Tuesday's oil, gas, gold and zinc prices

North Slope oil: $93.96 per barrel, up $0.35

U.S. natural gas (Henry Hub): $2.70 per million BTU, unchanged

Gold (N.Y. Mercantile): $1,574.00 per ounce, down $13.50

Zinc: $0.8158 per pound, down 0.01 cents