广西晚二叠世合山组聚煤盆地中锂资源特征分析  

Analysis onLate Permian Heshan Formation Coal Accumulation Basin Lithium Resource Features in Guangxi

作　　者：廖家隆 韦梦蝶 梁兴东 Liao Jialong;Wei Mengdie;Liang Xingdong(Guangxi Bureau of Coal Geological Exploration,CNACG,Liuzhou,Guangxi 545005)

机构地区：[1]广西煤炭地质局,广西柳州545005

出　　处：《中国煤炭地质》2020年第9期122-127,共6页Coal Geology of China

基　　金：广西自然科学基金面上项目(2019GXNSFAA185062);中国煤炭地质总局科研项目(ZMKJ-2018-10)。

摘　　要：煤系常共伴生Li、Ga、Nb、Sc等三稀元素,是潜在的巨大沉积型锂资源库。煤系中锂资源的特征研究,对丰富发展锂矿成矿理论和实现煤炭资源的综合利用意义重大。通过对广西扶绥煤田和贤按煤田的合山组含煤岩系进行系统取样测试,从样品的常量元素及微量元素含量的分析入手,结合广西晚二叠世聚煤盆地的地球化学、矿物学、年代学资料,探讨了煤系中锂的赋存状态、富集控制因素和综合利用前景。结果表明,两个煤田的煤系中锂均有一定的工业前景,高锂样品主要来源于铝土岩、煤及炭质泥岩;Li和Al2O3关系密切,二者呈正相关关系,与其他成分关系不明显;煤系中锂的富集具有多成因多阶段的特征;煤系中提锂在实验和工业上的进展为煤系中锂资源的综合利用提供了广阔前景。Coal measures have commonly coexisted and associated Li,Ga,Nb and Sc rare elements,thus a potential huge sedimentary lithium resource conservator.The study on lithium resource features in coal measures has significance to enrich and develop lithium metallogenic theory and realize coal resource integrated utilization.Through the Heshan Formation coal-bearing rock series systematic sampling test in Fusui and Xian’an coalfields,started from sample macroelement and microelement content analysis combined with geochemical,mineralogical and chronological data from late Permian coal accumulation basin in Guangxi have discussed coal measures lithium hosting state,enrichment controlling factors and integrated utilization prospect.The results have shown that coal measures lithium in the two coalfields all have certain industrial prospect.Lithium high samples are mainly from allite,coal and carbargillite.Relationship between Li and Al2O3 is close and positively correlated,while with other components is not clear.Lithium in coal measures has multi-origin and multi-staged features.Lithium extraction experimental and industrial progresses have provided broad prospect on coal measures lithium resource integrated utilization.

关 键 词：煤系中锂 锂资源特征 前景分析 合山组聚煤盆地 

分 类 号：P618.11[天文地球—矿床学]