【摘要】 对洪塘煤矿乐平组主采煤层中微量元素和稀土元素的地球化学特征分析研究结果表明,煤中微量元素的平均含量高于中国煤的平均值,亦高于世界煤的平均值;与地壳的平均含量相比,煤中比较富集的元素有Ge、U、As。稀土元素含量为高于中国陆壳稀土元素总量均值和世界煤中稀土元素总量均值,低于中国煤中稀土元素总量均值;稀土元素分布模式基本一致,均呈左高右低的宽缓"V"型曲线。更多还原

【Abstract】 The trace and rare earth elements geochemistry of coal seam of Leping Formation in Hongtang coal mine are analyzed in this paper.Research shows that firstly,Ga,U,Cl,F,As,Th.trace elements have higher content compared with average data of China;the average content of Ga,U,F As and Th is higher than that in the world coal;Ge,U and As are obviously richer than the average content of the earth’s crust.The content of rare earth elements is higher than the mean value of total rare earth elements in China’s upper continental crust and world coal,and lower than the mean value of total rare earth elements in Chinese coal;The distribution patterns of REE are basically the same,showing a broad "V" curve with left high right low,LREE is obviously enriched,and HREE is relatively depleted,Negative anomalies at Eu indicate that the main source of land is clastic sediments during coal forming,REE are mainly found in minerals.更多还原