摘要
通过对吕家坨矿煤层及顶底板中稀土元素采样测试,全面分析了稀土元素含量、地球化学参数、分布模式,探讨了研究区煤中稀土元素的地球化学特征及来源。研究表明:研究区∑REE远高于世界煤及中国煤平均含量。不同煤层稀土元素分布模式基本一致,LREE相对富集,HREE相对亏损,山西组煤中的稀土元素高于太原组。稀土元素与反映陆源的元素相关性较好,主要来源为陆源碎屑矿物,与灰分弱正相关,以有机态和无机态相结合的方式赋存。
Through sampling and testing the coal seams and their roof and floor of Lvjiatuo Mine,the contents,geochemical parameters and distribution patterns of rare earth elements(REEs)were analyzed comprehensively,and the geochemical characteristics and sources of REEs in coal in the study area were discussed.The results were as follows:the Σ REE contents in the study area were much higher than that in the world coal and China coal.The distribution pattern ofΣREE in different coal seams was basically consistent,LREE was relatively enriched and HREE was relatively depleted.ΣREE in Shanxi Formation coal was higher than that in Taiyuan Formation.ΣREE had a good correlation with terrigenous elements.The main source was terrigenous detrital minerals,which had a weak positive correlation with ash and the occurrence was a combination of organic and inorganic states.
作者
张华
于海成
张冀
ZHANG Hua;YU Haicheng;ZHANG Ji(Hebei Provincial Coal Geological Exploration Institute,Hebei,Xingtai 054000)
出处
《中国煤炭地质》
2024年第4期30-37,共8页
Coal Geology of China
关键词
煤
稀土元素
地球化学
coal
rare earth element
geochemistry
作者简介
第一作者:张华(1985—),女,高级工程师,主要研究方向为煤系伴生矿产勘查。E-mail:286103970@qq.com。
