e/Dianium

Information
has gloss	eng: Dianium was the proposed name for a new element found by the mineralogist and poet Wolfgang Franz von Kobell in 1860. The name derived from the Greek goddess Diana. During the analysis of the mineral tantalite and niobite he concluded that it does contain an element similar to niobium and tantalum.
lexicalization	eng: Dianium
instance of	c/Misidentified chemical elements