1.5.2. Limestone

Limestone is associated with rocks either composed of calcium carbonate or a mixture of calcium carbonate and magnesium carbonate. It is used for large variety of purposes like cement industry, iron and steel industry, chemical industry etc. Of the total consumption,. 75 per cent is used in cement industry, 16 per cent in iron and steel industry, 4 per cent in chemical industry and the rest in paper, sugar, fertilizers, Ferro-manganese, glass and rubber industries. Limestone is produced in the states of Madhya Pradesh, Rajasthan, Andhra Pradesh, Gujarat, Chhattisgarh and Tamil Nadu. Madhya Pradesh is the largest producer of limestone in India where large deposits occur in the districts of Jabalpur, Satna, Betul, Rewa.