Carbomite

Originally the name Captain James T. Kirk gave to a non-existent material in order to deter an alien from destroying the USS Enterprise and her crew.

In 2265, a year after "The Carbomite Maneuver", a new and extremely rare material was discovered. It was found that when an amount was combined with chlorine trifluoride, the resulting explosion was massive compared to the amount of material needed. Fortunately, not only is the metal rare, but when it is found it is usually only trace amounts. Carbomite seems to always be found with beryllium, the carbomite a 'ghost' mineral.

In 2390, Lieutenant Commander Alora DeVeau discovered large amount of carbomite on a dwarf planet named Fral while in search of the [Iconian Gateway].