Plants can draw gold from earth
Thursday 08 October 1998
At a price of pounds 178 an ounce, scientists believe it is commercially feasible to extract gold deposits using the "phytomining" method.
The scientists, who reporttheir experiments in the journal Nature, said the crop of gold was improved by spraying the soil with ammonium thiocyanate. It is commonly used for making gold soluble in mining operations. "The possibility of turning base metals into gold has intrigued many scientists since the early alchemists, and the discovery of significant gold uptake by plants has long been a philosopher's stone," said Robert Brooks, head of the research team at Massey University in Palmerston North, New Zealand.
To be economically viable a plant would have to accumulate around 17 micrograms of gold. The scientists succeeded in harvesting one plant, Brassica juncea, with 57 micrograms. More typical values were between nine and 19 micrograms.
Regular cast member Ste Hay, played by Kieron Richardson, is about to test TV boundaries
- 1 Lee Evans announces retirement from comedy on The Jonathan Ross Show
- 2 Pirelli calendar 2015: The problem with 'plus-size' models like Candice Huffine
- 3 These grandmas smoking weed for the first time are wonderful
- 4 Woman opens professional cuddling shop – gets 10,000 customers in first week
Jeff Fletcher dead: Britpop guitarist is decapitated by lorry in horrific traffic accident
These grandmas smoking weed for the first time are wonderful
Jimmy Ruffin dead: Motown legend, who wrote 'What Becomes of the Brokenhearted', dies aged 78
New York snowstorm: Five dead and state of emergency declared as 'wall of snow' buries Buffalo
Woman opens professional cuddling shop – gets 10,000 customers in first week
G20 summit: Enter Putin. Accompanied by four warships. To the sound of mockery
'Muslims pre-date Columbus in discovering America,' says Turkish president Erdogan
David Cameron 'compares Vladimir Putin’s Russia to Nazi Germany' ahead of tense meeting
Former Tory PM Sir John Major says 'we would not have an NHS without migrants'
France 'blocks' Russian sailors from boarding a warship
G20 summit: David Cameron warns Vladimir Putin that Russia's relationship with the West is at a 'fork in the road' over Ukraine
Benefits: Argyll Scott International: Argyll Scott is recruiting for a Permane...
£30000 - £50000 per annum + EXCELLENT: Austen Lloyd: COMMERCIAL PROPERTY SOLI...
Benefits: Argyll Scott International: Due to further expansion, a leading inte...
£27000 - £32000 per annum + training: Langley James : Senior Technician; Promo...