(REUTERS) -- Global miner Xstrata said on Tuesday it still saw value in its investment in Lonmin, despite a significant underperformance in the platinum producer's share price against the sector this year.

Xstrata owns almost 25 percent of Lonmin, after a 2008 cash bid was derailed by the financial crisis.

It is not earning a return commensurate with what the cash should earn, Xstrata Chief Executive Mick Davis told analysts.

We still believe Lonmin represents a significant amount of value, we just don't know at the moment how to capture that value. When we work that out we will let you know.