Originally posted by Garf:
Lanthanum.
Rare.
Critical for jump coils.
tied up with all sorts of imperial regulations as the navy wants cheap Lanthanum for themselves but doesn't want it being sold to anyone else's navy.
I'd like to inject some real world facts about lanthanum - it ain't rare. About as abundant in the earth's crust as lead.
Now, it is in the family of the called the "Rare Earths" (check your periodic table) - in fact it heads up the Lanthanide series, the first row of elements that doesn't fit Mendelev's two-dimensional chart for organizing the elements.
The reason for the designation of "Rare" had to do with the difficulty of seperating the individual elements of the Lanthanide series (they all occur together - all 15 of em - in 3 different types of ore). This difficulty was overcame in the 1940's when the US government was investigating seperation techniques for another family of hard-to-single-out elements - the Actinides - in the quest for Uranium.
The designation "rare earths" has nothing to do with abundance - though indeed the further you go down the line of 15 elements, they do indeed get scarce, Lanthanum is the most abundant of them.
Lecture is now over - hope this was somewhat informative.
IMTU - I maintain the canon of lanthanum being used in Jump drives, but to keep it exotic, its how the lanthanum grid was fabricated that makes it 'special' - essentially its a weave of milliones of individual lanthanum ultrafine filaments hundreds of atoms thinck (something that can't quite be manufactured yet, but should be available at TL10 and steadily get easier with higher TL). The coarseness of the weave dictates the limit to Jump number (amongst other things), so at TL15, the weave is actually composed of true mono-filaments - 1 atom thick. The more complex the weave, then the more power you can put through it, thus enabling higher Jump fields.
So, to get back on topic, something that is rare and valued:
-Refined goods
-especially high tech refined goods
Yes, raw materials are great, but the real value add comes from having the ability to shape them into 'something' else - its called "value add" - and when you have the spread of TL like the Traveller universe, the potential advatnage for increased value because of differential TL's is staggering.
I also like the aspect of Anagathics - something refined, highly processed, and requiring high TL.
Sorry for the long post - somone rated me and I felt so self-important that I just had to keep writing thinking everyone would want to read it