By Nichola Saminather
TORONTO, March 15 (Reuters) - Canada's main stock indexerased most early gains to close little changed on Thursday, asincreases in energy shares were offset by declines in metals.
* The Toronto Stock Exchange's S&P/TSX composite indexclosed up 17.01 points, or 0.11 points, at 15,670.62.Seven of the 10 major sector groups were in positive territory.
* Magna International Inc was the biggest gainer onthe index, up as much as 4.3 percent to C$72.79, a two-weekhigh, after the auto parts maker said on Wednesday it wouldinvest $200 million in U.S. ride-hailing company Lyft Inc andwork with it to manufacture self-driving cars.
* Energy companies including Spartan Energy Corp,Seven Generations Energy and Raging River Explorationwere among the 10 biggest gainers, rising 6.3 percent,4.6 percent and 2.9 percent respectively.
* U.S. crude futures advanced 0.4 percent to $61.21 abarrel.
* Element Fleet Management was the biggest decliner on theindex, sliding 24.4 percent to C$3.87, its lowest since December2011, after reporting fourth-quarter earnings that missedanalyst expectations and saying it expected to incur arestructuring charge of about C$40 million ($30.65 million) inthe first quarter.
* Miners Ivanhoe Mines, Klondex Mines andDetour Gold were among the biggest decliners, falling13.1 percent, 11.2 percent and 3.1 percent respectively.
* Gold futures dropped 0.7 percent to $1,316.30 anounce. Copper futures lost 0.95 percent to $6,922 atonne.
* The Democratic Republic of Congo is considering addingcopper to its list of strategic minerals in a move that wouldextract higher fees from mining companies, an adviser to theprime minister said on Thursday.
* The TSX had 135 advancing issues and 111 declining ones,while four were flat.($1 = 1.3052 Canadian dollars)(Reporting by Nichola Saminather; Editing by Jonathan Oatis andPeter Cooney)