By Alex MacDonald

LONDON--Globally diversified miner Anglo American PLC (AAL.LN) Friday said its Chief Executive Cynthia Carroll has decided to step down with the board of directors' agreement but will remain in her post until a successor has been appointed.

Ms. Carroll, who has held the post for nearly seven years, has faced criticism from shareholders and analysts over the company's relative under-performance compared to her peers and investment in a Brazilian iron ore project where costs have escalated. She however stewarded the company towards record profits in 2011 and oversaw three major projects that have enabled the Anglo American to enter the current downturn in a strong position.

Ms. Carroll also improved safety performance at the company's platinum operations and orchestrated Anglo American's takeover of majority control of the world's largest rough diamond producer De Beers for $5.1 billion this year.

"It is a very difficult decision to leave, but next year I will be entering my seventh year as chief executive and I feel that the time will be right to hand over to a successor who can build further on the strong foundations we have created," Ms. Carroll said in a statement.

"I am extremely proud of everything we have achieved during my period as chief executive and I will always retain enormous admiration and affection for this great company and its outstanding people," she added.

Anglo American's Chairman, Sir John Parker, said: "Cynthia's leadership has had a transformational impact on Anglo American. She developed a clear strategy, based on a highly attractive range of core commodities, and created a strong and unified culture and a streamlined organization with a focus on operational performance.

Ms. Carroll is the latest female chief executive to step down from a FTSE-100 company. U.K.-listed publishing company Pearson PLC (PSO, PSON.LN) Chief Executive Marjorie Scardino announced earlier this month she will leave at the end of 2012 after 16 years on the job. Dutch logistics firm TNT Express NV (TNTE.AE) said last month that its Chief Executive Marie-Christine Lombard has resigned.

-Write to Alex MacDonald at alex.macdonald@dowjones.com

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