Very volatile over 30 °C, liquefied platinum was used in NX-class starships in combination with cobalt to line antimatter relays. There were about 2.5 milliliters in each relay. The crew of the Enterprise NX-01 once used a half liter of platinum stripped from the relays to pay the foreman of a trellium mining planet of for the privilege of seeing Kessick. (ENT: "The Xindi")
- It is rather surprising that Trip Tucker's liquefied platinum could be volatile above 30 °C, considering platinum is liquid only between 1,768 and 3,825 °C. Perhaps liquefied platinum refers to a substance which has been modified in a manner unknown to our science, or to latinum.
While trapped in Earth's past, Spock required a "small" block of platinum ("five or six pounds...") to properly construct a duodynetic field core. A frustrated James Kirk assured him that this was something less than economically feasible. (TOS: "The City on the Edge of Forever")
Platinum is not found on the planet Angel I, a fact that allowed the USS Enterprise-D find the survivors of the freighter Odin, who were hiding on the planet in 2364. Their leader, Ramsey, kept his wings for its sentimental values on a necklace. The wings were made of platinum. (TNG: "Angel One")