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Gold Ore Preparation

Sample preparation aqua regia with, occasionally, the addition of hydrofluoric acid is the most used lixiviant, and is applicable to most ore types.Other combinations of acids as well as cyanides are also used, and pre-roasting is sometimes applied.Digestion time and amount of reagent vary, quite naturally, with the amount of acid consuming materials in the sample.Thus, raw ores are.

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