take 1 gram of that and dissolve it into 10 grams of ethanol (warm, in a beaker) mix well, then suck that mix into a syringe and put it in the freezer for a few hours.
Looks like theres something funny in it. Also it should easily dissolve fully and completely.
edit 2: maybe its some sort of pine resin cut distillate. I would start with chilling it in alcohol and see what happens if something funny is in it it should crash out