冀东-辽西金矿床稀土元素特征及其成矿作用探析  

Discussion on Characteristic of Rare Earth Elements and Mineralization of Gold Deposits,Eastern Hebei-Western Liaoning,China

作　　者：贾三石[1] 王恩德[2] 门业凯[2] 付建飞[2] 吴明刚[2] 

机构地区：[1]东北大学秦皇岛分校资源与材料学院,河北秦皇岛066004 [2]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《稀土》2014年第5期36-44,共9页Chinese Rare Earths

基　　金：中央高校基本科研业务费专项资金资助(N090601002);教育部博士点基金项目资助(20110042110032)

摘　　要：针对冀东-辽西主要金矿床成矿地质特征的差异性,选取了金厂峪、峪耳崖、二道沟和排山楼金矿20件金矿石样品的稀土元素和微量元素测试分析数据,其稀土配分模式图整体右倾-轻稀土富集型,显示了相似的成矿物质来源,Au-Bi的紧密相关性表明形成于中高温热液环境,部分样品稀土配分曲线的反倾和跳跃反映了该区矿床多因复成的特点,且稀土总量随金矿化的增强而逐步降低,可作为一种新的含矿性评价指标。According to the differences of metallogenic geological characteristics of gold deposits in Eastern Hebei and Western Liaoning,trace elements and rare earth elements（REE） of 20 gold ores samples from Jinchangyu,Yuerya,Erdaogou and Paishanlou gold deposits have been determined in order to discuss REE characteristics and mineralization.The close correlation between Au and Bi indicates that they formed in a medium-high hydrothermal environment.On the whole,the right deviation and light REE enrichment of chondrite-normalized REE（REEN） patterns imply that they have similar ore-forming material sources.However,the REEN patterns of some samples exhibit hump and leap style,which suggest that they are polygenetic compound gold deposits.The gradual reduction of total REE content with the increase of gold mineralization can act as a new evaluation index of ore potentiality.

关 键 词：冀东-辽西 金矿床 稀土元素 配分模式 多因复成矿床 

分 类 号：P611.1[天文地球—矿床学]