩浆水和大气降水的混合溶液,矿床成因类型属中高温条件下形成的热液脉型-矽卡岩型矿床。The Lengshuibeigou lead and zinc deposit occurs in Proterozoic Luanchuan Group and Guandaokou Group, with ore bodies strictly controlled by the ductile shear zone and the skarn zone. The lead-zinc ores can be classified into the hydrothermal vein type and the skarn type with strong wall rock alteration. It is held that the mineralization resulted from the magmatic activity, as evidenced by the features of ore geology, geochemistry, mineral assemblage, lead and sulfur isotope, mineralization age and composition of inclusions in minerals. The ore-forming solution was a mixture of magmatic water and meteoric water. The deposit is genetically of the hydrothermal vein type and skarn type formed at medium-high temperature.

关 键 词：地球化学 热液脉型 矽卡岩型 矿床成因 冷水北沟 

分 类 号：P618.42[天文地球—矿床学] P618.43[天文地球—地质学]