(Reuters) - Futures pointed to a lower opening for Canada's main stock index on Tuesday as most commodities, including gold and crude oil, continued to struggle with the strength of the U.S. dollar. March futures on the S&P TSX index were down 0.67 percent at 7:15 a.m. ET. No major Canadian economic events are scheduled for the day. Canada's main stock index hit its lowest level in five weeks on Monday, as energy shares fell with weaker Brent oil prices and smartphone maker BlackBerry Ltd dropped after a downgrade by Goldman Sachs. Dow Jones Industrial Average e-mini futures were down 0. ...



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