XTA

"Xstrata lost 168p to £39.69 on reports that Vale of Brazil was threatening to walk away from a bid. Glencore, Xstrata’s main shareholder, is thought to be holding out for about £50 a share without a metals marketing deal or £46 with one. Many analysts believe that Vale cannot afford to walk."

http://business.timesonline.co.uk/tol/business/markets/article3456348.ece