Coal Reserves In India
The Coal resources of India are available in older Gondwana Formations of peninsular India and younger Tertiary formations of north-eastern region.
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About 80 per cent of the coal deposits in India is of bituminous type and is of non coking grade.
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Jharkhand has the largest reserves of coal in India followed by Odisha and Chhattisgarh.
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The most important Gondwana coal fields of India are located in Damodar Valley. They lie in Jharkhand-Bengal coal belt and the important coal fields in this region are Raniganj, Jharia, Bokaro, Giridih, and Karanpura. Jharia is the largest coal field followed by Raniganj.
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The other river valleys associated with coal are Godavari, Mahanadi and Sone.
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Tertiary coals occur in Assam, Arunachal Pradesh, Meghalaya and Nagaland. It is extracted from Darangiri, Cherrapunji, Mewlong and Langrin (Meghalaya); Makum, Jaipur and Nazira in upper Assam, Namchik – Namphuk (Arunachal Pradesh) and Kalakot (Jammu and Kashmir).
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The lignite reserves stand at a level around 36 billion tons, of which 90 % occur in the southern State of Tamil Nadu.