LONDON (AFP) - Oil prices jumped to a six-month high above 60 dollars Tuesday on growing signs of economic recovery amid concerns about unrest in African crude producer Nigeria, traders said. New Yorks main futures contract, light sweet crude for delivery in June, rallied to $60.48 a level last seen on November 10. The contract later stood at $59.90, up 87 cents from Mondays close. Brent North Sea crude for July delivery touched a six-month high of 59.65 dollars a barrel before pulling back to 59.05 dollars, up 58 cents from Monday. Gains in the stock market increased optimism that the global economy is recovering, said BetOnMarkets analyst David Evans. Global equity markets posted fresh gains Tuesday on hopes that the global economy is through the worst of its slump, setting the stage for a pick-up in energy demand, dealers said. In early afternoon stock market trading in Europe, Frankfurt rallied 2.03pc, Paris gained 0.82pc and London climbed 0.61pc. In Asia, Hong Kong added 3.06 percent, Tokyo put on 2.78 percent, Seoul advanced 2.99pc, Sydney added 2.19pc and Taipei gained 1.18pc. Oil jumped by around two and a half dollars on Monday as traders tracked prospects of a global economic recovery, rising shares on Wall Street and developments in Nigera. New York share prices shot higher Monday after better-than-expected earnings from home improvement retailer Lowes helped reinforce hopes for a recovery in the United States. A strong US economy is a key growth engine for the world because it is a major export market for many countries and is the biggest energy consuming nation on the planet. Prices were also boosted by rising violence in oil exporter Nigeria, where the countrys main armed group said it had ordered a blockade of key shipping channels in a bid to inflict further damage on the energy industry. Nigerias military has urged oil firms to ignore the threat. Fresh violence in Nigeria helped to support prices, said VTB Capital analyst Andrey Kryuchenkov. Militants there claimed to have sabotaged two pipelines, while threatening more supply disruptions. Unrest in the oil-producing Niger Delta region has reduced Nigerias daily output to 1.76 million barrels compared with 2.6 million barrels in January 2006.