Zinc dropped for a second day in London on speculation supplies from mines will expand faster than demand into next year.

Zinc for delivery in three months dropped by USD 15 or 0.8% to USD 1,765 per tonne on the London Metal Exchange.

Zinc inventories in LME monitored warehouses fell 1,425 tonnes or 0.9 percent, to 158,900 tonnes. They have jumped by 78% this year.