云南宣威来宾B_1煤层煤中矿物赋存成因研究

Occurrence and Origin of Minerals of B_1 Coal in Xuanwei Laibin in Yunnan Province

通过使用光学显微镜、X射线衍射仪(XRD)以及带能谱的扫描电镜(SEM-EDS),分析了云南来宾矿区B1煤层煤样中矿物组成及赋存状态,并对其成因进行研究。结果表明,来宾煤中主要矿物为石英、鲕绿泥石和方解石,且均为自生成因。说明泥炭沼泽在煤炭堆积早期受到了较为强烈的热液流体影响。

Mineral composition and occurrence of the B1 coal in Laibin Mine was determined by optical microscope, X-ray diffraction(XRD) and scanning electronic microscopy coupled with energy dispersive spectroscopy(SEM-EDS), and to study the origin of the minerals. Results showed that minerals in the Laibin coals are mainly consisted with authigene quartz, chamosite and calcite. It means that hydrothermal fluids plays a significant role during peat accumulation and the early stage of diagenesis.