INFOGRAPHIC: Unearthing the World’s Gold SupplySubmitted by DJP333 on Thu, 04/03/2014 - 23:52
THE 2014 GOLD SERIES: PART 2 OF 5
This infographic, part two in our 2014 Gold Series, covers the full supply picture behind the yellow metal. See Part 1: A Visual History Of Gold here.
Within the planet’s crust, there is only 1 gram of gold for every 250 tonnes (550,000 lbs) of earth. Gold’s rarity means that finding economic deposits is extremely difficult. To understand how gold mining and supply work, we must first unearth how gold deposits form.
Over time, gold dissolves in hot water deep in the crust under immense pressure. It is then transported and deposited upwards as the water travels up cracks and fissures towards the surface. Generally, the major gold deposit types include: placer, volcanogenic massive sulphide (VMS), epithermal, porphyry, carlin-type, and orogenic deposits.