Silver settled up 2.7 percent on Monday while gold rose nearly 1 percent.

Commodities traders are concerned about global oil supply disruptions because of anti-government clashes in Libya and other parts of the Middle East and North Africa.

They also are monitoring Japan’s ongoing struggles to recover from a March 11 earthquake and tsunami and the ensuing crisis at its stricken nuclear plants.

Both situations can affect demand for a broad range of commodities, from oil to corn.

Other metals and agriculture products are mixed while energy contracts are mostly higher.