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- W3010412465 abstract "The Makum Coal Field, largest of all the coalfields of North Eastern Regionis important from the point of view of the Tertiary coal resources of India. There are five regionally persistent coal seams and are confined to the basal 200m section of the Tikak Parbat Formation. Within this area Namdang, Boragolai, Ledo, Tirap, Tikak and Tipong collieries are situated. The coal seams are thick (max. 60ft) and are bright and non-banding in nature. It is observed that moisture content is highest in Tikak colliery (2.63%) and the average moisture and ash content of the coals in Tipong, Ledo, Boragolai, Tirap, Tikak and Namdang collieries are very low which indicate for a better utilization of the coals. The volatile matter content of the coals is very high in all the collieries which give an indication of absence of any igneous intrusion in the area. Namdang colliery contain high ash (7.28%), mineral matter (8.01%) but low in Carbon (68.80%). It is observed that the organic sulphur content is highest in Namdang (5.96%) and lowest in Boragolai (3.52%). Sulphur content of the Makum coal varies from 2.47 to 4.06% and acts as a catalyst in hydrogenation to produce syncrude and 80-90% of the coal can be liquefied and indicates that the coals were deposited under marine or transitional environment. The relatively low carbon/hydrogen but high oxygen/carbon ratios of the coals in all the collieries also make it suitable for hydrogenation to produce synthetic petroleum. The high contents of the elements like Barium, Copper, Nickel, Chromium etc also indicates marine influence in the depositional basin as these elements tends to be more abundant in marine water. The presence of Vanadium and Copper with Manganese and Cobalt indicates that they were deposited under reducing environment." @default.
- W3010412465 created "2020-03-13" @default.
- W3010412465 creator A5000989301 @default.
- W3010412465 date "2018-08-01" @default.
- W3010412465 modified "2023-09-23" @default.
- W3010412465 title "GEOCHEMICAL CHARACTERISTICSOFTERTIARY COALS OF COLLIERIES OF MAKUM COALFIELD: IMPLICATION TO DEPOSITIONAL ENVIRONMENT" @default.
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