LONDON (Dow Jones)--Africa Opportunity Fund Ltd. (AOF.LN), a closed-end investment company incorporated in the Cayman Islands, said Thursday it has declared a quarterly dividend of $0.0018 per share, payable July 12. Shares closed Wednesday at 44.97 pence valuing the company at GBP28.56 million. -By Ian Walker, Dow Jones Newswires; 44-20-7842-9296; [email protected] (END) Dow Jones Newswires June 24, 2010 03:00 ET (07:00 GMT)