Democratic Republic of Congo’s State miner Gecamines said on Monday it would not approve the sale of cobalt miner Chemaf and its Congolese assets to Chinese miner Norin Mining. Gecamines leases these assets to Chemaf, which on Thursday said it had agreed a sale to a unit of Chinese State-backed China North Industries Corp (Norinco) to settle debts largely funded by Chemaf’s long-time partner, commodities trader Trafigura.