淮南丁集煤矿A组煤中稀土元素地球化学特征  

Geochemical Features of REE in Coal Group A in Dingji Coalmine,Huainan

作　　者：张时珍[1] 刘桂建[1] 严智操[1] 吴斌[1] 

机构地区：[1]中国科学技术大学地球与空间科学学院中国科学院壳幔物质与环境重点实验室,安徽合肥230026

出　　处：《中国煤炭地质》2012年第1期7-9,20,共4页Coal Geology of China

基　　金：由国家自然科学基金(40873070);安徽省科技攻关项目(11010401015);淮南矿业集团科技创新项目联合资助

摘　　要：采用电感耦合等离子质谱(ICP-MS)对淮南丁集煤矿A组煤18个煤样、9个顶底板样品中稀土元素进行测试分析,研究了稀土元素的含量变化及其地球化学特征。结果表明:丁集煤矿A组煤稀土元素相对富集,其中元素Tm是邻区淮北煤和中国煤中近10倍。且LREE明显富集,HREE相对亏损,δCe较明显的负异常,说明成煤沼泽环境受海水影响较大,且1煤到3煤受海水影响逐渐减弱。Using inductively coupled plasma mass spectrometry （ICP-MS） method carried out REE analysis of 18 coal samples and 9 roof and floor samples in coal group A, Dingji coalmine, Huainan, studied REE content variations and geochemical features. The result has demonstrated that： REE are relatively enriched in coal group A, Dingji coalmine, in which, the thulium （Tm） content is about 10 times higher than that in neighboring Huaibei coal and other Chinese coals. Besides, the LREE are obviously enriched, and HREE relatively deficient, 8Ce rather negatively anomalous, thus illuminated the coal-forming bog environment was impacted by sea water relatively great, and during the deposition stage of coal seams No.1 through to No.3, the impact from sea water gradually weakening.

关 键 词：稀土元素 地球化学 淮南煤田 A组煤 

分 类 号：P618.11[天文地球—矿床学] P595[天文地球—地质学]