TORONTO, Feb. 20 (Xinhua)-- Canada's main stock index fell Tuesday as decreasing shares of gold mining companies offset gains for the energy sector.

The Toronto Stock Exchange's benchmark Standard & Poor's/TSX Composite Index edged down 13.2 points, or 0.09 percent, to close the day at 15,439.44. Three of the index's 10 main groups fell.

The Canadian dollar fell 0.49 cents to 0.7907 U.S. dollar.

Aphria surged 5.6 percent to 14.85 Canadian dollars, while Canopy Growth rose 11.5 percent to 29.55 Canadian dollars.

BlackBerry rose 14 cents to 15.30 Canadian dollars while Shopify soared 4.6 percent 180.50 Canadian dollars.

Suncor added 1.1 percent to 43.84 Canadian dollars and Epsilon Energy gained 2.2 percent to 2.38 Canadian dollars.

Eldorado Gold declined 2.1 percent to 1.37 Canadian dollars while Osisko Gold Royalties dipped 8.1 percent to 12.29 Canadian dollars.

Klondex Mines dropped 4.6 percent to 1.87 Canadian dollars while Osisko Mining fell 6.9 percent 2.83 Canadian dollars.

Metro lost 37 cents to 39.75 Canadian dollars, while Loblaw Companies shed 19 cents to 65.69 Canadian dollars.