Xenomit has an important role in the Skylab. It is used to produce Promerium, which is used to produce Seprom. Promerium is created with 10 Prometid, 10 Duranium and 1 Xenomit. Because Xenomit is so rare to find, the Skylab has a Xenomodule which produces a substance, less rare than Xenomit, which can be used to replace Xenomit when making promerium. Take this to your advantage and save your Xenomit for more important things.