Elemental gold (and silver as well) is soluble in mercury, so that, when particles of the metal are brought into contact with a fresh mercury surface, they are wetted and dissolved, forming an alloy called amalgam. This phenomenon is exploited for the recovery and concentration of fine particulate gold or silver.
South Africa accounted for 15% of the world's gold production in 2002 and 12% in 2005, though the nation had produced as much as 30% of world output as recently as 1993. Despite declining production, South Africa's gold …
It is estimated that around 80 000 tons of electronic waste are generated in South Africa per year. For every million cell phones that are recycled, 16 tons of copper, 350 kg of silver, 195 kg of gold and 15 kg of palladium can be recovered, yet only 12.5% of all electronic waste is currently recycled.
Major gold-producing countries include South Africa, the United States, Australia, Mexico, Peru, Canada, China, India and Russia. South Africa is the leading gold-producing country, followed by the United States and Australia. In the United States, Nevada is the leading gold producer.
world (in order) are China, US, Australia, South Africa and Russia. In addition to gold that comes from mines, an additional 1,500MT of annual global output on average comes from recycling (World Gold Council 2011). Figure 1: The distribution of gold mine production in Africa (averaged between 2005 and 2009).