摘要
运用仪器中子活化分析、电离耦合等离子体原子发射光谱、X射线荧光光谱、X射线衍射分析、带能谱仪的扫描电镜和逐级化学提取试验研究了贵州织金煤矿区上二叠统含煤岩系30号煤层中伴生元素的含量、赋存状态和矿物特征。结果表明,煤层中有高含量的脉状石英(9.4％),其δ30Si、δ18O值分别为0.6‰和15.4‰,表明脉状石英来源于硅质低温热液流体;脉状石英是煤中高含量Fe(2.31％)、Cu(356μg／g)、U(8μg／g)、Pd(2.1μg／g)、Pt(2.43μg／g)和Ir(0.006μg／g)的主要载体。
The influence of siliceous low-temperature hydrothermal fluid on the concentrations and occurrence modes of associated elements, and the mineralogical characteristics of the late Permian No. 30 coal seam from the Zhijin Coalfield in western Guizhou Province were studied by this paper using instrumental neutron activation analysis, inductively-coupled plasma-mass spectrome try, inductively-coupled plasma-atomic emission spectrometry, X-ray fluorescence, powder X-ray diffraction, scanning electron microscopy equipped with energy-dispersive spectrometry, and sequential chemical extraction experiment. This study indicates that the No. 30 coal seam contains a very high content of veined quartz (9. 4%) whose isotopic values are 0. 6‰ for 在 δ0Si and 15. 4‰ for δ18O respectively. It is believed that the veined quartz was originally derived from siliceous low-temperature hydro thermal fluid and is the dominant source for the high concentrations of Fe (2. 31%) , Cu (356 μg/g), U (8 μg/g), Pd (2. 1 μg/ g), Pt (2. 43 μg/g) , and Ir (0. 006 μg/g) in the coal seams.
出处
《矿物岩石地球化学通报》
CAS
CSCD
2005年第1期39-49,共11页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金资助项目(40202014
40472083)973计划资助项目(2003CB214607)863计划资助项目(2004AA649200)资助
