Aluminum prices in London are up nearly 17% since the onset of the U.S.-Iran conflict, as a growing chorus of top commodity desks, including Mercuria, Goldman, JPMorgan, and others, warn that the market is facing a major supply shock. That disruption, driven firstly by Middle East smelter outages and the Hormuz maritime chokepoint, is now colliding with new concerns that China may be forced to curtail output amid energy-use and emissions inspections, according to Bloomberg. More color from the report: Chinese authorities are now moving to…