LONDON, June 22 (Reuters) - Glencore Chief Executive Ivan Glasenberg said on Tuesday that a supply gap was growing in the metals necessary for the world to replace fossil fuels with renewable energy, but he stopped short of predicting a so-called super cycle.

Glasenberg said at the Qatar Economic Forum that copper supplies needed to increase by one million tonnes a year until 2050 to meet an expected demand of 60 million tonnes. (Reporting by Clara Denina and Julia Payne; Editing by Alexander Smith)