** Hong Kong Shares of Zijin Mining Group 2899.HK fall 2.5% to HK$19.6, on track for the biggest one-day pct drop since May 27

** Stock on course to snap four straight sessions of gain; third biggest pct loser on Hong Kong's material index .HSCIM, which falls 1.3%

** Shanghai stock 601899.SS slips 1.7% on the second session of decline

** Ivanhoe Mines IVN.TO said it had resumed underground mining in part of its Kakula copper mine in the Democratic Republic of Congo that had been closed due to seismic activity, but lowered output guidance for the year to 370,000 tons to 420,000 tons from earlier 520,000 to 580,000 tonnes guidance

** The Kakula mine is part of the giant Kamoa-Kakula copper mining complex

** Co-owner Zijin Mining said in a separate statement that the reduced production at the Kamoa-Kakula Copper Mine "is expected to have a certain impact" on its net profit attributable to owners of the parent for the year ending in December 2025

** Hang Seng Index .HSI slips 0.1%

** YTD, Hong Kong stock up 38.9%, Shanghai shares up 26.7%

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))