Earth’s core is leaking gold– www.popsci.com

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Contrary to conspiracy theories, the Earth’s core isn’t hollow. The dense, hot ball instead contains a stew of precious metals including platinum, ruthenium, and pretty much all of the planet’s gold. As lucrative as that sounds, there’s essentially no way humanity will ever access this natural treasure chest buried beneath more than 1,850  feet of solid rock. But according to recent discoveries made at volcanoes in Hawai’i, trace amounts of some of those coveted metals are seeping up from the planet’s deepest reaches.

“When the first results came in, we realized that we had literally struck gold,” Nils Messling, a geochemist at Göttingen University, said in a statement. “Our data confirmed that material from the core, including gold and other precious metals, is leaking into Earth’s mantle above.”

Messling and collaborators explained their findings in a study published on May 21 in the journal Nature. The team recently detected trace amounts of the precious metal ruthenium while analyzing volcanic rock samples collected across the islands of Hawai’i. More specifically, they noted the unexpected presence of the ruthenium isotope, ¹⁰⁰Ru.

“Unexpected” is the key word there. While ¹⁰⁰Ru does exist in Earth’s mantle, it’s slightly more abundant inside of the core—alongside 99.999 percent of the planet’s gold and other precious metals. That’s because during the planet’s formation about 4.5 billion years ago, some of the ruthenium that is locked inside Earth’s core originated from a different source than the small amount found in the mantle today. The discrepancies between these two forms of ruthenium is so slight that the equipment used by geologists to study these isotopes hasn’t been able to tell the two apart.