Aluminium prices hit a more than 13-year high on Thursday, as output curbs in top consumer China and fears of disruption from major bauxite producer Guinea lifted sentiment.
Three-month aluminium on the London Metal Exchange (LME) advanced as much as 1.9 percent to $2,848 a tonne, its highest since August 2008.
The most-traded October aluminium contract on the Shanghai Futures Exchange jumped as much as 3.2 percent to 22,535 yuan ($3,488.07) a tonne, the highest level since March 2008, before closing at 22,475 yuan a tonne, still up 3 percent.
Output curbs in China, the top global aluminium producer, have weighed on stockpile availability while political turmoil in Guinea, China's largest supplier of bauxite, added to the nervousness.
"Political unrest in Guinea has significantly raised the risk of disruption. At the same time, power shortages and environmental measures are restricting output in China," ANZ analysts said in a note.
"Together, these issues are likely to support aluminium prices in the short term," they added, forecasting a global deficit of 750,000 tonnes this year.
