CANADA STOCKS-TSX retreats from hefty gain as energy shares weigh

(Adds details, updates to the close) Feb 13 (Reuters) - Canada's main stock index fell modestly on Tuesday, pausing after racking up a hefty gain in the previous session, as industrial and energy shares fell along with the price of oil. * The Toronto Stock Exchange's S&P/TSX composite index ended down 25.41 points, or 0.17 percent, at 15,216.47. * On Monday, the index posted its biggest one-day gain since July 2016, with all 10 sectors in positive territory as global stoc