Rio Tinto buys Arcadium for $6.7 billion cash

UPDATED: Rio Tinto (ASX, LON, NYSE: RIO) will acquire Arcadium Lithium (ASX: LTM)(NYSE: ALTM), in an all-cash transaction, valuing the latter at $6.7 billion, the Anglo-Australian giant confirmed on Wednesday.   The second largest miner is paying the United States-based...