鸡西煤田煤的热液变质作用  

HYDROTHERMAL METAMORPHISM OF COAL IN JIXI COALFIELD

作　　者：胡善亭[1] 杨起[2] 潘治贵[2] 张惠良 

机构地区：[1]中南工业大学 [2]中国地质大学

出　　处：《煤炭学报》1996年第4期343-347,共5页Journal of China Coal Society

基　　金：国家自然科学基金资助项目;第30届国际地质大会重点课题基金资助项目

摘　　要：鸡西煤田煤的变质作用复杂，变质类型多，在煤田的北部条带西部二吕地区存在着煤的热液变质作用．在热液活动的周围产生了石英、方解石、黄铁矿等脉岩矿物，发生了碳酸盐化、硅化和高岭石化等热液蚀变．煤级的分布受热液活动的影响，而且煤的灰分及硫和磷元素含量都有所增加．石英脉中流体包裹体测温结果显示平均为２０７．３℃，包裹体稳定同位素分析表明，大气降水沿Ｆ１９断裂向下渗透后进行循环，将地下深处热量带入煤层，造成煤级升高．Coal metamorphism of Jixi coalfield is complicated.There are various types of coal metamorphism.Coal in Erlu area of the western part of northern belt coal bearing zone in Jixi coalfield experienced hydrothermal metamorphism.Quartz,calcite and pyrite veins and carbonation,silication and kaolinization occurred in this area.Distribution of coal ranks were controlled by hydrothermal fluid activity and the contents of ash,sulphur and phosphorus also increased.The average measured temperature of fluid inclusions in quartz vein was 207 3℃ Stable isotope analysis of fluid inclusion indicated that coal rank also increased due to the heat brought by circulation water penatrated through the fault of F 19

关 键 词：煤田 煤 热液变质作用 煤矿床 

分 类 号：P618.110.5[天文地球—矿床学]