P223-WE THE ORGANIC GEOCHEMICAL, PETROGRAPHICAL AND PALYNOLOGICAL COMPOSITION OF COAL FROM THE KOVIN DEPOSIT (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 analysi