Gold, silver slide on session

Precious metals prices were mixed on Monday.

Gold and silver both saw declines on the possibility that the US economy will slow, sending demand for precious metals lower.

December gold dropped 30 cents in New York to $666.50 per troy ounce after going as much as 0.6 percent higher and 0.7 percent lower during the session.

September silver was down 7 cents to $11.74 per troy ounce.

On the other hand, platinum and palladium both gained value as investors speculated that the US dollar will fall farther in relation to the euro.

October platinum added $15.80, a 1.3 percent gain, to $1,247.40 per troy ounce in the biggest one-day percentage gain since the end of May.

Meanwhile, September platinum gained $2.20 to $331.95 per troy ounce but remained 2 percent lower so far this year after a decline of 7.9 percent last week after an analyst opinion that plentiful supplies will make it difficult for prices to make up lost ground.