煤中稀土元素研究综述  

Summarization of REE in Coal

作　　者：沈明联 杨瑞东[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550025

出　　处：《中国煤炭地质》2016年第9期18-20,25,共4页Coal Geology of China

基　　金：贵州大学研究生创新基金(编号:研理工2016043);贵州省国土资源厅公益性、基础性基金项目(编号:黔国土资发[2015]34号)

摘　　要：研究煤中的稀土元素具有重要的的理论价值与应用价值。煤中稀土元素主要来源于陆源碎屑,成煤期火山灰沉降及成煤后热液流体的影响,都可能造成煤中稀土元素含量变高。稀土元素在煤中的赋存状态复杂,因各自的形成环境不同而不同。煤中稀土元素的含量主要受控于陆源碎屑的供给,并且还受成煤过程中的微环境和古地理条件的影响。侵入煤层的岩浆只有温度足够高才可以改变煤中稀土元素的分布模式,煤的变质作用对稀土元素的含量和迁移规律几乎没有影响。利用煤中稀土元素的地球化学特征可以识别成煤环境。To study the REE in coal has momentous theoretical and applied values. REE in coal is mainly come from terrigenous clastics; impacts from volcanic ash settlement during coal-forming stage and hydrothermal fluid can all cause REE content in coal increasing. Occurrence state of REE in coal is complex, different because of their different formation environment. Content of REE in coal is mainly controlled by terrigenous clastic supply, also impact from microenvironment and paleogeographic condition during coal-forming process. Only temperature is high enough, the intruded magma in coal seams can change REE distribution mode, coal metamorphism almost no impact on content of REE and their migration pattern. Taking advantage of geochemical characteristics of REE in coal can identify coal-forming environment.

关 键 词：稀土元素 物质来源 赋存状态 影响因素 指相意义 

分 类 号：P595[天文地球—地球化学] P618.11[天文地球—地质学]