TLDR Gold is quite literally a shitcoin.
Cupriavidus metallidurans consumes toxic copper and gold compounds, producing gold nuggets as a byproduct; it also resists cadmium but that’s not directly involved in gold formation. Peer-reviewed paper: Synergistic toxicity of copper and gold compounds in Cupriavidus metallidurans, Appl Environ Microbiol (2017).

