A slight rebound in gold on Friday after its worst one-day slump in over a year gave precious metals miners a boost in London.Blue-chip mining stocks such as Fresnillo and Randgold were among the best performers, up 4.7% and 5%, respectively, while FTSE 250 peers Centamin and Acacia Mining also advanced.Gold futures for April delivery were up 1.25% at $1,270.30 an ounce on the COMEX after falling by 2.4% to $1,252.10 on Thursday. This was the steepest daily decline for the metal since late 2013.Safe-haven demand for bullion increased on Friday after data showed that the rate of US economic growth slowed more than expected in the fourth quarter of 2014. Top performing sectors so far todayOil Equipment, Services & Distribution 15,489.67 +2.86%Mining 13,753.61 +1.99%Industrial Engineering 8,777.36 +0.69%Forestry & Paper 12,882.54 +0.67%Electricity 9,534.77 +0.54%Bottom performing sectors so far todayFixed Line Telecommunications 4,732.97 -2.31%Beverages 15,022.56 -1.60%Food & Drug Retailers 3,132.99 -1.23%Food Producers & Processors 8,259.38 -1.17%Mobile Telecommunications 5,308.60 -0.95%