The process mineralogy of gold: The classification of ore .
Jul 01, 2004 · In addition, submicroscopic (solid solution) gold, principally in arsenopyrite and pyrite, is also important. The main causes of refractory gold ores are submicroscopic gold, the Au-Ag tellurides, and very fine-grained gold (
"Ore " has been defined . Fine gold is usually sold to a refiner, who then melts it down and refines it into pure bullion form, to eventually be sold on the world gold market. INDICATION OF GOLD CONTENT. There are two ways of labeling the gold content of raw and unprocessed gold which are commonly being used in the field today.