Marathon Fusion says it made stable gold from mercury
The claim goes beyond the company's earlier simulation-based proposal; a separate lithium-isotope result has outside lab certification.
By Ryan Merket · Published
Primary source: X
Why it matters
Marathon Fusion's gold claim would be a major step beyond its published simulations, but the thread supplies no experimental data. Its lithium-isotope enrichment result has stronger support, including outside laboratory certification, and targets a practical fusion supply-chain need.

Marathon Fusion says it has turned mercury into stable gold using fusion neutrons, a claim that would move its 2025 proposal from computer simulations to an experiment. The San Francisco startup offered no experimental data in its October 21st X thread, and its gold production claim has not been independently verified in public reporting.
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