摘要
根据黄陇侏罗纪煤田主采煤层煤质资料和研究成果,对煤中常量元素和微量元素的含量进行了统计分析,探讨了煤中各元素形成的地质因素,并对铀含量富集特征及有利成矿区进行了分析。研究显示,黄陇侏罗纪煤田形成于陆源物质供给较丰富的干旱弱还原泥炭沼泽环境中,煤中微量元素Ga、Ge、V、As等属正常含量水平,Cl、F、P属低含量水平,U含量明显高于全国值。由于盆地边缘造山运动提供了丰富的铀源、有机流体及输导体系,使得U含量由盆地边缘向中心逐渐减小,其中处于氧化还原环境的永陇矿区、旬耀矿区有利于铀矿的形成。
Based on Huanglong Jurassic coalfield main mineable coal seams coal quality data and studied results, carried out statistical analysis of content of major elements and trace elements in coal, discussed genetic geological factors of elements, especially analyzed uranium content enrichment features and favorable ore-forming areas. The study has shown that the Huanglong Jurassic coalfield was formed in terrigenous supply abundant arid weak reducing peat bog environment. Contents of trace elements Ga, Ge, V and As in coal are at normal level, Cl, F, P belong to low level, while the U content obviously higher than national level. Because of basin margin orogenic movement provided abundant U sources, organic fluid and passage system made U content gradually decreasing from basin margin toward basin center, thus, the Yonglong and Xunyao mining areas in redox environment were favorable to form U deposits.
出处
《中国煤炭地质》
2015年第7期15-18,共4页
Coal Geology of China
基金
中国地质调查"华北赋煤区煤系矿产资源综合调查"(12120114012001)项目
"特殊和稀缺煤炭资源调查"(1212011085511)项目
关键词
黄陇侏罗纪煤田
煤中元素
特征分析
铀矿
Huanglong Jurassic coalfield
elements in coal
characteristic analysis
U deposit
