The price of no asset can move up or down in a straight line, so why should mining stocks be any different? They have been declining relentlessly for almost 2 weeks, erasing more than 10% of their value. Sharp? Definitely. Unsustainable? Perhaps. When will the turnaround take place? It depends.
Since last summer, investing in the mining sector has been akin to riding a mini roller coaster. There have been two huge rallies, two sudden and sharp declines while more than a handful of individual stocks have rebounded more than 200% from their lows.