摘要
该区金矿产于寒武系水口群浅变质岩系砂页岩内，矿化类型主要有蚀变岩型和石英脉型两大类。矿体主要受近东西向和北东向两组脆─韧性剪切带控制。硫同位素组成特征表明，硫源应以深源同熔岩浆热液为主，部分来自地层；氢、氧同位隶组成特征反映成矿溶液以岩浆水为主，混有少量变质水和大气降水；铅同位索组成特征表明铅源以深源为主，混有少量壳源物质，矿床具多源成矿特点。硫、铅、氢氧等稳定同位素研究结合矿床地质特征表明，该区金矿具多源、多成因及多期次成矿特征，矿床成因主要有岩浆热液、变质热液和复合叠加成矿，而以后者为主。
The gold deposits in this region occured in sandshale of Cambrian epimetamorphic rockseries of Shuikou Group．Mineralization can be mainly classified into two types ： altered rocktype and quartz—vein type. Ore bodies were controlled by two groups of brittle—ductileshear zones trending nearly to east—west and northeast．Sulfur isotopic constitution indicatesthat sulfur source mainly came fromanatectic syntexis magmatic hytrothermal solution，partlyfrom strata。 Hydrogen and oxygen isotopic compositions reflects that the ore—forming solu-tion is mostly magmatic water，mixed with a few of metamorphic and meteorological wa-ter．Lead isotopic constitution indicates that lead source is mostly anatectic source，mixedvvith a few of crustal source material． Gold deposit is characterized by multiple source miner-alization. Stable isotopes of sulfur, lead，hydrogen and oxygen etc.and geological feature ofore deposit indicate that the gotd deposit in this district is characterized bymultiple source，multiple origin and multiple stage of mineralization. Ore deposiy origin includs magmatic hy-drothermal，metamorphic hydrothermal composite surperimposition，the latter is the princi-pal.
关键词
金矿床
控矿作用
稳定同位素
矿化
gold deposits in the east of Guangxi ore—controlling action stable iso-topes source of metallogenic material ore deposit origin
