Marathon Fusion Plans to Transform Mercury into Gold via Nuclear Fusion Technology
Marathon Fusion, founded in 2023, aims to transform mercury into gold using nuclear fusion technology, proposing a process that involves a tokamak and fast neutrons. Their unverified research suggests that a 1 GW reactor could produce up to 5,000 kg of gold annually, valued at around €582 million, though the gold would remain radioactive for up to 18 years. While the company has raised nearly €10 million and garnered positive expert feedback, the feasibility of their approach and its impact on tokamak operations remain uncertain.
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In May 2025, CERN scientists reported creating nearly 86 billion gold nuclei through lead collisions, resulting in 29 picograms of gold. Founded in 2023 in San Francisco, Marathon Fusion claims to enhance alchemy with nuclear fusion.
Their unverified research outlines a process involving a tokamak, where they propose introducing mercury-198, which could be transformed into stable gold-197 using fast neutrons from deuterium and tritium fusion. The company estimates a 1 GW reactor could produce up to 5,000 kg of gold annually, valued at approximately €582 million.
However, the resulting gold would remain radioactive for up to 18 years before being safe. Despite raising nearly €10 million and receiving positive feedback from experts, the viability of nuclear fusion remains unproven, and potential impacts on tokamak operations must be assessed.
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