(Adds details on stocks, updates prices)
* TSX ends down 72.93 points, or 0.45 percent, at 16,298.88
* Eight of TSX's 10 main groups end lower
* Materials group down 1.2 percent, energy off 1.9 percent
TORONTO, Jan 16 (Reuters) - Canada's main stock index fell on Tuesday as lower commodity prices weighed on the shares of materials and energy companies.
* The Toronto Stock Exchange's S&P/TSX composite index closed down 72.93 points, or 0.45 percent, at 16,298.88.
* Losses for the index came as the recent rally on Wall Street paused.
* The materials group, which includes precious and base metals miners and fertilizer companies, fell 1.2 percent, while the energy group retreated 1.9 percent.
* The most influential weights included oil and gas producer Encana Corp , which fell 5 percent to C$16.72.
Barrick Gold Corp declined 3.1 percent to C$18.88 and diversified miner Teck Resources Ltd was down 4.1 percent at C$37.06.
* Gold slipped from a four-month high reached on Monday as the U.S. dollar clawed back some lost ground, while copper and nickel hit multi-week lows. Crude prices also pulled back after recent gains. * BlackBerry Ltd fell 1.7 percent to C$17.18 despite launching cyber-security software that identifies vulnerabilities in programs used in self-driving cars. * Eight of the index's 10 main groups ended lower.
* Yellow Pages Ltd advanced 0.7 percent to C$8.27 after the company, once well known for its thick-print directories, said it would fire about 500 employees to cut costs and turn around its digital advertising platform. * SSR Mining Inc jumped 12.3 percent to C$11.48 after the precious metal miner reported fourth-quarter earnings and provided guidance for 2018. * Constellation Software Inc climbed 6.9 percent to C$787.87 after its Harris Operating Group acquired Acceo Solutions for C$250 million. (Reporting by Fergal Smith and Alastair Sharp; Editing by Bernadette Baum and Peter Cooney)
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