@Zephir_AWT that is very interesting. Certainly during the transmutation similar compounds such as ammonium can be easily produced.
Note, that the sample was handled in high purity Argon while the process of sample preparation does not involve washing out at all. Actually this is unwanted and unnecessary for SEM.
Certainly ammonium does not include 1/3 of the elements from periodic table. But the pattern is very similar.
Similar patterns are forming again, elsewhere even that old disappeared.