黔西南卡林型金矿床稀土元素地球化学特征  

Geochemical Characteristics of Rare Earth Elements in Carlin Type Gold Deposit in Southwest of Guizhou Province

作　　者：杨治[1] 何明友[1] 刘伟[1] 柳建新[1] 代伦[1] 伦写[1] 写熹[1] 韩雪[1] 

机构地区：[1]成都理工大学核技术与自动化工程学院,四川成都610059

出　　处：《广东微量元素科学》2011年第11期59-66,共8页Trace Elements Science

摘　　要：分析了黔西南地区板其、丫他及戈塘等卡林型金矿床的(La/Yb)N、(La/Sm)N、∑REE及LREE/HREE等稀土元素的含量及参数特征。结果表明,该区金矿床相对富集LREE;该区戈塘金矿具有明显的MREE富集及正Eu异常的特点,表明成矿热液应该是一种还原性流体,来源于深部或至少经历过对富含斜长石源区的水-岩反应矿区容矿地层的沉积过程;对比滇黔桂地区玄武岩稀土元素的特征参数,发现金矿石稀土元素的特征参数部分类似于地层岩石,大多数类似于岩浆岩,说明成矿物质主要来源于岩浆岩,部分来自地层岩石。The content and parameter characteristics of （La/Yb） N, and other rare earth elements in Carlin - type gold deposit in analysed. It is discovered that the gold deposits of Banqi, Yata, （La/Sm） N, ∑REE, LREE/HREE Southwest of Guizhou province were Getang and other areas in Southwest Guizhou are relatively rich in LREE. The getang gold deposit features in distinct concentration of MREE and anomaly of positive Eu, which demonstrates that mineralizing fluid is likely to be a kind of reducing fluid which comes from deep down the earth or at least have been in the deposition process of water - rock reaction host strata in source zone riches in plagioclase. In comparison among the parameter characteristics of basaltic rare earth elements in yunnan, guizhou and guangxi, a discovery was made that the parameter characteristics of rare earth element in gold deposit bear a resemblance to the rocks in the earth＇s crust, mostly magmatic rock. The discovery suggests that ore - forming substances are mainly derived from magmatic rock, while partially derived from formation rock.

关 键 词：黔西南 卡林型金矿 稀土元素 REE参数 

分 类 号：P618.51[天文地球—矿床学]