The shares, accounting for a 1.7% stake in the world's largest palladium producer, were bought predominantly by British-based investors, with Russian investors also buying a third of the shares.
Brazil's government wants Congress to reconsider a decades-old proposal to allow mining in indigenous reserves, which occupy 13% of the country's territory.
Developing of one of the world's biggest untapped copper and gold deposits is currently stalled by a multi-billion dollar legal wrangle with foreign mining firms.
The train had to be deliberately derailed after it reached speeds of 162 km/hour (101 mph), destroying two locomotives, 245 ore cars and 2 km (1.2 miles) of track.
For years, such enterprises have survived on bank loans and local government backing, robbing more deserving companies of financial resources that could have otherwise contributed to local growth.
Indonesian state miner PT Aneka Tambang (Antam) targets to start operation of its ferronickel smelter in East Halmahera in the second half of this year.
