P223-WE THE ORGANIC GEOCHEMICAL, PETROGRAPHICAL AND PALYNOLOGICAL COMPOSITION OF COAL FROM THE KOVIN DEPOSIT (SERBIA) Dragana Ž IVOTIĆ 1 , Herman WEHNER 2 , Christian OSTERTAG-HENNING 2 , Marko ERCEGOVAC 3 , Georg SCHEEDER 2 , Branimir JOVANČ IĆ EVIĆ 4,5 , Olga CVETKOVI Ć 4 , Ivan GRŽ ETI Ć 5 , Jelena MILIVOJEVIĆ 1 , Ksenija STOJANOVI Ć 6 and Aleksandra Š AJNOVI Ć 4 1. Faculty of Mining and Geology, University of Belgrade, Dju š ina 7, 11000 Belgrade, Serbia 2. Bundesanstalt für Geowissenschaften und Rohstoffe, Stilleweg 2, 30655 Hannover, Germany 3. Serbian Academy of Sciences and Arts, Knez Mihailova 35,11000 Belgrade, Serbia 4. Center of Chemistry, IChTM, Studentski trg 16, 11000 Belgrade, Serbia 5. Faculty of Chemistry, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia 6. University of Belgrade School of Medicine, Dr Suboti ć a 8, 11000 Belgrade, Serbia The organic geochemical, petrological and palynological study was performed on lignite coal samples from the Kovin mine, Kovin deposit, Serbia. The Kovin coal deposit is located around 50 km east from Belgrade and is divided in two fields: western – field "A", and eastern - field "B". It is a part of the "Banat-Morava" depression, which consists of clastic sediments of Sarmatian (Middle Miocene), Pannonian and Pontian (Upper Miocene) age. These sediments transgressively and disconformly overlie metamorphic complex of the Serbo-Macedonian mass. Coal-bearing Pontian sediments are made up of loosely bounded sand with three coal seams (upper, I-Ib; middle, II; lower III). Mean random huminite reflectance of coal from Kovin basin is 0.30±0.03. The nineteen coal and one carbonaceous clay core samples were collected from different parts of the I-Ib coal seam in the near-shore parts of the "A" field. For the organic geochemical analyses, the pulverized coal samples were Dionex ASE extracted using dichloromethane as a solvent. The asphaltenes were precipitated and the remainder was separated into three fractions using liquid chromatography over silica gel. The saturated hydrocarbons were then analyzed by GC-FID and GC-HRMS (MAT95S). Maceral analysis was performed on a LEITZ DMLP microscope, at normal and ultraviolet reflected light, using the oil immersion. Palynological analyses were performed on thin sections. The n-alkane fraction comprises saturated hydrocarbons in the C 15 -C 31 range, with an odd-over-even predominance. Distributions of the n-alkanes from the Kovin lignites revealed that long-chain (n-C 25-33 ) compounds dominate the alkanes – with varying degrees of average chain length. Acyclic isoprenoid hydrocarbons are minor constituents in the aliphatic fraction. The major biomarkers in all samples from Kovin deposit are diterpenoids. They were identified as fichtelite, norpimarane, isophyllocladane, sandaracopimarane, isopimarane, phyllocladane, abietane and dehydroabietane. 16α (H)-phyllocladane is the major compound