Shared origins for the Yilgarn's precious metals?
About this episode
Matt Demmer discusses the unexpected discovery of Australia's largest platinum deposit and the implications for understanding mineral systems.
Australia's largest platinum deposit was hiding 70km from Perth CBD, and nobody had thought to look. In 2020, Chalice Mining drilled the very first hole at a site on the western edge of the Yilgarn Craton, ancient geology everyone had ignored because the exciting stuff was supposed to be much further away from the city.... That hole hit platinum, palladium, nickel, and copper. It was Australia's largest PGE discovery in history. There is a road that passes within 200 metres of it. Generations of geologists drove right by. Matt Demmer is one of the economic geologists working to understand the Gonneville deposit ever since, first with Chalice Mining, now also completing his PhD at the ARC Centre for Critical Resources. He joins Holly and Anthony to discuss how you find things nobody expected, what the sulfur isotopes inside the rocks are whispering about deep Earth recycling, and why thinking about mineral systems as interconnected planet-wide stories might be the key to finding the next one. A 15-year industry career feeding directly into frontier academic research: as Holly puts it, spectacularly punk geology. ---- Make sure you're following Wonder wherever you get your podcasts…
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