The Zeitgeist is moving against Chilean copper miner Antofagasta, capitalised at ?17 billion on the London Stock Exchange. To be sure, this is a well-run mining company that runs on cash, not debt, with plenty in the development pipe line to retain momentum. But Antofagasta is facing a double whammy: a possible hike in taxes and royalties implemented by a new, left-leaning government, and a potential downward correction in the copper price.