METALS-Copper prices extend rally on supply fears, weaker dollar

BEIJING, June 7 (Reuters) - Copper rose more than 2 percent in Shanghai on Thursday to a fresh 3-month top, while the metal came within striking distance of its 2018 high in London as concerns over supply disruption in Chile and a weaker dollar index lent support to prices. A weaker greenback makes dollar-denominated metals cheaper for holders of other currencies. FUNDAMENTALS * SHFE COPPER: The most-traded July copper contract on the Shanghai Futures Exchange gained as