Feb 21 (Reuters) - Canada's main stock index opened lower on Thursday, as material shares were down on the back of a fall in gold prices, and lower oil prices weighed on energy stocks.
* At 9:32 a.m. ET (14:32 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 33.05 points, or 0.21 percent, at 15,998.19.