Abbassidium

Abbassidium is the 32nd element on the periodic table (real element Germanium). Late in the 1800s, a professor in Læpædœ found a element while touring his students though a mine. Similar to silver, but reacting in new ways it should never have. He and his student quickly rushed back, to the astonishment and confusion of the class. It is said that the two took a cart and ran off with it, fast as a horse. Back at the University, the two discovered that the "new ore" was just a old one, used for silver. However, they scraped off the sliver and found out that there was a "residue", which did all the reaction. Isolating it actually showed that this "Fool's silver" residual stuff was actually a entirely new element.

As to why students were wandering through a mine? It was customary, it was to show where everything came from, and to study how it was extracted. He, and said student named it after their nation: Abbassidia.
The professor's name was Cælæhed Zæt'er and the student was Q'œt Lætœt-Hæsœ.