Trees mark the spot of buried gold

Tiny bits of the precious metal in eucalyptus leaves indicate much more belowground

By Beth Mole, 09:49 AM October 22, 2013

Traces of treasure in eucalyptus tree leaves may signal a hidden trove of gold under the surface, according to a new study.

Researchers have previously noticed small amounts of the precious metal in and around eucalyptus trees, but they didn’t know if the plants were soaking up gold from the ground or from windblown dust. Geochemist Melvyn Lintern of the Commonwealth Scientific and Industrial Research Organization in Kensington, Australia and colleagues used X-ray imaging to tally the tiny bit...

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