Abstract

This investigation makes a systematic study of the distribution of the forms of sulphur in the Tertiary coals of North-Eastern India, i.e. coals of Upper Assam and Arunachal Pradesh, to delineate the areas of low sulphur content and high sulphur content with a low proportion of organic sulphur. These coals have, in general, a high sulphur content. In a particular seam, total-, pyritic- and organic-sulphur contents increase from the floor to the roof of the seam. Upper seams are found to contain, in general, more sulphur than the seams lying below. Certain sections of a seam have low organic sulphur contents which can be mined separately. It is possible to delineate the low sulphur zones in a particular coalfield so assisting the scientific exploration and exploitation.

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