TORONTO, March 29 (Reuters) - Canada's main stock index was slightly lower on Tuesday as weakness in the mining and industrial sectors offset a rise in energy stocks supported by higher oil prices.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 25 points, or 0.16 percent, at 15,573.57 in morning trade. Of the index's 10 main groups, eight were in negative territory.