In exchange for turning over the 25 percent plus one share stake in Norilsk to Rusal, Prokhorov's Onexim group will receive 11 percent of shares in Rusal plus an undetermined amount of cash, Rusal and Onexim said in joint statement.
No value for the deal was given.
The surprise move was the latest in the ongoing shuffle surrounding Norilsk Nickel, the world's largest nickel miner.
Rusal became the world's biggest aluminum producer this year after a three-way merger between Rusal, its Russian rival Sual and the aluminum assets of Swiss-based commodities trader Glencore.
The discovery of the submarine has unveiled a few "inconsistencies." For example, how can one explain the fact that the sub was found where it needed to be searched for from the start?
When on a state visit to Singapore, Russian President Vladimir Putin promised to revisit the discussion of the 1956 Declaration between the USSR and Japan regarding the issue of the peace treaty with Japan
The TurkStream, which runs along the bottom of the Black Sea from Russia's Anapa to Turkey, will consist of two lines, each with a capacity of 15.75 billion cubic meters of gas a year