Gold cyanidation

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Cyanide leaching

Cyanide leaching was first applied to extract gold from pyritic ore, which prior to the discovery of gold cyanidation could not be extracted. This led to heavy investment in mining in the 1890s and the opening of larger gold mines. Leaching gold with cyanide is still a widely used hydrometallurgical process in today's mining industry. Cyanide methods are applied to samples from many stages of the mining cycle. These methods can be used in exploration on large-sized soil or sediment samples to identify anomalies, or drill samples with known mineralisation to identify cyanide soluble minerals.

Gold by cyanide leach analysis

Cyanide leaches are a routine analytical method used during resource drilling as a first pass estimation of how an ore will behave during cyanide hydrometallurgical processing. ALS has a number of method options available for cyanide leach with AAS finish.