鸡西柳毛石墨矿碳质来源及铀、钒的富集机制  

Origin of carbon and concentration of uranium and vanadium from Liumao graphite formation in Jixi

作　　者：李光辉[1] 黄永卫[1] 吴润堂[2] 徐大杰 

机构地区：[1]中国地质大学地球科学与资源学院 [2]核工业243大队,内蒙古赤峰024006 [3]中国化工地质矿山总局吉林地质勘察院,长春130022

出　　处：《世界地质》2008年第1期19-22,共4页World Geology

摘　　要：鸡西柳毛石墨矿的原岩属正常沉积岩,沉积环境为稳定的浅海带蒸发盆地。稳定同位素δ13C的对比研究表明,石墨中的碳质来源于同源生物有机质,而围岩大理岩中的碳则是沉积碳酸盐的原始成份。矿石化学组分数理统计研究表明,铀、钒等金属元素与碳呈明显的正相关,反映了沉积环境具有蒸发盆地的特性,即泻湖体系。矿床具层控性质,为含金属元素钒、铀为主的矿石系列。中低品位复层石墨矿的沉积环境以潮坪为主,构成了矽线石与石墨组合,反映了氧化与还原条件交替出现的变化环境。The protolith of the Liumao graphite formation belongs to normal sedimentary rock, whose sedimentary environment is a stable evaporating basin in shallow-sea facies. The comparative study on stable isotope δ13C shows that the carbon in graphite derived from organic matter of homologue; meanwhile, the carbon from marble in wall rock came from primitive component of sedimentary carbonate. The mathematical statistics in ore chemical composition show that the metal elements such as uranium and vanadium are related to carbon in positive correlation obviously, indicating the sedimentary environment with the character of evaporation basin, i. e. lagoon system. The graphite deposit is characterized by strata-bound being a series of ore containing uraniumand vanadium predominatingly. The tidal flat predominated in the sedimentary environment to the compound layer graphite formation in mid-low grade, consisting of sillimanite-graphite combination, indicating the variable environment that oxidizing and reducing conditions alternated.

关 键 词：石墨矿 铀 钒 稳定同位素 柳毛 鸡西 

分 类 号：P619.252[天文地球—矿床学] P595[天文地球—地质学]