Glencore, the world's largest commodities trader, is considering a flotation that could be one of the biggest listings ever seen in London, a source familiar with the situation said.

If it goes ahead, an initial public offering of Glencore could value the company at as much as $60 billion, according to Liberum Capital estimates.

While no final decision has been taken, an IPO (initial public offering) remains one of the options, the source told Reuters on Monday.

Glencore's senior management team, led by chief executive Ivan Glasenberg, is meeting sell-side analysts in London over a couple of days, the source added.

This is a presentation to analysts of the company and its operations. It is educational, the source said.

(Reporting by Alexander Smith; editing by Will Waterman)