煤中铂族元素赋存的地质研究进展

The Geological Researched Status of Platinum-Group Elements in Coal

对煤中铂族元素的质量分数、赋存状态、来源及其异常富集的地质因素等进行了详细的阐述,并提出了今后研究的重点。研究资料表明,煤中不仅普遍含有铂族元素,甚至可以产生异常富集现象;铂族元素常以水溶态、离子交换态、碳酸盐态、有机态、硅铝化合物态、硫化物态等形式赋存于煤中;导致煤中铂族元素异常富集的机理主要有:岩浆热液作用、低温热液作用和同沉积火山灰作用3种。

Research shows that platinum-group elements（PGE）exist in coal. The paper expatiates the concentrations, modes of occurrence, origins and anomalous enrichment of geological factors of PGE in coal. It is assumed that the coal not only contains PGE, but also can produce the phenomenon of anomalous enrichment. The PGE in coal mainly exists in water-leachable , ion-exchangeable , carbonate-bound ,organic-bound , silicate associations and sulfide association state. The study reveals three main mechanisms of the PGE in coal abnormal accumulation： magmatie hydrothermal, low-temperature hydrothermal and synsedimentary volcanic ash role. Finally, the paper brings forward several important scopes for future research.