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Rio Tinto was up nearly seven per cent to 1,611.00p per share.
Sharecast.com reports that the company is in talks with Chinalco over a possible large cash injection that could be worth up $15 billion.
In a statement, the mining giant said: "Rio Tinto confirms that it has held discussions with Chinalco regarding Chinalco acquiring minority interests in various operating businesses of the Rio Tinto and also investing in convertible instruments."
Among the other FTSE 100 risers today (February 2nd) was Autonomy Corporation which gained 0.91 per cent, GlaxoSmithKline which added 0.82 per cent and British American Tobacco which went up 0.47 per cent.
Rio Tinto is a London-listed company with its headquarters in the UK.
It is also listed on the Australian Stock Exchange and has executive offices in Melbourne.
