内蒙古阿刀亥矿晚古生代煤的微量元素和稀土元素地球化学特征  

Geochemistry of trace and rare earth elements in the Late Paleozoic Coal from Adaohai Mine,Inner Mongolia

作　　者：邹建华[1,2] 刘东[1,2] 田和明[1,2] 刘峰[1,2] 李甜[1,2] 杨洪永[1,2] 

机构地区：[1]外生成矿与矿山环境重庆市重点实验室(重庆地质矿产研究院),重庆400042 [2]煤炭资源与安全开采国家重点实验室重庆研究中心,重庆400042

出　　处：《煤炭学报》2013年第6期1012-1018,共7页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(40672102)

摘　　要：利用电感耦合等离子体质谱(ICP-MS)、X射线荧光光谱(XRF)、工业分析等方法对内蒙古阿刀亥矿煤的微量元素和稀土元素地球化学特征进行了研究,并根据某些微量元素的含量及比值探讨了研究区的成煤环境。研究发现,与中国上陆壳相比阿刀亥矿煤中比较富集Cl,Sc,Ge,Se,Zr,Mo,Cd,In,Sb,Te,Hf,Hg,Pb,Bi和REE。稀土元素分布模式表明LREE明显富集,HREE相对亏损,Eu负异常明显,且轻稀土元素之间的分馏程度较高,重稀土元素之间的分馏程度较低,稀土元素可能主要赋存于黏土矿物中。δEu,Sr/Ba,V/(V+Ni),V/Ni,Ni/Co值及S的含量总体上反映出阿刀亥矿泥炭的沉积环境为内陆淡水还原环境,间或受到海水的影响。The trace and rare earth element geochemistry of coal in Adaohai mine were studied using the methods of inductively coupled plasma mass spectrometry, X-ray fluorescence and proximate analysis. On the basis of the contents and ratios of some elements, the peat-accumulating environment of studying area was discussed. The results show that elements including C1, Sc, Ge, Se, Zr, Mo, Cd, In, Sb, Te, Hf, Hg, Pb, Bi and REE are enriched, compared with the av- erage content of Chinese upper crust. The rare earth element patterns indicate that the light rare earth element is en- riched while the heavy rare earth element is deficit and show a clear Eu negative anomaly. The fractionation of light rare earth element is high, and that of the heavy rare earth element is low. The occurrence of rare earth element is probably related to clay minerals. The ratios of δEu, Sr/Ba, V/（ V＋Ni）, V/Ni, Ni/Co and S illustrate that the peat-ac- cumulating environment of Adaohai is in-lake fresh water,intermittenly affected by sea water.

关 键 词：煤 微量元素 稀土元素 阿刀亥矿 

分 类 号：P59[天文地球—地球化学]