Feb 23 (Reuters) - Futures for Canada's main stock index edged lower on Monday as uncertainty over U.S. tariffs weighed on sentiment, while gains in gold prices offered limited support against weakness in oil prices.

March futures on S&P/TSX composite index SXFcv1 slipped 0.17%, as of 5:38 a.m. ET.

Toronto's benchmark index .GSPTSE hit another record high on Friday, led by financials and metal mining shares, after the U.S. Supreme Court's ruling against President Donald Trump's tariffs.

The court struck down Trump's emergency tariffs on Friday, leading the president to quickly announce a new 10% rate on the rest of the world, only to then lift it to 15% on Saturday.

Wall Street futures also slid on Monday as confusion over the U.S. trade policy revived the "Sell America" trade. S&P 500 futures EScv1 were down 0.24%, while Nasdaq 100 futures NQcv1 fell 0.39%.

Oil prices also declined as traders feared global demand uncertainty due to the confusion over tariffs, with a third round of talks between the U.S. and Iran scheduled for Thursday also pressuring the prices.

Brent crude futures LCOC1 and U.S. West Texas Intermediate crude futures CLc1 were down 0.5% each.

Meanwhile, spot gold XAU= and silver XAG= gained 0.9% and 2.7%, respectively, as investors rushed towards safe-haven assets.

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