Research reveals a method to trace sought-after sustainable metals from Earth’s depths

In a recent study by Australian researchers at Macquarie University, the team discussed how low temperature and carbon-rich melts can bring concentrations of valuable metals from deep within the Earth’s mantle for renewable energy technologies. The study involved high-pressure and high-temperature experiments creating molten carbonate material similar to conditions in the mantle.

The research highlighted that carbonate melts can dissolve and carry critical metals like nickel, copper, cobalt, gold, silver, and oxidized sulfur from surrounding rocks in the mantle. Dr. Isra Ezad, a postdoctoral research student at Macquarie’s School of Natural Sciences, mentioned, “We show this molten rock containing carbon takes up sulfur in its oxidized form, while also dissolving precious and base metals.”

With the increasing demand for essential metals in the future, the study emphasizes the importance of tracking carbonate melts as a potential source of ‘green’ metals. Dr. Ezad stressed the significance of reliable sources for these metals, making this research even more crucial. The findings were published in the journal Science Advances, showcasing the potential of these carbon-rich melts in the Earth’s interior mantle.

The study reveals a promising discovery in the field of renewable energy technologies, shedding light on how these low-temperature melts can extract valuable metals efficiently. As the world shifts towards sustainable practices, understanding the mechanisms behind the extraction of metals from deep within the Earth could play a crucial role in meeting the increasing demand for these resources. The research opens new possibilities for harnessing ‘green’ metals for future applications in renewable energy technologies.