Mineralogy and processing characteristics of arsenical gold ores

Summary

Samples of three arsenical gold ores – Lancefield, Paddington (Western Australia) and Cassilis (Victoria) – were subjected to fine milling followed by cyanidation to determine the amount of leachable gold, followed by detailed mineralogical investigations to explain the different responses to leaching obtained.

Various aspects of processing arsenical ores are discussed.

Keywords: gold, arsenopyrite, milling, leaching, mineralogy