LONDON - Copper prices in London were on track on Friday for a 8.6% decline in the second quarter after two quarters of growth due to slow demand recovery in top metals consumer China and concerns over global economic growth.

Three-month copper on the London Metal Exchange rose 0.4% to $8,208 per metric ton in official open-outcry trading. The metal, used in power and construction, failed to hold on to the boost it got in early 2023 when China removed its COVID-curbs and is down 1.8% so far this year.

"China's economic recovery after Covid-19 has disappointed with hopes for a demand boost now fading," said ING analyst Ewa Manthey. "We remain cautious heading into the second half of the year with sluggish demand from China pointing to lower prices."

China factory activity declined for a third straight month in June and weakness in other sectors deepened, official surveys showed on Friday, adding pressure for authorities to do more to shore up growth.

"There is no end in sight in the near future to the gloomy sentiment surrounding China's economic recovery," Commerzbank said in a note.

The most-traded August copper contract on the Shanghai Futures Exchange fell 2.4% on a quarterly basis. Copper inventories in warehouses monitored by the exchange rose 13% to 68,313 metric tons, according to its weekly data.

Copper stocks in the LME-registered warehouses <0#MCUSTX-LOC-GRD> fell by 2,450 to 72,975 metric tons after outflows from New Orleans and Rotterdam, LME daily data showed.

On the supply front, production partially resumed after mid-June fire at Sweden's Ronnskar smelter, its owner said on Friday.

Among other LME metals, aluminium dipped 0.9% to $2,141 per metric ton in official activity and was also on track for the first quarterly drop since July-September.

Nickel fell by 2.0% to $20,225. The metal is the worst LME performer so far this year, down 32.5%.

Zinc rose by 1.4% to $2,373, tin added 2.5% to $26,750 and lead gained 0.6% to $2,064.

(Reporting by Polina Devitt in London; additional reporting by Mai Nguyen in Hanoi; editing by David Evans)