论文部分内容阅读
用有机地球化学方法对矿区与右江盆地有机质的分析研究表明,容矿的大厂层有机碳与锑含量相对较高;有机包裹体主要是气态烃包裹体与沥青包裹体,在气态烃包裹体中含0%~30%的液态烃,发暗黄色荧光;有机气相成分中四种烷烃甲烷、乙烷、丙烷、丁烷均有显示;从主成矿期萤石中的沥青及右江盆地再沉积火山碎屑岩中的干酪根的生物标志物测定结果来看,二者在正烷烃、类异戊二烯烷烃、萜烷与甾烷标志物特征上较为接近,表明右江盆地沉积物中的有机质与锑矿中的有机质有亲缘关系。模拟实验证明原油对锑有较强的萃取迁移能力;而有机质在锑成矿过程中主要起三方面的作用:淋滤、萃取迁移及还原沉淀。
The organic geochemical method has been used to study the organic matter in the mining area and the Youjiang basin. The results show that organic carbon and antimony content are relatively high in the main plant of the ore-dressing. The organic inclusions are mainly gaseous hydrocarbon inclusions and bitumen inclusions. The liquid contains 0% -30% of liquid hydrocarbons and emits a dark yellow fluorescence. In the organic gas phase, four kinds of alkanes, such as methane, ethane, propane and butane, are displayed. From the main mineralization stages, fluorite bitumen and Youjiang The biomarkers of kerogen in the re-deposited volcaniclastic rocks of the basin show that they are close to each other in the characteristics of n-alkanes, isoprenoids, terpanes and steranes, indicating that the sediments of the Youjiang Basin The organic matter in the matter is related to the organic matter in the antimony mine. Simulation experiments show that crude oil has a strong capability of extracting and transporting antimony, while organic matter mainly plays three roles in the process of antimony mineralization: leaching, extraction, migration and reduction.