Abstract

• The research area is mainly composed of clastic sedimentary rocks and coal seams of Upper Eocene Pondaung and Yaw Formation. The total (6) representative coal samples collected from differences coal seams in the Nyaungpin stream section, near Minthami village, Tamu Township. Six coal samples were used to determine the quality or grade of coals. The coals of the study area constitutes macerals of Vitrinite group (76% to 91%), Liptinite group (0.4 % to 2.8%) and Inertinite group (8% to 17%) respectively. The vitrinite reflectance analysis was carried out on a MPV- Leitz microscope by means of reflected white light using oil immersion objective. The proximate analysis was carried out on the coal analysis instruments, Ollital, Model - JZLR – 9000B. The results of vitrinite reflectance value of coal seam are range from 0.56 and 0.64. The proximate results of coal seams are composed of moisture- 1 % - 9 %, volatile matter – 42% - 45%, Ash – 3% - 11%, fixed carbon – 42% - 51% , calorific value – 10989 - 13261 Btu/lb. Both the vitrinite reflectance values and proximate analysis values were indicate that the coal rank of coal seams fall into “Sub bituminous A and B” rank. The classification based on the German and American Society for Testing Materials (ASTM) coal classification scheme. Subbituminous coals of the study area are economically important because those are used as fuel for electric power generation and industries. Coal samples were analyzed in laboratories at Yamaguchi Univeristy, Japan, Pengujan tek MIRA, Bandung, Indonesia and Georesources Mineral Analyis Laboratory, Yangon, Myanmar.