Mexus Gold US (MXSG)

[8thaero]

Nothing new except a process for autoclaving which is costly. Was extraction solution Paul was planning to use in the Magnum mining on the Yaqqi river preMexus as Green environmental. Always been bunch of ways to dissolve silver and gold but thus far cyanide has been best as cost effective. Cyanide is the boogie man but pretty swift to neutralize in sunlight and best is pour some bleach on a spill. Danger is in a closed area. Ages old pro and con. 8

"Gold extraction[edit]

Sodium thiosulfate is a component of an alternative lixiviant to cyanide for extraction of gold.[6] However, it forms a strong soluble complex with gold(I) ions, [Au(S2O3)2]3-. The advantage of this approach is that thiosulfate is essentially not toxic and that ore types that are refractory to gold cyanidation (e.g. carbonaceous or Carlin-type ores) can be leached by thiosulfate. Some problems with this alternative process include the high consumption of thiosulfate, and the lack of a suitable recovery technique, since [Au(S2O3)2]3- does not adsorb to activated carbon, which is the standard technique used in gold cyanidation to separate the gold complex from the ore slurry."