The most-traded copper contract on the Shanghai Futures Exchange finished down 0.2 percent to 37,440 yuan a tonne on Friday as expectations of monetary stimulus and lower interest rates underpinned the market, although gains were capped by concerns over growth in top consumer China. Zinc prices climbed to a more than one-year high, rising for a fourth straight session on expectations of shortages.
"We had Brexit and there is market expectations of interest rates to remain low," said Alan Liew at United Overseas Bank in Singapore. "It is good for commodities, including copper and zinc." The possibility of monetary policy easing in Britain and China have helped sentiment. In news, an affiliate of Saudi Arabian Mining Co (Ma'aden), the Gulf's largest miner, has started commercial production at the Jabal Sayid copper mine, it said. Tin in Shanghai jumped by its daily limit of five percent to 118,000 yuan a tonne.