July 30 (Reuters) - Guyana Goldfields Inc GUY.TO :
* GUYANA GOLDFIELDS INC. ANNOUNCES APPOINTMENT OF RENÉ MARION AS NON-EXECUTIVE CHAIRMAN
* GUYANA GOLDFIELDS INC - SHERIDAN WILL CONTINUE TO BE A MEMBER OF BOARD
* GUYANA GOLDFIELDS INC - PATRICK SHERIDAN JR. HAS BEEN TERMINATED BY BOARD IN HIS CAPACITY AS EXECUTIVE CHAIRMAN, EFFECTIVE IMMEDIATELY