3 ms·
The iridium content of marble is going to be in ppt or more likely ppq abundances. I see no decay chain leading to Radon. https://en.wikipedia.org/wiki/Isotope
by wycx 9y ago
The iridium content of marble is going to be in ppt or more likely ppq abundances.
I see no decay chain leading to Radon. https://en.wikipedia.org/wiki/Isotopes_of_iridium https://en.wikipedia.org/wiki/Isotopes_of_iridium