NEW YORK (MarketWatch) -- Canadian stocks rose at Thursday's start, led by gains in the metals and mining sector. The S&P/TSX Composite Index added 31 points to 12,161. Shares of Lundin Mining Corp. /zigman2/quotes/201246870/delayed CA:LUN +2.83% gained 3.7%, while Goldcorp Inc. shares climbed 1.5%. Shares of TransCanada Corp. /zigman2/quotes/203758221/delayed CA:TRP +0.48% were relatively flat after the company submitted a reroute of its Keystone XL oil pipeline to the Nebraska government Wednesday evening, a step to get the project to move forward after it was rejected by the U.S. government earlier this year. Ivanhoe Mines Ltd. /zigman2/quotes/207656050/delayed CA:IVN 0.00% shares slipped 3.5% after Rio Tinto PLC said it will review Ivanhoe Mines' sale of a stake in SouthGobi Resources Ltd. /zigman2/quotes/202113662/delayed CA:SGQ +28.57% to Aluminum Corp. of China Ltd., or Chalco, now that it has control of Ivanhoe's board.