European stock markets rallied by more than 1.0 percent in opening deals on Friday, clawing back some of their recent dizzying losses, but sentiment remained plagued by global economic worries. London\'s FTSE 100 index of leading shares rose 1.05 percent to 5,093.92 points, Frankfurt\'s DAX 30 added 1.22 percent to 5,227.09 points and in Paris the CAC 40 won 1.43 percent to 2,821.43. Elsewhere, the Milan stock market gained 1.70 percent and Madrid climbed by 1.51 percent in value.