Sesa Goa, owned by miner Vedanta Resources,HAS bought an additional 1.5% stake in Cairn India at an average price of Rs 325 a share through a stock market deal. Sesa Goa and a unit bought the shares from Cairn UK Holdings through a block deal on the Bombay Stock Exchange. After the deal, Sesa Goa holds 20% of Cairn India. Vedanta is buying a majority stake in Cairn India from British oil firm Cairn Energy in a $6 billion deal.