In the Phazon Mines, their are a couple of the Phazon Elite's being preserved. They are very similar to the one and only Elite Pirate. To defeat the Phazon Elite's you have to stay away from it. Once it slams its fists on the ground, shoot it with your strongest weapon. (Two hits with the Super Missile should kill them). Only attack it right after it slams its fists on the ground.