广东嵩溪银(锑)矿床地质地球化学及成矿模式  

GEOCHEMICAL CHARACTERISTICS AND MINERALIZATION MODEL OF SONGXI SILVER(ANTIMONY) DEPOSIT,GUANGDONG PROVINCE

作　　者：陈根文[1] 肖振宇 夏斌[1] 

机构地区：[1]中国科学院广州地球化学研究所成矿动力学实验室,广州510640 [2]广州市外经贸局,广州510200

出　　处：《地质找矿论丛》2008年第2期100-105,共6页Contributions to Geology and Mineral Resources Research

基　　金：国家973项目(编号2006CB403500);中国科学院广州地球科学研究所创新项目(GIGCX-04-03)资助

摘　　要：嵩溪银（锑）矿床赋存于下侏罗统金鸡组，矿石具脉状、角砾状构造，含大量硫盐矿物。围岩蚀变包括硅化、黄铁矿化、碳酸盐化、绢云母化及青磐岩化。主成矿阶段温度集中于150～260℃。硫、氢、氧同位素显示成矿物质主要来自深源和围岩，成矿流体既有岩浆水也有大气降水参与，成矿作用与早白垩世石英斑岩有关，嵩溪银（锑）矿床为与陆相次火山岩有关的浅成低温热液矿床。Songxi silver （antimony） deposit occurs in lower Jurassic Jinji formation . The orebodies are strictly controlled by faults and fractures and mostly take the forms of veins, stockwork. The ore is in vein, stockwork and breccia structure with many sulfosalt minerals. The epithermal ore elements such as Ag, As and Sb are the important character of Songxi Ag （Sb） deposit. Wall rock alternation includes Silication, seritization, pyritization and carbonation. Temperature of the main ore-forming stage is limited in range of 150-260℃. The S, H, O isotope data show that the S , Ag, Sb etc. are mainly derived from the deep-sourced magma and country rocks, the mineralizing fluid is from magmatic water and meteoritic water. Songxi Ag （Sb） deposit is of the epithermal deposit associated with continental facies subvolcanism and mineralization is related to Early Cretaceous porphyre.

关 键 词：地球化学 成矿模式 浅成低温热液矿床 嵩溪银(锑)矿床 广东省 

分 类 号：P611[天文地球—矿床学] P618.52[天文地球—地质学]