European stocks drop at open; London down 0.13%

Europe's main stock markets fell at the start of trading on Tuesday, with London's benchmark FTSE 100 index down 0.13 percent to 6,495.20 points.

Frankfurt's DAX 30 lost 0.17 percent to 7,970.83 points and in Paris the CAC 40 shed 0.34 percent to 3,823.04.