Sector movers: Mining falls back despite upgrades

Mining stocks are lower in line with metals prices, though some stocks are bucking the trend following positive results from studies of their mines.FTSE 250 stock Hochschild Mining is higher after it reported an encouraging scoping study and an upgrade of reserves for the Inmaculada gold-silver project in southern Peru.Gold production has resumed at Central African Gold's Old Nic and Dalny mines in Zimbabwe.Allied Gold, the oil company focused on the Pacific Rim of Fire continued its strong run after increasing gold reserves at Simberi in Papua New by 155%.Sampling at Herencia Resources' Paguanta project in the north of Chile has found high grades of copper and silver, the miner said today, sending the shares soaring.These stocks are all higher, but sector giants such as Rio Tinto and Kazakhmys have fallen in line with commodities.Top performing sectors so far todayAlternative Energy 3,914.63 +2.89%Automobiles & Parts 3,654.40 +1.56%Health Care Equipment & Services 3,123.40 +1.38%Financial Services 5,195.24 +1.33%Chemicals 5,973.04 +1.24%Bottom performing sectors so far todayMining 21,587.42 -0.57%General Retailers 1,580.66 -0.51%Real Estate Investment Trusts 1,860.74 -0.47%Technology Hardware & Equipment 580.52 -0.37%Electricity 7,170.04 -0.35% Hochschild Rio Tinto Canal+