Français
3. Gold mineralogy and refractory minerals
Due to its low reactivity or absence (high ionization potential and redox standard potential...), gold is found in nature in a small number of minerals (table 2 ). Only metallic gold and its silver alloy, electrum, are soluble in dilute cyanide solutions. Gold tellurides, antimonide and gold bismuthide are insoluble or only very slightly soluble.
In many gold ores, it has been noted that, unlike native gold ores, there are ores that are refractory to cyanidation, other than the telluride ores already mentioned.
An ore is considered refractory if gold extraction with cyanide after grinding and physical concentration is less than 80%.
This led us to establish a link between the cyanide solution and the mineralogical...
The Ultimate Scientific and Technical Reference
This article is included in
Metal manufacturing processes and recycling
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Gold mineralogy and refractory minerals
Metallogeny: the different types of gold deposits
Economic data
1. Mining production
Table 1 gives production figures for the main producing countries, and table 2 summarizes production by country group. World production is clearly on the rise, despite...
Bibliography
References
International metallurgical and mining companies
Non-exhaustive list
AngloGold http://www.anglogold.com
Ashanti http://www.ashantigold.com
Avgold Ltd.
Gold companies in France
Non-exhaustive list
Engelhard – CLAL
Valme Industrie
The Ultimate Scientific and Technical Reference
