LONDON (Reuters) - Ecuador's constitutional court has rejected a petition for local consultation on a mining ban in a province in southern Ecuador, following a ruling covering a northern province and allowing copper miner SolGold to press ahead with exploration.In June, the constitutional court ruled against a request to require community consultations for a planned copper and gold mine at Cascabel, potentially one of Ecuador's biggest mining projects to date.In a statement on Thursday, SolGold..