山西高家山铝土矿稀土元素地球化学特征及意义  

Geochemical Features of Rare-Earth Elements of the Bauxite Deposit in the Gaojiashan Region,Shanxi Province and their Implications

作　　者：叶枫[1,2] 董国臣[2] 孟兆国[1] 靳宁[1] 侯占国 杨全林[1] 刘晶[1] 

机构地区：[1]山西省地质调查院,山西太原030006 [2]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《地质与勘探》2015年第3期486-495,共10页Geology and Exploration

基　　金：山西省国土资源厅价款项目(T14120090402027419);山西省自然科学基金项目(2011021005-1)联合资助

摘　　要：山西沁源县高家山铝土矿床是山西省地质调查院于2013年发现的大型铝土矿床。本文通过对高家山铝土矿的研究,分析并研究铝土矿样品的稀土元素含量和地球化学特征,探讨稀土元素对于本区铝土矿成因和环境的指示意义。研究表明:该区铝土矿体的ΣREE总量较大,轻稀土元素相对富集,具有明显的Eu负异常;利用稀土元素图解大致反映出底板碳酸盐岩是本区铝土矿床的主要物质来源,铝土矿形成于被动大陆边缘地带海相或海陆过渡相环境。ΣREE与Al2O3含量相关性不大。本区矿床稀土元素含量达到或超过综合利用标准,具有巨大的潜在经济价值。The bauxite deposit in the Gaojiashan region of Shanxi Province was found by Shanxi Institute of Geological Survey in 2013. This work analyzed the content and geochemical features of the rare-earth elements in samples from this deposit,and pointed out their indicator significance for the genesis and formation environment. The research shows that the ΣREE amount of this bauxite deposit is large,light REE is relatively enriched,with obvious Eu negative anomalies. Using the diagram of REE,we suggest that the metallogenic source material of this deposit came from the carbonate rock of bottom plates. The bauxite deposit formed in a passive continental margin environment of marine or transitional facies. The ΣREE and Al2O3 contents are poorly correlated in the deposit. The REE contents in bauxite ores meet or exceed the standards of industrial comprehensive utilization,implying a tremendous economic potential.

关 键 词：铝土矿 高家山 稀土元素 地球化学 山西 

分 类 号：P618.45[天文地球—矿床学]