… he’s my unbibium.

Reports of a naturally occurring superheavy element

Non peer-reviewed reports, mind you, this is on arXiv

In the neighborhood of Z = 122, A = 292, abundance = 10^-12, relative to thorium, and a half-life in excess of 100 million years. Found when doing mass-spectrometry on Thorium. The half-life appears to be inferred from the relative abundance. If it’s real.