Base metals mostly higher on session

In the metals markets on Thursday gold added close to $4, to $613.70/$614.45 per troy ounce. The gains came even though the dollar strengthened during the day. Most base metals prices were also up, the exception being copper, which dropped $40 to $5,837 per tonne. Three-month nickel added $1,950 late in the session to $33,450 per tonne; it was as high as $34,900 at one point in the trading day. Zinc was $135 higher to $3,875 per tonne, while aluminium gained $35 to $2,745 per tonne.