Oct 9 (Reuters) - Rio Tinto Ltd ( RTNTF ):

* RIO TINTO TO ACQUIRE ARCADIUM LITHIUM,LTM

* RIO TINTO AND ARCADIUM LITHIUM ANNOUNCED A DEFINITIVE

AGREEMENT

* WHICH RIO TINTO WILL ACQUIRE ARCADIUM IN AN ALL-CASH

TRANSACTION

FOR US$5.85 PER SHARE

* DEFINITIVE AGREEMENT UNDER WHICH RIO TINTO WILL ACQUIRE

ARCADIUM

IN AN ALL-CASH TRANSACTION FOR US$5.85 PER SHARE

* RIO TINTO WILL ACQUIRE ARCADIUM IN AN ALL-CASH TRANSACTION

FOR

US$5.85 PER SHARE

* TRANSACTION HAS BEEN UNANIMOUSLY APPROVED BY BOTH RIO

TINTO AND

ARCADIUM LITHIUM BOARDS OF DIRECTORS

* DEAL VALUES ARCADIUM'S DILUTED SHARE CAPITAL AT

APPROXIMATELY

$6.7 BILLION

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