* TSX rises 57.79 points, or 0.48 percent, t0 12,005.08 * Six of 10 main index sectors advance * Gold miners climb about 2 percent on higher gold prices By John Tilak TORONTO, April 18 Canada's main stock index advanced in choppy trade on Thursday, recovering from a selloff to a five-month low the day before as a spike in commodity prices fueled gains in energy and gold-mining shares. Gold prices jumped as their recent sharp drop triggered a spate of buying of gold bars and coins, and Brent crude oil snapped a six-session losing streak as dealers said it looked oversold. The gains on the TSX index were kept in check by U.S. economic data. Growth in factory activity in the U.S. mid-Atlantic region fell unexpectedly in April, and the Conference Board said its Leading Economic Index dropped 0.1 percent. The Toronto index is still down about 3.4 percent since the start of the year. "The market remains very volatile," said Irwin Michael, portfolio manager at ABC Funds. "There's so much negativity baked in the market that people would view the glass as half empty rather than half full." "We're waiting for a catalyst to enable investors to come back in and put their little toe in the water and buy a few things that have perhaps been oversold," he added. The Toronto Stock Exchange's S&P/TSX composite index was up 57.79 points, or 0.48 percent, at 12,005.08. Six of the 10 main sectors of the index were higher. The materials sector, which includes mining stocks, added 1.6 percent, helped by a 2 percent jump in gold stocks. Bullion prices, which earlier this week recorded their biggest-ever fall, were up 1.3 percent. Goldcorp Inc added 2.5 percent to C$28.65, and Barrick Gold Corp gained 2.2 percent to C$18.56. Energy shares were up 0.9 percent, with oil prices rising. Financials, the index's most heavily weighted sector, gave back 0.2 percent.