广东凡口铅锌矿床硫、铅同位素组成特征及其地质意义  

Geochemical charateristics of the lead and sulfur isotope and geological

作　　者：韩英[1] 祝新友 王京彬[1,2,3] 王艳丽[1] 李顺庭[3] 程细音 杨毅[4] 付谜 

机构地区：[1]有色金属矿产地质调查中心,北京100012 [2]中色地科矿产勘查股份有限公司,北京100012 [3]北京矿产地质研究院,北京100012 [4]昆明理工大学,昆明650093 [5]中国地质大学(北京),北京100083

出　　处：《矿产勘查》2014年第2期267-274,共8页Mineral Exploration

基　　金：全国危机矿山找矿专项科研课题(编号:20089927)资助

摘　　要：广东凡口铅锌矿床是我国著名的大型—超大型铅锌矿床.赋矿围岩以碳酸盐岩为主,矿石以铅锌硫化物矿石为主.该矿床的铅同位素206pb/204pb组成为18.360～ 18.582,平均值为18.458;207 pb/204 Pb为15.759～ 15.848,平均值为15.759;208pb/204 Pb为38.829～39.32,平均值为39.039.δ34S值为3.8‰～27.9‰,主要集中在15‰～25‰之间,平均值为18.38‰.研究表明,矿石铅的来源于上地壳物质,硫源为海水来源,且可能经历了有机质的还原作用.Abstract：The Fankou lead-zinc deposit is a well-known large-sized or super-large sized lead-zinc deposit which is located at Dongtang town,Renhua county,Guangdong Province,China.The host rock is mainly carbonate,and the ore type is domintated by lead-zinc sulifides.The 206pb/204 Pb ratio ranges from 18.360 to 18.582 with an average value of 18.458.The 208 pb/204 Pb ratio ranges from 38.829 to 39.32 with an average of 39.039.The δ34S value ranges from 3.8‰ to 27.9‰ and concentrated at the value of 18.458.The study results of the lead and sulfur isotope indicate that the lead isotope in ores are mainly originated from the ancient crustal material.The sulfur in the ore is sourced from the seawater,and experienced the reduction process by the organic matter.

关 键 词：铅同位素 硫同位素 凡口铅锌矿床 广东 

分 类 号：P597[天文地球—地球化学]