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Energy Reporters

“They’ve Cracked the Alchemist’s Code”: US Fusion Firm Claims Reactor Can Turn Mercury Into Gold and Scientists Are Divided

In a groundbreaking development poised to revolutionize both the energy sector and material science, a Silicon Valley firm claims to have discovered a method to transmute mercury into gold using nuclear fusion technology, potentially transforming ancient alchemical dreams into modern economic realities.
Rosemary PotterRosemary Potter07/27/202510
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Illustration of nuclear fusion reactors transmuting mercury into gold, generated by artificial intelligence.
Illustration of nuclear fusion reactors transmuting mercury into gold, generated by artificial intelligence.
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IN A NUTSHELL
  • 🔬 Marathon Fusion claims to have discovered a method to transmute mercury into gold using nuclear fusion technology.
  • 💡 The process involves bombarding mercury-198 with neutrons inside a fusion reactor to create stable gold-197.
  • 💰 This innovation could generate up to $550 million worth of gold per gigawatt of fusion energy annually, significantly boosting nuclear fusion’s economic viability.
  • 🧪 The approach leverages a specialized fusion blanket design to maximize gold production without impacting energy output.

In a groundbreaking claim that has captured the attention of both scientists and enthusiasts of alchemical legends, Marathon Fusion, a Silicon Valley-based engineering firm, asserts it has discovered a scalable method to transform mercury into gold. This announcement, detailed in a yet-to-be-peer-reviewed paper, promises to revolutionize how we perceive nuclear fusion, potentially turning a common element into one of the most precious metals on Earth. The process, which hinges on nuclear fusion technology, could not only fuel scientific curiosity but also provide a substantial economic incentive for the development and deployment of fusion reactors.

Turning Mercury into Gold

The method proposed by Marathon Fusion involves a fascinating process where an isotope of mercury-198 is bombarded with neutrons inside a fusion reactor. This interaction transforms the isotope into mercury-197, which then decays into stable gold-197, the naturally occurring form of gold. The majority of nuclear fusion systems operate by fusing deuterium and tritium, heavier forms of hydrogen, to produce helium, high-speed neutrons, and a tremendous amount of energy.

Within this system, neutrons are typically stored in a breeding blanket, a critical component that surrounds the plasma. This setup aids in achieving tritium self-sufficiency by breeding tritium fuel from lithium. Marathon Fusion’s innovation involves introducing a bit of mercury into this breeding blanket. As the mercury-198 is converted to mercury-197, it eventually turns into gold, presenting a new frontier in fusion technology.

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Making Nuclear Fusion a Lucrative Energy-Generating Activity

The implications of this discovery are staggering. According to estimates from Marathon Fusion’s founders, one gigawatt of fusion electricity could produce up to 11,023 pounds of gold annually. This amount of gold could be valued at over $550 million per year per gigawatt of fusion energy, according to a report by ZME Science. If realized, this process could nearly double the revenue of a typical nuclear fusion power plant, making fusion energy not just a cleaner alternative but an economically attractive one as well.

This approach, as outlined by the authors, could subsidize the deployment of terawatts of fusion power without market saturation, thanks to the high value of gold. The paper emphasizes that fusion is uniquely capable of producing large quantities of high-energy neutrons, essential for driving new and valuable transmutation pathways, unlike traditional fission reactions.

“This Reactor Is a Game-Changer for America”: US Launches World’s First Nuclear Plant Producing Hydrogen, Triggering a New Era in Clean Energy

Innovative Fusion Blanket Design

The paper further details a proposed design for a two-layer fusion blanket composed of an “inner blanket” and an “outer blanket.” These layers are tailored to different neutron energy spectra, allowing for optimized reactions. The inner blanket is specifically designed to maximize the generation of gold, utilizing the fast 14 MeV neutrons from the deuterium-tritium fusion plasma to enable the desired reaction pathways at scale.

This innovative approach does not negatively impact electricity production and aligns with the demanding tritium breeding requirements of fusion power plant design. As such, it represents a significant leap forward in making fusion energy economically viable, offering a dual benefit of clean energy and valuable byproduct in gold.

“America Moves at Lightning Speed”: Federal Authorities Greenlight Fast-Track Permit for Groundbreaking 345 MW Nuclear Reactor Construction in Record Time

The Bigger Picture of Chrysopoeia

The concept of transforming base metals into gold, historically known as chrysopoeia, has been a subject of fascination and pursuit for centuries. While small-scale demonstrations have occurred using particle accelerators, none have proven economically viable until now. Marathon Fusion’s scalable method of synthesizing stable gold from mercury via (n, 2n) reactions in a specialized neutron multiplier layer of a fusion blanket could change this narrative.

By implementing this concept, fusion power plants could potentially double their revenue, enhancing the economic feasibility of fusion energy and pushing the boundaries of what is possible in nuclear science. This breakthrough raises intriguing possibilities for the future of both energy production and material science, blending ancient dreams with cutting-edge technology.

As we stand on the brink of potentially realizing the age-old dream of alchemists, the question remains: how might this new capability transform not just the energy sector, but the global economy and our understanding of elemental science?

This article is based on verified sources and supported by editorial technologies.

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Rosemary Potter
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Rosemary Potter is a Berlin-based journalist for Energy Reporters, covering European energy markets, cross-border policy, industry innovation, and the challenges of energy transition. With journalism training in the U.S., she combines investigative depth with a continental outlook. Her reporting amplifies the perspectives shaping Europe’s energy future across sectors, borders, and technologies. Contact: [email protected]

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View 10 Comments
10 Comments
  1. rachel on 07/27/2025 9:14 AM

    Is this the modern-day Philosopher’s Stone? 🤔

    Reply
  2. amir7 on 07/27/2025 9:48 AM

    Wow, turning mercury into gold? What’s next, lead into platinum? 😂

    Reply
  3. joshuaray1 on 07/27/2025 10:22 AM

    How do they ensure the process is safe and doesn’t release harmful toxins? 🌍

    Reply
  4. Runswithbeer on 07/27/2025 10:30 AM

    Nope… if it were that easy the price of Gold would crash.

    Reply
  5. roland on 07/27/2025 10:57 AM

    Seems too good to be true. Has any independent lab verified their claims?

    Reply
  6. David_sublime on 07/27/2025 11:29 AM

    Thank you for sharing this intriguing breakthrough! Can’t wait to see how it develops. 😊

    Reply
  7. Khadijaelixir on 07/27/2025 12:04 PM

    What are the environmental impacts of this process? Can they be mitigated?

    Reply
  8. Roman3 on 07/27/2025 12:37 PM

    Alchemists of the past would be proud! 👏

    Reply
  9. richarddawn8 on 07/27/2025 1:13 PM

    Seems like a plot from a sci-fi novel. Are we sure this isn’t fiction? 📚

    Reply
  10. romanutopia on 07/27/2025 1:46 PM

    Can this technology be adapted for other elements?

    Reply
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Trending
explore the potential of hydrogen as a clean and sustainable energy carrier for the future, highlighting its role in reducing carbon emissions and supporting renewable energy integration.
The role of hydrogen as a future clean energy carrier
explore the latest energy innovations driving the development of smart cities in 2026, focusing on sustainable, efficient, and intelligent urban solutions.
Energy innovations shaping smart cities in 2026
learn effective methods to assess the carbon footprint of your energy consumption and discover practical tips to reduce your environmental impact.
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