BHP Billiton: shares go ex-div, underperform peers
** BHP Billiton (NYSE: BBL - news) shares sink c.5 pct as it trades ex-dividend
** The world's biggest miner is determined to pay a final dividend of 62 cents/shr on Sept. 29
** Other miners slip after three-day rally, with Glencore (Amsterdam: GX8.AS - news) down 2.7 pct, Randgold down 0.2 pct, Anglo falls 0.3 pct
** Stoxx 600 Basic Resources Index falls 1 pct
** Miners have borne the brunt of slowing Chinese growth (RM (LSE: RM.L - news) : aastha.agnihotri.thomsonreuters.com@reuters.net)