Don't forget about the antimony ! Au, Ag, Mg, are all byproducts of the antimony mining, that basically are "free gratis". What began as a gold mine, has turned into an antimony mining operation. Some ot the purest antimony found.

Being the Chinese are the largest producer of antimony and their resources are running out, and small family run operations being shut down due to environmental/polution problems, one would think they are looking for other sources of supply. JMHO