By Clara Denina and Barbara Lewis
LONDON (Reuters) - Rio Tinto
The assets include a 53 percent stake in a Dutch anode facility and 50 percent of the shares in a Swedish aluminium fluoride plant, which are ingredients in aluminium production, the sources added.
French investment bank Natixis
Rio Tinto declined to comment and Natixis was not immediately available to comment.
Norwegian aluminium company Norsk Hydro
Given Hydro's already major position in the aluminium industry, the European Commission may have had competition concerns, industry sources said.
Iceland generates all its electricity from hydropower and geothermal energy and Rio's aluminium plant could appeal to companies looking to make their output as green as possible.
Producing aluminium requires huge amounts of energy, meaning it is also more cost effective to use hydropower.
Rio Tinto Chief Executive Jean-Sebastien Jacques, who took charge in July 2016, is gradually selling all but the company's best-performing units.
Rio agreed in January to sell an aluminium smelter in Dunkirk in France to Sanjeev Gupta's Liberty House, which also bought the miner's smelter in Lochaber, Scotland.
The entire aluminium supply chain has been hit this year by U.S. sanctions on Russian producer Rusal <0486.HK>, an outage at Norsk Hydro's plant in Brazil and a strike at Alcoa's alumina refineries in Australia.
Benchmark aluminium prices
(Reporting by Clara Denina and Barbara Lewis; additional reporting by Pratima Desai. Editing by Elaine Hardcastle)