Geochemistry,petrology,and palynology of the Princess No.3 coal,Greenup County,Kentucky  

作　　者：Madison M.Hood Cortland F.Eble James C.Hower Shifeng Dai 

机构地区：[1]Center for Applied Energy Research,University of Kentucky,2540 Research Park Drive,Lexington,KY 40511,USA [2]Department of Earth and Environmental Sciences,University of Kentucky,Lexington,KY 40506,USA [3]Kentucky Geological Survey,Lexington,KY 40506,USA [4]State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Beijing,China [5]School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China [6]Present Address:Department of Geosciences,Baylor University,Waco,TX 76798,USA

出　　处：《International Journal of Coal Science & Technology》2020年第4期633-651,共19页国际煤炭科学技术学报（英文）

摘　　要：The high volatile C bituminous-rank,Bolsovian-age Princess No.3 coal,a correlative of the heavily-mined Hazard No.7 coal and the Peach Orchard and Coalburg Lower Split coals,was investigated three sites at a mine in Greenup County,Kentucky.The coal exhibits a“dulling upwards”trend,with decreasing vitrinite and a greater tendency towards dull clarain and bone lithotypes towards the top of the coal.The relatively vitrinite-rich basal lithotype is marked by a dominance of lycopod tree spores.The palynology transitions upwards to a middle parting co-dominated by tree fern and small lycopod spores and an upper bench dominated by tree ferns with contributions from small ferns,cordaites,and calamites.The lithotypes generally have a moderate-to high-S content with a variable ash yield.Sulfur,Fe2O3,and certain siderophile elements are highest near the top of the coal.As observed in other coals,uranium and Ge are enriched at the top and bottom margins of the coal.The rare earth chemistry at the top of the coal has a significantly lighter distribution(higher LREE/HREE)than at the base of the coal.

关 键 词：MACERAL Rare earth elements LANTHANIDES Coal lithology 

分 类 号：P61[天文地球—矿床学]