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Iron oxide copper gold ore deposits (IOCG) are important and highly valuable concentrations of copper, gold and uranium ores hosted within iron oxide dominant gangue …
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The largest, most profitable copper mines have been open-pit mines, although underground copper mines are not uncommon. Of particular importance in an open-pit mine is a resource that is ...
Iron oxide copper gold ore deposits - Wikipedia
Iron oxide copper gold ore deposits (IOCG) are important and highly valuable concentrations of copper, gold and uranium ores hosted within iron oxide dominant gangue assemblages which share a common genetic origin.
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Gold extraction. Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.
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The two gold refining methods most commonly employed to derive pure gold are: the Miller process and the Wohlwill process. The Miller process uses gaseous chlorine to extract impurities when gold is at melting point; impurities separate into a layer on the surface of the molten purified gold.
IOCG Iron Oxide Copper Gold Ore Deposits
IOCG Iron Oxide Copper Gold Ore Deposits goes with porphyries as they are also loosely associated with a large felsic intrusions and form at moderate depths, unlike the dominantly tertiary porphyries IOCG's tend to be much older and are generally protoizoic in age from 1.1 to 1.8 billion years ago.
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Gold has varying modes of occurrence in sulphide ores ranging from being disseminated and interstitial in minerals such as lead and copper, in oxide ores particularly as disseminated particles, and as free milling gold or association with tellurides.
The Application of Diagnostic Leaching to Copper and Gold Ores
The Application of Diagnostic Leaching to Copper and Gold Ores by Dr. Corby G. Anderson Director of The Center for Advanced Mineral & Metallurgical Processing