I have stumbled upon a very strange gold ore... the xrf machine displayed 16.6% gold in ore sample after 1.simple wash, followed by 2. direct fire in furnace floor, 3. dilute cold hcl digestion for less than 2 hours.
the strange thing is that huge percentage of gold is unrecoverable and solutions bearing this ore usually shows no trace of gold using stannous chloride and even when stannous chloride test positive no recovery using smb can be made....but when the bearing solution is hcl/chlorine in the form of trichloro-s-triazinetrione is at ph 7.0 adding a 99% sulfuric acid to the pale green solution which tests negative for gold using SC disperse huge amount of heat and a very white powder in solution and the solution turns orange and tests positive for gold using SC.. and the white powder under xrf shows a 35% gold... non of which I could recover into metallic gold... have anyone encountered such a predicament...
the strange thing is that huge percentage of gold is unrecoverable and solutions bearing this ore usually shows no trace of gold using stannous chloride and even when stannous chloride test positive no recovery using smb can be made....but when the bearing solution is hcl/chlorine in the form of trichloro-s-triazinetrione is at ph 7.0 adding a 99% sulfuric acid to the pale green solution which tests negative for gold using SC disperse huge amount of heat and a very white powder in solution and the solution turns orange and tests positive for gold using SC.. and the white powder under xrf shows a 35% gold... non of which I could recover into metallic gold... have anyone encountered such a predicament...