User blog comment:Stoop Davy Dave/Multiversal Metallurgy/@comment-6369172-20200215010052

Zonium was a one-off, like almost everything and everyplace that appeared in Blackhawk.

I forget where I saw Trollium, but I'm pretty sure it had two Ls.

Sivanium and Staggium should both be one-offs, but both names got re-used, by later editors or writers, to describe different elements. So they're two-offs.

>>I often wonder if a number of the one-off elements, such as Shazamium/Sivanium; Staggium; Vaxxium or Illium-349, were actually an isotope of Nth Metal, and were just not recognized because the users only explored very specific effects.<<

An interesting but untestable hypothesis, which for now must be left to future generations of toon metallurgists. Meanwhile ahmina steal all these here element names to pad out my taxonomy above. So thanks.