They carry loads from Arcadia, Africa’s biggest lithium mine, opened this year by Zhejiang Huayou Cobalt, a Chinese firm. Overall, more than 90% of Africa’s supply this decade will come from entities at least partly owned by Chinese firms, estimates Benchmark Mineral Intelligence, a consultancy. Australia, an American ally, has this year blocked two Chinese investment proposals from firms involved in mining lithium and rare-earth minerals. More Chinese firms could process and refine metal in Africa over the next few years, notes Ms Zou. The case of Zimbabwe and lithium is also a reminder that Chinese mining comes in various forms.