TORONTO, Feb.27 (Xinhua) -- Canada's main stock index was down Tuesday as weakness in the prices of gold, silver and oil weighed on shares of mining and energy companies.

The Toronto Stock Exchange's benchmark Standard & Poor's/TSX Composite Index fell 43.51 points, or 0.28 percent, to close the day at 15,671.15.

The Canadian dollar came to 0.78.30 U.S dollar.

The largest percentage gainer was ECN Capital, which rose 3.8 percent while the largest decliner was Detour Gold Corp, falling 5.3 percent.

Bombardier edged up 0.5 percent to 4.09 Canadian dollars.

Aurora Cannabis fell 2.7 percent to 9.89 Canadian dollars and Aphria Inc dropped 3.3 percent to 12.50 Canadian dollars.

The materials sector lose 1.4 percent. Barrick Gold lost 2.9 percent to 14.99 Canadian dollars.