- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Predecessor to dilithium as used in early starship warp drive reactors. Because the rare crystalline form was required, lithium so used had to be refined through an energy-intensive "cracking" process.