Gold mineralisation is loed within quartz veining in the form of fracture filling and silifiion of the host rock. Sulphides are not abundant but are found within the veins and selvidges. Gold can be associated with the sulphides. The gold is finely distributed (grain size 5 micron to 20 micron).

18/04/2016 · Problem with gold recovery from sulphide ore: How may a mill get the maximum recovery of gold from a sulphide ore, at the least capital cost and at the same time obtain the highest net latter point is most important. In many cases a gold mill using an allcyanide flowsheet with fine grinding of all the ore will report very low gold content in the tailings particularly on an ...

Gold mineralisation at Simberi is associated with sulphides and iron oxides occurring within hydraulic fractures. In the oxidised zone, high grade gold occurs as rare vuggy and chalcedonic quartz. Gold mineralisation in the sulphide zone consists of refractory gold hosted by pyrite or marcasite containing scarcer arsenopyrite at depth.

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Sulphides can be oxidized by several methods, and the overall costs are similar. ... the gold mining industry has worked with cyanide for over 100 years ... gold (usually < 1 micron in diameter), in minerals that are inert and impervious to the cyanide leach liquor. Examples of

18/01/2017 · Table of ContentsDrying and RoastingPulverizing and FluxingMeltingBullion and SlagLosses Method of Refining of Gold Sulphides Since the introduction of the improved method of precipitating gold from chlorine solution by SO2 and H2S at the Golden Reward chlorinationworks, Deadwood, S. D., this modern method has been further adopted in the chlorinationworks. It has proved practically most ...

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