Gold particles found in Australian eucalyptus trees
Gold particles were found in leaves of eucalyptus tree in Western Australia, according to researchers at the Earth Science and Resource Evaluation (CSIRO). The discovery was published in Nature Communications, advances the National Geographic, and indicates that the eucalyptus trees with large roots â€" which can reach 40 feet deep â€" steal gold ore deposits and store it in their leaves."Eucalyptus acts as a hydraulic pump-its roots extend tens of meters into the soil and suck the water containing gold. As the metal is toxic to the plant, the substance is expelled to the leaves and branches, "says the research.Still, the ore concentration is very low â€" 46 parts per billion--that is, less than 0.000005% of the weight of each leaf. To make a gold ring would require 500 trees, advances the study.The real usefulness of discovery is not in wealth that comes from holding, of course, but the fact that she will help companies to find untapped deposits. This method promises to be more eco-friendly â€" even if, ideally, the particles should stay where they are.For this discovery, researchers, led by Melvyn Lintern, compared the Eucalyptus leaves from nearby Australian prospectors with leaves of the same species, created in an oven. In the lab, half grew up with soil dosed with particles of gold, while the other half had natural soil. The comparison is elaborated in the document published.
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