Oct 6 (Reuters) - Lithium miner Arcadium on

Sunday confirmed that global mining giant Rio Tinto

has approached it regarding a potential acquisition.

"The approach is non-binding and there is no certainty that

any transaction will be agreed to or will proceed," Arcadium

said in the statement.

Earlier this week, Reuters exclusively reported that the

companies had been holding talks and a deal that would make Rio

the third-largest producer of the electric vehicle battery

metal.