Thiosulphate Leach Liquor with Sodium Hydrogen Sulphide. (The thiosulphate leach liquor was spiked : with commercial gold thiosulphate and copper thiosulphate reagents to increase their concentrations relative to the thiosalts, prior to addition of NaSH).
Help with black sand recovery/ Sodium Thiosulfate Gold. Jul 31, 2017 Would Sodium Thiosulfate leach be safer faster and eazier. Top. Blacktoadd Member Posts: 38 Joined: July 15th, 2008, 1:39 am Type in Gold from black sand and you will find lots of articles on getting it.