How did gold processing give rise to the term ‘acid test’

A total of 186,700 tonnes of gold exists above ground, as of 2015.[7] The world consumption of new gold produced is about 50 per cent in jewellery, 40 per cent in investments, and 10 per cent in industry.[8] Gold is resistant to most acids, though it does dissolve in aqua regia, a mixture of nitric […]

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Industry Queensland
Industry Queensland