Crude oil prices top $85 per barrel

The Nikkei 225 index added 1.06 percent while the Shanghai composite index in China gained 0.97 percent Monday. Markets also rose in Britain, France, Germany and Sweden.

On the New York Mercantile Exchange, December delivery crude oil added 27 cents to $85.15 per barrel. Heating oil prices gained 1.44 cents to $2.3782 per gallon. Reformulated gasoline blendstock prices rose 2.03 cents to $2.2302 per gallon.

Henry Hub natural gas lost 4.3 cents to $3.756 per million British thermal units.

At the pump, the national average price of unleaded gasoline rose slightly to $2.892 per gallon from Sunday's $2.891, AAA said.

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