In the last week, GDX erased the bullishness of the preceding month with one fell swoop of an Bearish Engulfing kind (weekly chart). So expecting continued bearish candles would be expected as it follows through.
The daily chart supports that view so far, and it just broke down of the 55EMA, after a gap down. The good thing is that it did not really gap and run... at least not yet.
Technicals are overall bearish, at least for a bit. Expecting bounces off 36, maybe even 35.