May 22 (Reuters) - Canada's main stock index fell on Wednesday, with energy and mining stocks leading declines, as investors fled riskier assets on worries over a prolonged U.S.-China trade war.
* At 9:49 a.m. ET (13:49 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 105.29 points, or 0.64%, at 16,321.18.
* Six of the index's 11 major sectors were in the red, led by a 1.3 percent drop in the energy sector .SPTTEN .
* U.S. crude CLc1 prices were down 1.1% a barrel, while Brent crude LCOc1 lost 0.6% after an increase in U.S. crude inventories and on demand concerns. O/R
* The materials sector .GSPTTMT , which includes precious and base metals miners and fertilizer companies, lost 1%.
* Gold prices XAU= edged off two week lows hit in the previous session. GOL/ MET/L
* Both, the financials sector .SPTTFS and the industrials sector .GSPTTIN slipped 0.7%.
* On the TSX, 55 issues were higher, while 172 issues declined for a 3.13-to-1 ratio, with 20.46 million shares traded.
* The largest percentage gainers on the TSX were Cronos Group Inc CRON.TO , which jumped 2.8%, and Boralex Inc BLX.TO , which rose 1.8%.
* First Quantum Minerals FM.TO fell 4.7%, the most on the TSX. The second biggest decliner was New Gold Inc NGD.TO , down 3.3%.
* The most heavily traded shares by volume were First Quantum Minerals, Avalon Advanced Materials Inc AVL.TO and Prometic Life Sciences Inc PLI.TO .
* The TSX posted one new 52-week high and 10 new lows.
* Across all Canadian issues there were seven new 52-week highs and 21 new lows, with total volume of 35.72 million shares.