Corrodium

Corrodium is a strange, purple glowing, mutating type of alien "crystal" introduced in Under Wraps, in which the Mummy was searching for it in different places, including Dairyville.

Backstory
It is unknown how Corrodium came into being, although according to Grandpa Max it is not found on Earth (the samples used in the episode Under Wraps came there via meteorites 65 Million years ago). It is however commonly found on other planets in the galaxy. An example of a planet would be Anur Khufos of the Anur Belt. The crystal came to be mined as a vast yet unstable power source, mutating species exposed to it easily unless they use it to boost their strength.

Powers and Abilities
Corrodium is a mineral of great potential energy, similar to coal or uranium of earth at a larger scale, and for a time was mined throughout the galaxy as an efficient, large power supply. However, like uranium of Earth, the Corrodium has severe side effects and is very unstable so it's use was largely ceased except by the Ectonurites and those within their empire who were immune to the effects due to evolving naturally close to the mineral. Human and Earth-born species are particularly submittable to mutation from the crystal, with their bodies being warped beyond recognition and their mind being corrupted to hostility at anything that moves. Ben in alien form was immune to the effects of the radiation emitted because the Omnitrix repels negative influences on the body (although this is not explained until Alien Force) so in combination with the followers of Zs'Skayr powering themself with the corrodium, it appears as though all aliens were immune to the effects of Corrodium (impossible as Max knew it as unstable throughout the Universe not just simply to humans). It appears that only these particular aliens are unaffected by Corrodium.

Appearance
Corrodium is a crystalline-like substance and glows a purplish color.

Trivia

 * Corrodium can be a reference to the word "Corrode", meaning to corrupt and -ium (a suffix that is often a cliche used for crystals).
 * Corrodium mutates quite any living things except plants.
 * One can be protected from its mutating effects with a level 12 Hazmat Suit.