Some of the country's largest mining companies are copper producers, which means any foreign investment involving those miners would face intense scrutiny.
Investors are moving into gold equities from bullion, and the gold price may increase while central banks increase purchases as the US election approaches, BMO analysts said.
International Resources Holding had wanted a majority stake in Konkola Copper Mines to consolidate its position in Zambia after buying a 51% stake in Mopani.