煤中有害微量元素富集的成因类型初探

A PRELIMINARY STUDY ON GENETIC TYPE OF ENRICHMENT FOR HAZARDOUS MINOR AND TRACE ELEMENTS IN COAL

媒中微量元素的富集受多种因素和多期作用控制，往往是多因素叠加的结果。文中对煤中有害微量元素富集的成因类型进行了初步探讨，根据煤中有害元素富集的主导因素，划分出5种媒中有害微量元素富集的成因类型：（1）陆源富集型；（2）沉积-生物作用富集型；（3）岩浆-热液作用富集型；（4）深大断裂-热浪作用富集型；（5）地下水作用富集型。对煤中有害微量元素的来源。运移、富集的地质地球化学背景进行深入研究，将有助于发展中国煤地球化学基础理论，也可为煤利用过程中的环境保护提供科学依据。

The enrichrnnt of hazardous minor and trace elements in coal was controled bymany factors and geological processes during different period, and often is the collgruence conapuence of many factors. This paper gives the preliminny results of study on the genetic typeof enrichment for hazardous minor and trace elements in ed. Based on the main controllingfactor, five genetic types of enrichment for hazardous minor and trace elements in coal wereproposed, namely: (1) source rock controlled type; (2) sedimentation-organism controlledtype; (3) rnagrna hydrothermalism controlled type; (4) deep-and-large fault-hydrothermalismcontrolled twe and (5) underground water controlled type. The further study on the geologicaland geochendcal background of the source, migration and enrichrnent for hazardous minor andtrace elements in coal will contribute to the basic theory of coal geochemistry, and it will alsoprovide the scientific evidence for harrnless utilization of coal.