RIO DE JANEIRO, June 25 (Reuters) - Brazil's Eike Batista is seeking to sell his stakes in iron ore, coal and gold mining companies as he tries to raise cash to pay debt and finance investment in his EBX Group industrial conglomerate, a source linked to EBX told Reuters on Tuesday. Batista is trying to sell all or part of his 27 percent stake in MMX Mineração e Metálicos SA MMXM3.SA , his 62 percent stake in CCX Carvão da Colombia SA CCXC3.SA and his AUX gold mining company, the source said. (Reporting by Sabrina Lorenzi; Writing by Jeb Blount; Editing by Gary Hill) ((Jeb.Blount@thomsonreuters.com)(+55-21-2223-7143)(Reuters Messaging: jeb.blount.thomsonreuters.com@reuters.net)) Keywords: BRAZIL BATISTA/MMX