准东煤田大井矿区煤中镓元素分布特征及富集机理浅析  

Analysis of the Distribution Characteristics and Enrichment Mechanism of Metal Gallium(Ga)Elements in Coal of Dajing Mining Area in Zhundong Coalfield,Xinjiang

作　　者：郑曦 徐仕琪[1,2] 何波 Zheng Xi;Xu Shiqi;He Bo(No.9 Geological Team,Xinjiang Bureau of Geology and Mineral Resources and Development,Urumqi,Xinjiang,830000,China;Xinjiang Bureau of Geology and Mineral Resources and Development,Urumqi,Xinjiang,830000,China)

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第九地质大队,新疆乌鲁木齐830000 [2]新疆维吾尔自治区地质矿产勘查开发局,新疆乌鲁木齐830000

出　　处：《新疆地质》2024年第3期479-485,共7页Xinjiang Geology

基　　金：自治区重大科技专项新疆煤系战略性金属矿产赋存分布规律与勘查关键技术研究项目05课题新疆煤系战略性金属矿产勘查开发技术应用示范工程(2022A03014-5);自治区自然科学面上基金(2023D01A106)项目联合资助。

摘　　要：新疆准东煤田大井矿区煤炭资源储量丰富,为结构简单稳定的巨厚煤层,勘探开发利用极高。前人对准东煤田镓、锗等元素含量进行了分析和总结,提出了准东具有寻找超大型煤-镓矿床的前景,引起了国内众多学者的关注。本文通过对大井矿区镓元素分布数据的收集整理,从横、纵向和叠合3个维度进行分析,发现区内北部井田B煤层煤中镓元素富机系数较高,极值达218μg/g。从沉积物源距离、古地理环境和构造特征等3个方面对全区B煤层煤中镓元素含量、分布和富集系数进行分析研究,认为接近物源区特定的地理位置和构造运动方面特殊的断层分布密集区域,是煤中镓元素富存系数较高的区域。本文对镓元素分布特征和富集机理之间的关系进行剖析,研究煤中镓元素的富集分布规律和赋存特征关系,为综合圈定煤中镓元素富集区提供可靠依据。全疆煤系关键金属的发现和研究,对聚焦实施新一轮找矿突破战略行动与矿产资源绿色发展,加快煤炭资源勘查进度和综合利用煤炭资源,具有重要的现实意义和战略前景。The Dajing mining area in Zhundong Coalfield,Xinjiang has abundant coal resources and is a structurally simple and stable thick coal seam,with extremely high exploration and development utilization.By organizing the distribution data of gallium elements in the Dajing mining area and analyzing it from three dimensions:horizontal,vertical,and superimposed,it was found that the gallium(Ga)element enrichment coefficient in coal seam B of the northern mining area is relatively high,with an extreme value of 218μg/g.From the three main aspects of controlling the enrichment of gallium element,the distance of sediment sources,paleogeographic environment,and structural characteristics are the reasons for the differences in the distribution and enrichment coefficients of gallium(Ga)element content in coal seams B in the entire region.A densely distributed area of faults with specific geographical locations and tectonic movements close to the source area is an area with a high abundance coefficient of gallium(Ga)elements in coal.This article analyzes the key relationship between the distribution characteristics and enrichment mechanisms of gallium element,studies the enrichment distribution patterns and occurrence characteristics of gallium(Ga)element in coal,and provides reliable basis for comprehensively delineating the enriched areas of metallic gallium(Ga)element in coal.The discovery and research of key metals in the Xinjiang coal series have important practical significance and strategic prospects for focusing on the implementation of a new round of breakthrough mining strategies and green development of mineral resources,accelerating the progress of coal resource exploration,and protecting and utilizing coal resources comprehensively through green development.

关 键 词：准东煤田 大井矿区 煤中镓元素 富集机理 

分 类 号：P618.11[天文地球—矿床学] O614.371[天文地球—地质学]