Their research, published in the journal Nature Communications,
suggested plants were absorbing gold particles found around the soils of
eucalyptus trees, Dr Lintern explained.
“The eucalypt acts as a hydraulic pump – its roots extend tens of metres into the ground and draw up water containing the gold.
the gold is likely to be toxic to the plant, it’s moved to the leaves
and branches where it can be released or shed to the ground.
leaves could be used in combination with other tools as a more cost
effective and environmentally friendly exploration technique.” Continue
Dr Lintern added that by using this technique of
sampling and analysing vegetation for traces of minerals, it may be
easier to observe what occurs below the surface without the need to
He said: “It’s a more targeted way of searching for minerals that reduces costs and impact on the environment.”
before you grab your passport and ax, the paper found an average gold
concentration of 80 parts per billion in tree’s leaves, and a mere 4
parts per billion in bark (though bark does cover a larger surface
Unfortunately, this means the gold isn’t visible to the unclad
eye. So the next time someone tells you money doesn’t grow on trees,
well, you know what to say.