Carbon

Carbon was an element. Some carbon-based lifeforms were capable of eating the various silicon based species of mynock. Carbonite was a substance made from gaseous carbon.

Appearances

 * Star Wars: Princess Leia, Part I 
 * Star Wars: Darth Vader 4: Vader, Part IV
 * The Empire Strikes Back: So You Want to Be a Jedi?
 * Aftermath