The rate of fines was also hiked by Rs 100 to Rs 2,660 per tonne.
On April 18, the state-run firm had fixed the rate of lump ore at Rs 2,900 per tonne and of fines at Rs 2,560 per tonne.
The new rates are with effect from May 23, 2018, NMDC said in a BSE filing.
The current prices exclude royalty, DMF (District Mineral Fund), NMET (National Mineral Exploration Trust), cess, forest permit fee and other taxes, it said.
The company is involved in the exploration of wide range of minerals including iron ore, copper, rock phosphate, limestone, dolomite, gypsum, bentonite, magnesite, diamond, tin, tungsten, graphite, beach sands etc.
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