TSX posts gain, Jan. 31-Feb. 7: Aura Minerals; Caledonia Mining; Cameco; Semafo; Kirkland Lake Gold

The S&P/TSX Composite Index rose 1.95% to 17,655.50. The S&P/TSX Global Mining Index fell 0.67%% to 78.49 and the S&P/TSX Global Base Metals Index rose…