* The Toronto Stock Exchange's S&P/TSX .GSPTSE fell 18.21 points, or 0.11 percent, to 16,484.21.
* Leading the index were OceanaGold Corp OGC.TO , up 10.4 percent, First Majestic Silver Corp FR.TO , up 8.7 percent, and Pan American Silver Corp PAAS.TO , higher by 6.7 percent.
* Lagging shares were Precision Drilling Corp PD.TO , down 4.9 percent, TFI International Inc TFII.TO , down 4.3 percent, and Nexgen Energy Ltd NXE.TO , lower by 4.0 percent.
* On the TSX 110 issues rose and 127 fell as a 0.9-to-1 ratio favored decliners. There were 20 new highs and 4 new lows, with total volume of 165.5 million shares.
* The most heavily traded shares by volume were Encana Corp ECA.TO , Enbridge Inc ENB.TO and Barrick Gold Corp ABX.TO .
* The TSX's energy group .SPTTEN fell 1.82 points, or 1.3 percent, while the financials sector .SPTTFS slipped 0.81 points, or 0.3 percent.
* West Texas Intermediate crude futures CLc1 fell 1.84 percent, or $1.06, to $56.56 a barrel. Brent crude LCOc1 fell 1.17 percent, or $0.75, to $63.6 O/R
* The TSX is up 15.1 percent for the year.