@Arangol
First you have to mold it, you take a chunk and in an instant it flies away. Remember only a couple of milligrams can lift an entire boulder. If you, against all odds, make it to the pulverizing it will be even harder as normal pulver has a habit of floating away just think of the consequences when you let ....? into pulverized form!
If you, by any chance, believe it or not, manage to drink it, it's sole mass, let's take 1mg for example. 1(!) milligram can lift a ton , now what happens if you attach a boat to an inflatable helium baloon, the boat uncontrollably floats upwards until it hits the surface, or in this case, the ceiling. now, imagine the excruciating pain of meeting this spiky-stalactitous cave ceiling in a raging speed.
Still wanna fly?