If you want to get gold from rocks ,clean you rocks with nitric acid . Part 1
18:59
Gold From Black Sand Using Mercury And Nitric Acid
22:23
Platinum From Meteorite
36:06
Pure GOLD Precipitation With Zinc
24:55
Dissolve Gold With Hydrogen Peroxide SO2 Gas Precipitation
21:50
Gold Recovery & Refining with Hydrogen Peroxide, Easier Gold Smelting
15:16
Acetylene Gas from Sea Shells and Driftwood
23:20
Dissolving Gold In Hot Aqua Regia
20:53