Plastic Explosive

 is one of the items that could be bought at the Emendation Station 3500, at $5000 each. Press C to use. When used it blows up a 5x5 area around the pod. This destroys stones, lava, and gas pockets without harm to yourself, but will also destroy minerals and artifacts.

Trivia

 * The C hotkey may be a reference to the well-known C-4 explosive, which is a type of plastic explosives in real life.