The government will auction 22 mineral blocks in April and May, including 14 iron ore blocks in Karnataka. <br/><br/>Mines Ministry said in a statement yesterday, the upcoming auctions will also include 6 blocks of limestone in Andhra Pradesh and further 2 limestone blocks in Chhattisgarh. <br/><br/>It further said, for the second phase, 42 blocks have been identified by seven state governments for auction during the next fiscal.