By , * Zijin says refusal to renew mining lease could hurt ties* PNG refused to extend mining lease for 20 years on Friday* Zijin, Canada’s Barrick jointly own PNG’s Porgera gold mine* Porgera mining operations suspended over the weekendSINGAPORE/BEIJING, April 29 (Reuters) - China’s Zijin Mining has warned Papua New Guinea that its failure to renew the lease of a gold mine it jointly owns with Barrick Gold Corp there could damage bilateral relations.Papua New Guinea on Friday said it would not renew a 20-year mining lease at its Porgera gold mine, citing environmental damage and social...…By , * Zijin says refusal to renew mining lease could hurt ties* PNG refused to extend mining lease for 20 years on Friday* Zijin, Canada’s Barrick jointly own PNG’s Porgera gold mine* Porgera mining operations suspended over the weekendSINGAPORE/BEIJING, April 29 (Reuters) - China’s Zijin Mining has warned Papua New Guinea that its failure to renew the lease of a gold mine it jointly owns with Barrick Gold Corp there could damage bilateral relations.Papua New Guinea on Friday said it would not renew a 20-year mining lease at its Porgera gold mine, citing environmental damage and social...WW…