(Reuters) - London-listed Anglo American and Canada's Teck Resources will merge in a $53 billion deal, the companies said on Tuesday, the biggest mining tie-up in more than a decade. The new company, Anglo Teck, will be based in Canada with a primary listing in London, the firms said. S&P GLOBAL ANALYSTS "The merger is a game-changer for Anglo American. In our view, the combination of the two companies would result in a major copper producer, in line with Escondida and ahead of Antofagasta, with some di ...