- Pulsar Helium’s (TSXV:PLSR) Jetstream #1 well at the Topaz Project in Minnesota revealed helium-3 concentrations up to 14.5 ppb, among the highest ever publicly reported in a terrestrial gas reservoir
- Helium-3 is valued at ~US$18.7 million/kg due to its rarity and critical applications in fusion energy, quantum computing, and nuclear security, making this find commercially and geopolitically important
- The reservoir shows a consistent ³He / ⁴He ratio of 0.09 R? indicating a single, stable helium source enriched in both helium-3 and helium-4, setting Topaz apart from other known helium fields
- Pulsar Helium stock (TSXV:PLSR) last traded at $0.45
Pulsar Helium (TSXV:PLSR) announced a landmark scientific and strategic breakthrough at its Topaz Project in northern Minnesota, revealing one of the highest concentrations of naturally occurring helium-3 ever publicly reported in a terrestrial gas reservoir.
Laboratory analysis of gas samples from the Jetstream #1 appraisal well confirmed sustained helium-3 concentrations reaching up to 14.5 parts per billion (ppb). This places Topaz among the most helium-3-rich terrestrial sources globally, surpassing even lunar regolith averages targeted by NASA and other space agencies.
The discovery also builds on Pulsar’s earlier findings, which showed a sustained flow of 7–8 per cent helium-4, the more common isotope. The consistent ³He / ⁴He isotopic ratio of 0.09 R? (a normalized isotopic ratio), across all samples suggests a stable, homogeneous helium source—an anomaly in terrestrial reservoirs where helium-3 is typically found only in trace amounts.
Significance of helium-3
Helium-3 is one of the rarest and most valuable isotopes on Earth, commanding prices of up to US$18.7 million per kilogram. Its unique properties make it indispensable for:
- Quantum computing and ultra-low temperature cryogenics
- Neutron detection for nuclear security
- Advanced scientific instrumentation
- Fusion energy research, where helium-3 is a potential fuel source with minimal radioactive waste
With lunar helium-3 concentrations averaging around 4 ppb, Pulsar’s terrestrial discovery offers a compelling alternative to costly and complex lunar extraction efforts. The Topaz reservoir’s helium-3 levels not only rival but may exceed those found on the Moon.
A new frontier for helium exploration?
Compared to recent industry discoveries—such as a sub-ppb helium-3 find in Australia—Pulsar’s results represent a quantum leap. The company’s Jetstream #1 well has now set a new benchmark for helium-3 concentration in land-based reservoirs.
“To encounter helium-3 concentrations of this magnitude at our Topaz Project in Minnesota is nothing short of extraordinary,” Thomas Abraham-James, president and CEO of Pulsar, commented in a news release. “This achievement not only validates the exceptional nature of the Topaz Project but also underscores the strategic importance of our exploration efforts. Helium-3 is a game-changer isotope with tremendous scientific and commercial value. The fact that we have discovered such high levels in the USA, when helium-3 is so scarce globally, is testament to the world-class potential of Topaz. Meanwhile, the next-richest naturally occurring source of helium-3 is arguably the surface of the Moon which has attracted interest from NASA and the U.S. Department of Energy – we believe that Minnesota will be a more reliable and economically viable option. This discovery positions Pulsar at the forefront of the helium industry not just as a supplier of conventional helium (helium-4), but potentially as a supplier of helium-3.”
Next steps and collaboration
Pulsar is actively seeking collaborators to develop scalable helium-3 separation technologies, as no commercial method currently exists to isolate helium-3 from helium-4 at scale. The company invites research institutions and technology developers to engage in trials and joint ventures at Topaz.
About the Topaz Project
Located in northern Minnesota, the Topaz Project is Pulsar Helium’s flagship exploration site. The Jetstream #1 well reached a depth of 5,100 feet in January 2025, followed by Jetstream #2 at 5,638 feet. In August, Jetstream #1 delivered a peak gas flow rate of 1.3 million cubic feet per day, with a sustained helium-4 concentration of 7–8 per cent.
A multi-well drilling campaign is set to begin in October 2025 to further delineate the reservoir and support Pulsar’s ambition to become a leading global helium supplier.
About Pulsar Helium
Pulsar Helium is advancing its flagship Topaz project in Minnesota, USA, and the Tunu project in Greenland, both of which feature primary helium occurrences not associated with hydrocarbon production.
Pulsar Helium stock (TSXV:PLSR) last traded at $0.45 and rose 5.88 per cent in the month of September 2025 but is down 35.71 per cent since the year began.
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