The project is one of the largest gold deposits discovered in the last 20 years.
In addition to using the living system as artwork, Brown made a series of images with a scanning electron microscope, and using the techniques to create illuminated manuscripts, he applied gold leaf to the regions of the prints where the bacterial gold deposits were found.
FORBES: FOCUS: 'Microbial Alchemy' Produces Gold From Toxic Chemical
Olympic Dam is also the fourth-largest copper resource globally, and among the top 10 gold deposits.
But the real attraction is Friedland himself and his tales of copper and gold deposits buried under the Gobi Desert.
X, claimed to have discovered one of the world's biggest-ever gold deposits is that it occasioned one of the world's biggest-ever frauds.
Harmony's aim in bidding for Gold Fields is plain enough: it wants to get its hands on more of South Africa's gold deposits despite the rising cost of producing the stuff there.
South Korea's Yonhap news agency reported that the corporation hoped to exploit deposits of iron ore, gold and copper in other parts of the Tanzania to help fund its project.
Its portfolio of assets includes the fabled Grasberg mineral district in Indonesia which has the single largest recoverable deposits of copper and gold.
Often that is why it is kept as gold in the first place, rather than in more visible bank deposits.
The government says the mining is illegal, but in this rural Muslim region of north-western Nigeria it has been going on for generations - and it was a discovery of greater deposits that has led to the recent boom in digging for gold.
Most of this feeds demand for gold jewellery in rural India, where the only other investment options are bank deposits and land.
In normal times the opportunity cost of holding non-yielding gold, instead of interest-bearing bank deposits or government bonds, is high.
The Oyu Tolgoi deposits reportedly contain 79 billion pounds of copper and 45 million ounces of gold.
Quite apart from its huge gold deposits, Ghana has diamonds and more than its fair share of many more of the world's most precious minerals.
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