阳泉矿区8#煤层微量元素地球化学特征及地质意义

王晓霞; 翟志伟; 武志高; 任伊苏; 李志杰; 李川麒; 田政; 王垚科

doi:10.13568/j.cnki.651094.651316.2024.05.30.0001

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阳泉矿区8#煤层微量元素地球化学特征及地质意义

新能源与绿色生产·庆祝新疆维吾尔自治区成立70周年专题 | 更新时间：2026-01-23

- 阳泉矿区8#煤层微量元素地球化学特征及地质意义
- 阳泉矿区8#煤层微量元素地球化学特征及地质意义
- 新疆大学学报（自然科学版中英文） 2025年42卷第3期页码：374-384
- 作者机构：
  
  1. 山西能源学院地质与测绘工程系
  2. 山西省三气共采省技术创新中心
  3. 中国矿业大学矿业工程学院
- 作者简介：
- 基金信息：
  
  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）;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）;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）;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）
- DOI：10.13568/j.cnki.651094.651316.2024.05.30.0001
  中图分类号： P618.11
- 纸质出版：2025
- 稿件说明：
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[1]王晓霞,翟志伟,武志高,等.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(03):374-384.
[1]王晓霞,翟志伟,武志高,等.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(03):374-384. DOI： 10.13568/j.cnki.651094.651316.2024.05.30.0001.

DOI：10.13568/j.cnki.651094.651316.2024.05.30.0001.

摘要

选取沁水煤田阳泉矿区8#煤层为研究对象，对微量元素组成进行系统分析．根据稀土元素（REE）富集特征，将该区8#煤分为富集REE的Ⅰ类煤和亏损REE的Ⅱ类煤．Ⅰ类煤表现为LREE、Li、Zr、Hf等元素富集的特征，灰化率与微量元素存在较好的正相关性．这表明无机矿物的输入可能是导致微量元素富集的主要原因，Ⅰ类煤可能形成于受海水影响较大的酸性还原环境．相比Ⅰ类煤，Ⅱ类煤更富集Zr、Hf元素，亏损Sr、Ba元素，这一特征指示Ⅱ类煤沉积阶段海水影响作用减弱，即对应一次海退过程，阴山古陆隆起可能是导致海退的主要动力学机制．海退导致大范围表壳岩石岀露地表，其风化产物的输入较大程度影响其沉积地层微量元素组成．该煤系沉积地层中Li元素富集行为可能受控于无机物的输入．沁水煤田8#煤层中Ⅰ类煤金属元素Li的富集伴随着REE的富集，具有良好的成矿潜力．

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 Ⅱcoal depleted with REE. Among them

class I coal is characterized by enrichment of LREE

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 Ⅱcoal 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 Ⅱcoal

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

Keywords

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