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Tanjung Formation is an Eocene - Oligocene coal carrier formation. This formation is stratigraphically situated above the bedrock of Pratersier age. The location of this formation is in Binuang area, South Kalimantan approximately 20 km northwest of Banjarbaru city. The method of research by taking the Channel sampling from the bottom seam to the top. Laboratory analysis is done in the form of coal petrography analysis and adsorption test. Coal seam of Tanjung Formation is found with thickness 50 to 350 cm. Megascopy, this coal seam is black, bright (bright-bright banded), black scratch, concoidal shards, and lightweight. Based on facies interpretation with the Tissue Preservation Index (TPI) - Gelification Index (GI) method, seam B coal depositional environment in fen stage and seam C coal is in the depositional environment at the stage of wet forest swamp. Coal facies analysis based on the Ground Water Index (GWI) - Vegetation Index (VI) type of peat on coal seam B and C shows in the bog-ombrotrophic zone. Based on the analysis of gas adsorption shows from the lower coal seam to upper with the range 426 - 502 SCF / Ton. The upper coal seam B of the small gas adsorption while at the lower of coal seam C is large gas adsorption. This change in gas adsorption is caused because the upper coal seam B has a depositional environment (facies) at fen stadium conditions , While the coal seam at the bottom (seam C) of the depositional environment (facies) at the stage of wet forest swamp. The difference in depositional environment affects the absorption of coal methane gas.