Investigation of Refractory Gold Ores. Examination of the Ore from the New Consort Mine, Barberton District PDF Download

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Investigation of Refractory Gold Ores. Examination of the Ore from the New Consort Mine, Barberton District

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Ore from the New Consort Mine was submitted to the Laboratory as one of a number of refractory gold ores from the Barberton district. The results of conventional cyanidation tests and roasting tests carried out in the laboratory led to the conclusion that the sample of ore received is not in fact refractory, because extractions of approximately 96 per cent of the gold have consistently been obtained by conventional cyanidation techniques. This result is in agreement with the predictions of a mineralogical examination carried out in the Laboratory. The results obtained indicate further that roasting before cyanidation, which is the treatment at present given to the ore at New Consort, is, in fact, detrimental to gold extraction.