Eike Batista is planning an initial public offering (IPO) of its Colombian gold unit, AUX, Bloomberg reports. The Brazilian billionaire plans to list the unit in Bogota, London and Sao Paulo in 2012.

Batista will invest about $100 million in Ventana Gold and may consider buying more assets before selling shares in the company. He also plans to raise around $1.5 billion in an initial sale oft its Colombian coal unit, CCX.

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