Kinross Gold Corp has agreed to sell its stake in the Crixas gold mine in Brazil for $220-million (U.S.) as the miner focuses on key assets, including a massive gold deposit in Mauritania that has come under fire after a major writedown. Toronto-based Kinross, the country’s third-largest gold miner said it would sell its 50-per-cent stake in the mine to subsidiaries of AngloGold Ashanti Ltd. (AU-N36.18—-%), which already owns the other half of the mine.