Basu, T.N. (1967) Petrographic Characteristics and their Bearing on the Origin and Correlation of Indian Coals. Journal of Mines, Metals & Fuels, 15 (6). pp. 177-186. ISSN 0022-2755

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Like the pattern in the quality of the seams occurring in the various Gondwana Coalfields of the country shown by the author earlier [1], scanning of the available petroghaphic data of Indian coals also indicates a pattern in the petrographic make-up as shown in the present paper. It has been shown that the inertinite content of the various stages of the Damuda Coals and the Tertiary coals of Upper Assam appears to be very distinctive so much so that the coals of Karharbari Stage are characterized by an inertinite content of 35 to 55%, those of Barakar Stage by 20% to 35%, those of Raniganj Stage by 12 to 20% and those of Tertiary coals of upper Assam by less than 10%. This make-up seems to substantiate the megascopic characteristics of the coals. This is revealing and will go a long way in understanding more accurately the physical and chemical properties and the technological behaviour of the coals. In addition, this pattern of petrographic make-up, which appears to hold good by and large, will be of particular significance in regard to the correlation of the coal-bearing stages. Eventually, it may perhaps be possible to extent the application even to the correlation of the seams. On the basis of the petrographic make-up of the coals, an attempt has also been made to throw light on the probable conditions of deposition and the subsequent transformation of vegetable matter to coal.

Item Type: Article
Subjects: Coal Characterisation
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 26 Jul 2012 10:04
Last Modified: 26 Jul 2012 10:04

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