This article is about arsenic minerals acting like a sponge that holds and concentrates gold from the surrounding environment that it comes in contact with. It isn't creating new atoms of gold.
Gold can be created through an unrelated process of nuclear transmutation, but it's impractically expensive [0].
Gold can be created through an unrelated process of nuclear transmutation, but it's impractically expensive [0].
[0] https://en.wikipedia.org/wiki/Synthesis_of_precious_metals#G...