新疆大学学报（自然科学版中英文）2025，Vol.42Issue(3)：374-384,11.DOI:10.13568/j.cnki.651094.651316.2024.05.30.0001
阳泉矿区8#煤层微量元素地球化学特征及地质意义
Geochemical Characteristics and Geological Significance of Trace Elements in No.8 Coal Seam of Yangquan Mining Area
摘要
Abstract
This paper selects the 8# coal seam in the Yangquan mining area of Qinshui coalfield as the research object,and systematically analyzes its trace element composition.According to the enrichment characteristics of rare earth elements(REE),the 8# coal seam in the study area is divided into class Ⅰ coal enriched with REE and class Ⅱ coal depleted with REE.Among them,class Ⅰ coal is characterized by enrichment of LREE,Li,Zr,Hf,etc.The feature that ash yield is positively correlated with trace elements,indicates that the effective input of inorganic minerals is the main reason for the enrichment of trace elements,and class Ⅰ coal is formed in acidic reduction environment under great influence of seawater.Compared with class Ⅰ coal,class Ⅱ coal is more enriched in Zr,Hf and deficient in Sr,Ba.This indicates that the influence of seawater is weakened during the sedimentation stage of class Ⅱ coal,that is,corresponding to a regressive process.The uplift of Yinshan ancient land may be the main dynamic mechanism leading to the regressive process.The retrograde causes a large range of surface rocks to emerge from the surface and suffer from strong weathering.The trace elements composition of 8# coal is controlled by the input of weathering products.The characteristics of trace elements indicate that the enrichment behavior of Li element in the sedimentary strata of the coal measures may be controlled by the input of inorganic products.The enrichment of lithium metal element in the 8# coal seam of Qinshui coalfield is accompanied by the enrichment of REE and class Ⅰ coal may have good ore-forming potential.关键词
沉积型锂矿/煤系沉积/微量元素/沁水煤田Key words
sedimentary lithium ore/coal measure deposition/trace elements/Qinshui coalfield分类
天文与地球科学引用本文复制引用
王晓霞,翟志伟,武志高,任伊苏,李志杰,李川麒,田政,王垚科..阳泉矿区8#煤层微量元素地球化学特征及地质意义[J].新疆大学学报（自然科学版中英文）,2025,42(3):374-384,11.基金项目
山西省科技厅自然科学基金青年项目"山西沁水煤田2#和8#煤层锂富集机制及对沉积型锂矿成矿潜力的研究"(202303021222295) （202303021222295）
山西省教育厅高等学校科技创新项目"沁水煤田沉积型锂矿成矿机制及潜力的研究"(2023L401) （2023L401）
山西省科技厅自然科学基金面上项目"沁水盆地深部煤层气储层非均质性精细定量评价技术研究"(202103021224333) （202103021224333）
山西能源学院高层次人才引进项目"沁水煤田战略金属锂矿成矿机制的研究"(ZB-2023010). （ZB-2023010）
