12:10 pm EST: Here is a quick look at the GDX 4-hr chart. There is a 2nd triangle break-down with a target at 17.90. So far GDX has hit 18.68. Note the 1st triangle break down came up about 0.86 short of the target, which would be 18.76 here on the 2nd triangle.
GDX 4-hr chart: