London close: Footsie drops to 2012-low on euro uncertainty

- Global stock markets plunge on Greek uncertainty- Footsie sinks to 19-week low- Miners lead the sell-off in LondonAn early sell-off in New York sent UK stocks reeling on Tuesday afternoon, pushing the Footsie to its lowest closing level in 2012 so far. Political uncertainty in the Eurozone today prompted investors to shy away from risk, fuelling heavy falls in the mining and financial sectors.The last time that the FTSE 100 closed below 5,555 was on December 28th 2011 when it finished the session at 5,507. Antonis Samaras from Greece's biggest party, Conservative New Democracy, failed to form a new government after elections at the weekend, meaning that Alexis Tsipras from the left-wing Syriza party has now been given the task of crafting a coalition. He is expected to reject the tough austerity measures agreed as part of the country's €240bn bailout by the European Union and International Monetary Fund."Although it is believed the party will struggle to find the support to form a coalition government, if they do, it could result in a Greek default as early as next month when a further €11bn of cuts over the next two years are scheduled to be agreed in order to receive the next tranche of the bailout," said analyst Craig Erlam from Alpari.Meanwhile, France elected anti-austerity Francois Hollande as its new President on Sunday, the country's first Socialist President in nearly two decades. He is looking to renegotiate the 'Fiscal Compact' and is thought to have begun discussions with German leader Angela Merkel. UK, German and US government bonds all rose today as investors looked to safer assets, pushing their 10-year bond yields down to near record lows.FTSE 100: Resources stocks tank, but Tullow bucks the trend after oil findMining and oil stocks bore the brunt of the sell-off today as investors took profits in 'riskier assets' as oil and metals prices took a tumble. The Standard & Poor's GSCI Spot Index, which tracks 24 raw materials, slipped today meaning that the index in now in the red (-0.3%) in the year-to-date. Polymetal lead the fallers on the blue-chip index, dropping nearly 9%. Fresnillo, Randgold, Vedanta, Petrofac and Glencore also were firmly out of favour. Financial stocks such as Man Group, Lloyds and Schroders were also suffering.Leading the upside though was Tullow Oil after it discovered further oil in the first exploration well at one of its Kenyan projects, increasing its potential 'significantly'. Following an announcement in March that the well had encountered in excess of 20m of net oil pay, the well was then deepened from 1,041m to 1,515m and a total pay count greater than 100m has now been discovered. Insurance group Aviva was among the handful of stocks to keep its head above water after it announced that its CEO Andrew Moss has quit with immediate effect after the majority of its shareholders last week voted against the remuneration report. Global banking giant HSBC slipped, erasing earlier gains after its first-quarter results. Reported pre-tax profit for the quarter was down $0.6bn compared with the first quarter of 2011 to $4.3bn as it was hit by a revaluation of its debt. However, underlying profits were up, driven by Retail Banking and Wealth Management, where profits came in at $2.2bn, significantly higher than in the previous year. FTSE 250: Invensys up on M&A speculationEngineering and software group Invensys was a strong performer today on the back of takeover tumours yet again. According to market chatter, China's CSR, Germany's Siemens and Switzerland's ABB are among the names thought to be potential bidders.Industrial materials maker Morgan Crucible was falling despite sticking to its full-year expectations. The firm said revenue in the first four months of 2012 at reported rates was marginally below the comparable period last year. The firm later announced that its Chairman Tim Stevenson will retire at the end of July. FTSE 100 - RisersTullow Oil (TLW) 1,517.00p +3.27%Land Securities Group (LAND) 742.00p +1.78%Tesco (TSCO) 323.45p +1.33%Hammerson (HMSO) 415.90p +1.19%British Land Co (BLND) 497.30p +0.89%Pearson (PSON) 1,160.00p +0.78%Centrica (CNA) 309.10p +0.78%RSA Insurance Group (RSA) 104.70p +0.58%United Utilities Group (UU.) 631.00p +0.56%Serco Group (SRP) 553.00p +0.45%FTSE 100 - FallersPolymetal International (POLY) 806.50p -8.66%Fresnillo (FRES) 1,394.00p -7.44%Man Group (EMG) 82.45p -7.10%Randgold Resources Ltd. (RRS) 4,773.00p -6.78%Vedanta Resources (VED) 1,059.00p -5.61%ARM Holdings (ARM) 480.50p -5.23%Petrofac Ltd. (PFC) 1,615.00p -5.00%Lloyds Banking Group (LLOY) 31.07p -4.74%Schroders (SDR) 1,324.00p -4.54%International Consolidated Airlines Group SA (CDI) (IAG) 168.60p -4.48%FTSE 250 - RisersInvensys (ISYS) 213.20p +5.18%Daejan Holdings (DJAN) 3,198.00p +4.85%Cable & Wireless Worldwide (CW.) 33.53p +2.35%Talvivaara Mining Company (TALV) 159.80p +1.78%Exillon Energy (EXI) 125.00p +1.63%SEGRO (SGRO) 219.00p +1.62%African Barrick Gold (ABG) 354.90p +1.14%Shaftesbury (SHB) 518.00p +0.88%Balfour Beatty (BBY) 270.80p +0.82%Homeserve (HSV) 249.00p +0.81%FTSE 250 - FallersNew World Resources A Shares (NWR) 338.40p -12.04%Imagination Technologies Group (IMG) 544.00p -10.97%Petra Diamonds Ltd.(DI) (PDL) 126.10p -10.57%Home Retail Group (HOME) 73.00p -10.15%Morgan Crucible Co (MGCR) 281.00p -9.65%Kenmare Resources (KMR) 42.65p -9.45%Renishaw (RSW) 1,314.00p -7.72%Essar Energy (ESSR) 124.00p -7.53%Centamin (DI) (CEY) 61.00p -7.44%Aquarius Platinum Ltd. (AQP) 113.00p -7.30%BC