By Gus Trompiz and Dominique Vidalon PARIS (Reuters) -French minerals company Imerys unveiled plans on Monday to develop a lithium mine in central France that it said could be a leading contributor in Europe’s quest for electric-vehicle battery materials. Electric cars such as Renault’s Zoe are key to the European Union’s strategy to cut emissions and the bloc is trying to reduce reliance on battery supplies from Asia. Imerys aims produce 34,000 tonnes of lithium hydroxide annually for at least 25 years from 2028 at an existing mine at Beauvoir, north of Clermont-Ferrand. That would be one of …