GOLD LONDON MARKET OPEN GOLD / US DOLLARPYTH:XAUUSDShavyfxhubthe london gold session open on aggressive buy force on 4670 M15 and M30 close ,this has given hope that the short term supply roof structure could be broken to challenge the 4670 zone where i see a potential sell into the newwyork demand floor at around 4545-4550 zone.be alert as the market may sweep the zone off ,so the lower layer become the next demand floor .