Baosteel Resources Australia, a subsidiary of the Chinese parent's overseas development arm, and Australian rail freight operator Aurizon offered Aus USD 3.40 per share in cash for the company.
The conditional off-market proposal represents a premium of 38.8 percent to Aquila's close on Friday of Aus USD 2.45 Shares in the firm surged 37 per cent to Aus USD 3.36 on the news.
Baosteel Resources International chairman Zhihao Dai said as the bidders had been unable to meet the Aquila board, they had decided to take the offer directly to shareholders.
He said the deal was in line with Baosteel's strategy of building a leading global steel and resources business by developing Aquila's Pilbara iron ore project in Western Australia and a hard coking coal development in Eagle Downs in Queensland.
Also Read
Baosteel already has a near 20 per cent stake in Perth-based Aquila.
The takeover had the potential to develop a new world-class iron ore district in the western Pilbara, supported by an integrated multi-user rail and port solution, he added.