Every sector was either flat of registering losses on Tuesday, as the ongoing Greek crisis dampened sentiment across equity markets.Europe is awaiting a final decision this week on the Greek debt restructuring. Private investors have a March 8th deadline to decide if they will accept a debt exchange in which they will be required to take a 53.5% haircut in an agreement that would save Athens about €106bn (£88bn). However, there are reports circulating the press today that suggest that the bond-swap may not receive as many acceptances as hoped for.This, along with yesterday's news that China had cut its economic growth forecast to 7.5% for 2012 - set to be the first year of sub-8% growth in eight years - saw investors shift away from the industrial mining sector, as metals prices took a tumble.First Quantum Minerals, Bellzone Mining ,Talvivaara Mining, Evraz and Ferrexpo were the worst performers in the industrial metals and mining sector by the close.Meanwhile, with oil prices falling to a two-week low on news that the European Union is going to recommence talks with Iran over its nuclear programme, oil producers and oil services stocks were out of favour.FTSE 250 oilfield services firm Wood Group was among the heaviest fallers in the sector despite seeing profit from continuing operations before tax and exceptionals increase by 62.7% in 2011. However, the group did say that while it foresees further growth in upstream, subsea and pipelines in 2012, in downstream, process and industrial, the performance is likely to be flat due to the ongoing weakness in the market in North America.BCTop performing sectors so far today-Bottom performing sectors so far todayIndustrial Metals & Mining 4,197.67 -4.81%Life Insurance 4,272.27 -3.55%Oil Equipment, Services & Distribution 24,991.54 -3.44%Construction & Materials 3,508.63 -3.40%Electronic & Electrical Equipment 3,294.30 -3.25%