Fire assaying, in essence, is a miniature or small scale smelting process which recovers and reports the total gold content of the assay sample, including
In typical gold deposit (with gravity gold) the variations are so great and the values are so low, any attempt to divide a sample by taking
Panning for gold is a simple operation but, at the same time, it is difficult to describe. Although the subtle techniques of gold panning vary
Determine the solid content of a mixture a fix volume of slurry is poured into the sample container, this sample volume is fixed because the
The Gold Refining Process by Aqua Regia was introduced at the Pretoria Mint after the Miller process had been tried and abandoned owing to the
The Moebius Process of Purification of Gold by Electrolysis is now in successful operation and is said to be specially suitable for refining copper bullion containing
The guard pot, with the clay pot in it containing 2 or 3 ozs. of fused borax, is placed in the furnace, and is heated
The guard pot placed for safety under the white pot and afterwards used for remelting the refined gold, is a plumbago crucible 8 ¼ inches
The use of chlorine gas for the purification of molten gold was first proposed by L. Thompson, and the results of his investigations were published
This Gutzkow Process of parting by sulphuric acid was invented and patented by Mr. F. Gutzkow. It has been extensively worked in Germany and in San