吉林浑江金矿床的形成条件与成矿机制研究  

Study on condition of the forming of Hun Jiang Gold Deposit of Jilin Province and the mechanism of its mineralization

作　　者：杨言辰[1,2] 于性贤[1,2] 辛国才 

机构地区：[1]长春科技大学 [2]吉林浑江金矿

出　　处：《黄金》1997年第5期3-8,共6页Gold

摘　　要：吉林浑江金矿是近年来在我国东北地区发现的一种新类型金矿床。矿化严格受荒沟山“Ｓ”型构造下盘含矿碳酸盐地层控制。矿石包体研究与热力学计算表明成矿温度为１８２～２３０℃，压力为５６６×１０７～６１６×７Ｐａ，成矿流体具有中～弱碱性、强还原性地下热卤水特征。元素地球化学研究认为含矿碳酸盐建造是金矿化矿源层；金以［Ａｕ（ＨＳ）］－形式活化进入溶液，促使金沉淀的机制是溶液压力降低，还原硫活度下降及有机质吸附的作用。Hun Jiang Gold Deposit of Jilin Province is a new type one found in recent yeat at Northeastern Region of China.Its mineralization is controlled strictly by carbon bearing carbonate strata in the lower wall of S type tectonics of Huang Gou Mountain.It shows from study of ore enclosure and thermodynamic calculation that its mineralization temperature is 182～230℃,the pressure is 5.66×10 7～6 16×10 7 Pa and the mineralizing fluid is provided with medium weak alkaline and strong reducing property of underground thermal brine.Through study of elementary geochemistry,it is believed that the ore containing carbonate formation is the sourec bed of gold mineralization,gold is activated in the form of - coming into solution and the mechanism of gold precipitation is the lowering of solution pressure and activity of reduced sulfur as well as the adsorption of organic matter.

关 键 词：金矿床 物理化学条件 成矿机制 矿床成因 

分 类 号：P618.510.1[天文地球—矿床学] P618.510.5[天文地球—地质学]