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In the DRC, a Chinese-Australian battle for control of a massive untapped lithium lode

In the 20th century, the mining industry brought fortunes into the sleepy villages of Manono, a town in the southeast of the Democratic Republic of the Congo.

Before independence in 1960, the Belgian settlers exploited cassiterite, the ore of tin, helping develop quarries, dams, roads, railways and foundries.

When the Belgians left, poor management, dilapidated equipment and the collapse of the world tin prices in the 1980s sent the town to its knees.

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Those troubles worsened in the civil war that followed Laurent-Desire Kabila's ousting of Mobutu Sese Seko as president in 1997.

But the discovery of a gigantic deposit of lithium - the metal used to make rechargeable batteries in phones and electric cars - by Australian company AVZ Minerals has raised hopes for the sleepy town.

Perth-headquartered AVZ said in 2018 it had discovered about 400 million tonnes of lithium ore, making the Manono site potentially the world's largest untapped lithium deposit.

However, the hopes could be short-lived, with a legal tangle over ownership pitting China's Zijin Mining against AVZ.

The dispute is a fight over a 15 per cent stake in the Manono project currently owned by Cominiere, the DRC's state-owned mining company.

In a deal signed in 2017, AVZ held a 60 per cent equity stake in Dathcom Mining, a joint venture that owns 100 per cent of Manono, while Cominiere had 25 per cent.

The Australian firm says it increased its stake from 60 per cent to 75 per cent after buying a 15 per cent stake from Cominiere but Cominiere says in its annual financial reports that the deal did not go through, a position upheld by a DRC court in December.

Instead, Cominiere sold its 15 per cent stake to Chinese firm Zijin Mining via a local subsidiary for US$33.4 million, according to documents seen by London-based short-seller Boatman Capital Research.

But AVZ said that any such transfer to a third party "would be a material breach of the pre-emptive rights".

"Essentially, AVZ believes it has pre-emptive rights to any sale of a stake and argues it would've bought that 15 per cent stake - arguing that the sale of the stake was 'spurious' in nature," said Greg Miller, an analyst at Benchmark Mineral Intelligence.

For its part, Zijin says it is the legitimate owner of the 15 per cent stake and will "protect its legitimate rights and interests".