IsoEnergy and Purepoint Report Assay Grades of up to 5.4% U₃O₈ from Initial Holes at the Nova Discovery on the Dorado JV
IsoEnergy (NYSE American: ISOU) and Purepoint Uranium reported significant uranium mineralization from initial assays at their joint venture Dorado project's Nova Discovery in Saskatchewan's Athabasca Basin. Drill hole PG25-05 yielded 2.2% U₃O₈ over 1.0 metre, including an impressive 5.4% U₃O₈ over 0.3 metres, while PG25-04 returned 1.0% U₃O₈ over 0.6 metres.
The discovery confirmed high-grade uranium in a steeply dipping, brittle basement fault that remains open to the northeast. Notably, assays from PG25-07, which recorded the strongest radioactivity readings to date (peaking at 110,800 CPS), are still pending. The companies plan follow-up drilling to extend the mineralized trend northeast during winter when frozen ground enables land-based access.
IsoEnergy (NYSE American: ISOU) e Purepoint Uranium hanno riportato una mineralizzazione significativa di uranio dai primi saggi nel progetto congiunto Dorado, alla scoperta Nova nella regione di Athabasca Basin, Saskatchewan. Il foro di sondaggio PG25-05 ha rilevato 2,2% di U₃O₈ su 1,0 metro, inclusi un notevole 5,4% di U₃O₈ su 0,3 metri, mentre PG25-04 ha restituito 1,0% di U₃O₈ su 0,6 metri.
La scoperta ha confermato la presenza di uranio ad alta gradazione in una faglia basamentale fragile con inclinazione ripida, ancora aperta verso nord-est. In particolare, i saggi di PG25-07, che ha registrato le letture di radioattività più elevate finora (picco a 110.800 CPS), sono ancora in attesa. Le società prevedono di effettuare ulteriori perforazioni per estendere la tendenza mineralizzata verso nord-est durante l'inverno, quando il terreno ghiacciato permette l'accesso via terra.
IsoEnergy (NYSE American: ISOU) y Purepoint Uranium informaron una mineralización significativa de uranio a partir de los análisis iniciales en el proyecto conjunto Dorado, en el descubrimiento Nova, ubicado en la Cuenca de Athabasca, Saskatchewan. El pozo de perforación PG25-05 arrojó un 2,2% de U₃O₈ en 1,0 metro, incluyendo un destacado 5,4% de U₃O₈ en 0,3 metros, mientras que PG25-04 retornó un 1,0% de U₃O₈ en 0,6 metros.
El descubrimiento confirmó uranio de alta ley en una falla basal frágil con una inclinación pronunciada, que permanece abierta hacia el noreste. Cabe destacar que los análisis de PG25-07, que registró las lecturas de radiactividad más altas hasta la fecha (pico de 110.800 CPS), aún están pendientes. Las empresas planean realizar perforaciones adicionales para extender la tendencia mineralizada hacia el noreste durante el invierno, cuando el suelo congelado permite el acceso terrestre.
IsoEnergy (NYSE American: ISOU)와 Purepoint Uranium은 사스카츄완 주 아타바스카 분지의 공동 투자 프로젝트인 Dorado의 Nova 발견에서 초기 분석 결과 상당한 우라늄 광화 작용을 보고했습니다. 시추공 PG25-05에서는 1.0미터 구간에서 2.2% U₃O₈이 확인되었으며, 그 중 0.3미터 구간에서는 5.4% U₃O₈이 나타났고, PG25-04에서는 0.6미터 구간에서 1.0% U₃O₈이 확인되었습니다.
이번 발견은 북동쪽으로 열려 있는 가파르게 기울어진 취성 기저 단층에서 고등급 우라늄이 존재함을 확인했습니다. 특히 지금까지 가장 강한 방사능 수치(최대 110,800 CPS)를 기록한 PG25-07의 분석 결과는 아직 대기 중입니다. 양사는 겨울철 얼어붙은 지면을 이용한 육상 접근이 가능할 때 광화 경향을 북동쪽으로 확장하기 위한 추가 시추를 계획하고 있습니다.
IsoEnergy (NYSE American : ISOU) et Purepoint Uranium ont rapporté une minéralisation significative d'uranium à partir des premiers essais sur leur projet conjoint Dorado, la découverte Nova dans le bassin d'Athabasca en Saskatchewan. Le forage PG25-05 a révélé 2,2% de U₃O₈ sur 1,0 mètre, incluant un impressionnant 5,4% de U₃O₈ sur 0,3 mètre, tandis que PG25-04 a donné 1,0% de U₃O₈ sur 0,6 mètre.
Cette découverte a confirmé la présence d'uranium à haute teneur dans une faille basale cassante à forte inclinaison, toujours ouverte au nord-est. Notamment, les résultats des essais de PG25-07, qui a enregistré les lectures de radioactivité les plus élevées à ce jour (pic à 110 800 CPS), sont encore en attente. Les entreprises prévoient des forages de suivi pour prolonger la tendance minéralisée vers le nord-est durant l'hiver, lorsque le sol gelé permet un accès terrestre.
IsoEnergy (NYSE American: ISOU) und Purepoint Uranium meldeten bedeutende Uranmineralisierung aus den ersten Analysen ihres Gemeinschaftsprojekts Dorado, der Nova-Entdeckung im Athabasca-Becken in Saskatchewan. Bohrloch PG25-05 ergab 2,2% U₃O₈ über 1,0 Meter, darunter ein beeindruckender Abschnitt mit 5,4% U₃O₈ über 0,3 Meter, während PG25-04 1,0% U₃O₈ über 0,6 Meter lieferte.
Die Entdeckung bestätigte hochgradiges Uran in einer steil einfallenden, spröden Grundgebirgsverwerfung, die nach Nordosten offen bleibt. Bemerkenswert sind die noch ausstehenden Analysen von PG25-07, das bisher die stärksten Radioaktivitätswerte aufwies (Spitzenwert 110.800 CPS). Die Unternehmen planen Folgebohrungen, um den mineralisierten Trend im Winter, wenn gefrorener Boden den Landzugang ermöglicht, nach Nordosten zu verlängern.
- High-grade uranium mineralization confirmed with up to 5.4% U₃O₈
- Discovery remains open to the northeast, indicating expansion potential
- Strongest radioactivity readings (110,800 CPS) from PG25-07 suggest potential for higher grades
- Multiple mineralized intercepts across different drill holes demonstrate consistency
- Winter conditions required for follow-up drilling, causing potential delays
- True widths of mineralization currently unknown
- Some core loss reported in drilling intervals
Insights
IsoEnergy and Purepoint confirm high-grade uranium discovery with 5.4% U₃O₈ assays, validating Nova's potential as a significant mineralized structure.
The assay results from the Nova Discovery at the Dorado joint venture represent a significant uranium mineralization confirmation in Saskatchewan's prolific Athabasca Basin. The reported grades - particularly
The geological context is particularly promising. The mineralization occurs in a steeply dipping, brittle basement fault that remains open to the northeast, suggesting potential for expansion along strike. The structural control of mineralization follows the typical pattern of high-grade Athabasca uranium deposits, where faults act as conduits for mineralizing fluids.
The most significant technical indicator is that hole PG25-07 (assays pending) recorded substantially stronger radioactivity readings peaking at 110,800 counts per second - about 10 times higher than the average readings across the 14-meter mineralized zone. This suggests potential for even higher grades than already reported. The presence of pitchblende (primary uranium mineral) in reddish-brown altered granitic gneiss is textbook uranium mineralization in this region.
The hydrothermal alteration patterns observed - including clay alteration, hematite, chloritization, and silicification - are classic hallmarks of productive uranium systems in the Athabasca Basin. These alteration halos typically surround high-grade deposits and provide vectors toward mineralization centers.
While still early-stage, the technical characteristics suggest this could potentially develop into a significant uranium deposit if mineralization continuity is established through follow-up drilling planned for winter.
From a uranium market perspective, new high-grade discoveries in the Athabasca Basin are increasingly significant given the current nuclear renaissance and uranium supply deficit. With
The timing of this discovery is particularly favorable within the uranium cycle. Global utilities are actively contracting for long-term uranium supply amid concerns about security of supply, and producers with development-stage assets in tier-one jurisdictions like Saskatchewan are especially well-positioned. High-grade discoveries can potentially be fast-tracked to production with lower capital intensity compared to lower-grade deposits.
For IsoEnergy specifically, this discovery complements their portfolio that includes the Hurricane deposit, enhancing their position as an emerging uranium developer. For junior partner Purepoint, this represents a potential company-making discovery that could transform their market position.
The technical characteristics - including the thickness (14 meters of mineralization in hole PG25-07), substantial radioactive readings, and open-ended nature of the structure - suggest this could potentially advance toward resource definition if follow-up drilling confirms continuity. The winter drilling program will be pivotal in determining whether this represents an economic discovery.
What distinguishes this discovery from many exploration announcements is the confirmation of actual uranium grades rather than just radiometric anomalies. The presence of visible pitchblende and the classic alteration halos (hematite, chlorite) are textbook indicators of productive uranium systems in the Athabasca Basin, suggesting this is not merely a radiometric anomaly but a legitimate discovery with economic potential.
Highlights
- Partial assay results received from two of eight diamond drill holes ("DDH") completed during the summer program; additional program details are provided below.
- Select samples from hole PG25-05 averaged
2.2% U₃O₈ over 1.0 metre, including5.4% U₃O₈ over 0.3 metres. - Select samples from hole PG25-04 averaged
1.0% U₃O₈ over 0.6 metres. - Assays validate the mineralization first intersected at Q48 hosted in a steeply dipping, brittle basement fault that remains open to the northeast.
- Complete assays on all holes will be processed and disclosed in due course.
- Follow-up drilling to extend the mineralized trend northeast is planned for the winter, when frozen ground enables land-based access.
"These assays validate the significance of the mineralization first intersected at Q48," said Chris Frostad, President & CEO of Purepoint Uranium. "The grades confirm what we observed in the core and the strong radioactivity readings, establishing Nova as a robust uranium-bearing structure. With PG25-07 still to be assayed, we are continuing to build on the early success of this program."
"Each new hole is giving us a clearer picture of the mineralized system at Nova," said Philip Williams, CEO and Director of IsoEnergy. "The assays from PG25-04 and PG25-05 confirm the strength of the mineralization and reinforce the importance of this discovery. With PG25-07 delivering the highest radioactivity readings so far, we believe its assays will provide valuable insight into how this discovery is evolving."
Table 1: Assay Results from Drill Holes PG25-04 and 05
Hole ID | Azi (o) | Dip (o) | From (m) | To (m) | Length (m) | %U3O8 |
PG25-04 | 295 | -60 | 386.3 | 386.9 | 0.6 | 0.96 |
409.1 | 409.5 | 0.4 | 0.15 | |||
PG25-05 | 295 | -60 | 328.9 | 329.9 | 1.0 | 2.19 |
Includes | 329.2 | 329.5 | 0.3 | 5.38 | ||
399.3 | 399.6 | 0.3 | 0.10 |
NOTE: | Intervals are downhole core lengths. True widths of mineralization are unknown. |
Q48 Target Area - DDHs PG25-03 to PG25-07A (5 DDH holes)
Drill hole PG25-03 tested the Eastern Q48 conductor approximately 800 metres southwest of historic hole GG22-32. The hole was collared with a -90 degree dip and encountered weak hematite, limonite and bleached sandstone to the unconformity at 259 metres. An 8.5-metre-wide zone of clay altered sandstone followed by a 1.5-metre-wide interval of core loss were encountered immediately above the unconformity. Initial basement rock included a 6-metre-wide zone of strongly paleoweathered pelitic gneiss with 0.5 metres averaging 690 CPS from the Mount Sopris 2PGA-1000 downhole gamma probe. The hole continues into a 3-metre-wide interval of weakly sheared, strongly hematite and chlorite altered, garnetiferous pelitic gneiss to a depth of 285 metres, then weakly chlorite altered pelitic gneiss to a depth of 308 metres. Unaltered pelitic gneiss was drilled to a depth of 315 metres then unaltered garnetiferous pelitic gneiss to the completion depth of 428 metres. The clay alteration encountered above the unconformity is similar to PG25-06, which is spatially associated with known mineralization, and is considered to warrant follow-up drilling this winter.
Drill hole PG25-04 targeted the Q48 conductor (Figure 1) located approximately 800 metres northwest of IsoEnergy's 2022 drill holes (Figure 2). This drill hole, collared with an azimuth of 295 degrees and dip of -60 degrees, encountered
Hole PG25-05 was collared 44 metres in front of PG25-04 and drilled using the same azimuth of 295 degrees and dip of -60 degrees. This hole intercepted the radioactive structure approximately 40 metres up-dip of PG25-04. The hole encountered the unconformity at 309 metres, paleoweathered granitic gneiss and pegmatites to 371 metres, then garnet-rich pelitic gneiss, locally with pyrite and graphite, to the completion depth of 498 metres. The central mineralized structure was hosted in a sheared / brecciated reddish-brown altered granitic gneiss that returned 1.0 metre of
Drill hole PG25-06 targeted the brittle fault associated with mineralization at the unconformity approximately 20 metres northeast of PG25-05 (Figure 2). This drill hole, collared with an azimuth of 310 degrees a dip of -64 degrees, encountered
Hole PG25-07A, collared from the PG25-04 drill pad using an azimuth of 310 degrees and dip of -61 degrees, was a 70 metre step out to the northeast of the PG25-05 mineralized intercept. The unconformity was intersected at a depth of 322 metres and the drill hole intercepted the radioactive structure approximately 40 metres up-dip of PG25-04. From the unconformity, granitic gneiss with pegmatitic intervals was encountered to a depth of 392 metres that was initially paleoweathered for 25 metres, unaltered for 36 metres, then became chloritized and silicified for 9 metres. Chloritized pelitic gneiss was then drilled from 392 to 441 metres, unaltered graphitic and pyritic pelitic gneiss to 459 metres, followed by unaltered granitic gneiss and pegmatites with minor pelitic gneiss to the completion depth of 548 metres.
The PG25-07A Nova zone mineralization starts within granitic gneiss at 382.3 metres and extends into pelitic gneiss to a depth of 396.3 metres returning an average of 11,100 cps over 14.0 metres. A primary mineralized structure of the Nova zone is hosted in sheared, reddish-brown altered granitic gneiss with pitchblende that returned an average of 82,300 cps over 0.6 metres with a peak of 110,800 cps. A second strongly mineralized interval occurs within lost pelitic gneiss core and returned an average of 46,000 cps over 0.4 metres.
Q2 Target Area - DDHs PG25-01 and PG25-02
PG25-01 was a 320-metre step-out along strike to the northeast of historic drilling and approximately 2.9 kilometres northeast along the same conductor on which
PG25-02 was designed as a 390-metre step-out along strike to the northeast from PG25-01, to test an interpreted break and offset in the Q2 Grid conductor. PG25-02, with an azimuth of 135 degrees and dip of -60 degrees, intersected the unconformity at a depth of 219 metres. A 1-metre-wide zone of elevated radioactivity that starts in the sandstone above the unconformity and continues into the paleoweathered basement hosts the highest down hole gamma peak of 2,530 CPS. Below the unconformity is a 12-metre-wide zone of moderate to strong hematite altered pelitic gneiss followed by 52-metres of granite with weak to moderate hematite and weak chlorite alteration. The hole continues into an 8-metre-wide zone of unaltered pelitic gneiss before ending at a depth of 341 metres in an unaltered granite. The hole failed to explain the conductor and is interpreted to have been collared too far forward.
Turaco Target Area
Drilling is currently progressing within the Turaco Target Area (Figure 1).
About the Dorado JV Project
Dorado (Figure 3) is the flagship project of the IsoEnergy-Purepoint 50/50 joint venture, a partnership encompassing more than 98,000 hectares of prime uranium exploration ground. The Project includes the former
Recent drilling by IsoEnergy east of its Hurricane Deposit has intersected strongly elevated radioactivity in multiple holes. The anomalous radioactivity confirms the continuity of fertile graphitic rock package and further highlights the opportunity for additional high-grade discoveries across the region.
The shallow unconformity depths across the Dorado property—typically between 30 and 300 metres—allow for highly efficient drilling and rapid follow-up on results.
Gamma Logging and Geochemical Assaying
A Mount Sopris 2PGA-1000 downhole total gamma probe was utilized for radiometric surveying. Core samples are submitted to the Saskatchewan Research Council ("SRC") Geoanalytical Laboratories in
The basement rock drill core is NQ in size and samples are created in the field by spitting the core in half. Field duplicate samples are also created in the field by spitting every 30th sample of remaining core; one quarter is sent to the laboratory and one quarter of the core remains in the core box. Data verification includes internal SRC laboratory quality assurance and quality control (QA/QC), blanks, comparison of results of the duplicate samples and variance of standard samples.
References
Alonso, D., Dalidowicz, F., Mondy, J., 1991: Henday Lake Project 1991 Winter Activities and Results, Cogema Canada Limited.
Saskatchewan Mineral Assessment File Number 74I-0053.
Cutts, C. and Lesiczka, M., 2007: Henday Lake Project 2007 Activities and Results, Areva Resources Canada Inc. Saskatchewan
Mineral Assessment File Number 74I08-0071.
Donmez, S., 2013: Hatchet Lake Project, Richardson Lake Area, Winter 2013 Diamond Drilling Program, Denison Mines Corp.
Saskatchewan Mineral Assessment File Number MAW00308
Goulet, D., Pascal, M., and Donmez, S., 2015: Murphy Lake Diamond Drilling Program and Slingram Moving Loop Surface
Transient Electromagnetic Survey, Denison Mines Corp., Saskatchewan Mineral Assessment File Number MAW01724
Munholland, P. and Bingham, D., 1999: Henday Lake Project 1999 Activities and Results, Cogema Resources Inc.
Mineral Assessment File Number 74I09-0062.
Qualified Person Statement
The scientific and technical information contained in this news release relating to IsoEnergy and Purepoint was reviewed and approved by Dr. Dan Brisbin, P.Geo., IsoEnergy's Vice President, Exploration and Scott Frostad BSc, MASc, P.Geo., Purepoint's Vice President, Exploration, who are "Qualified Persons" (as defined in NI 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101")).
For additional information with respect to the current mineral resource estimate for IsoEnergy's Hurricane Deposit, please refer to the Technical Report prepared in accordance with NI 43-101 entitled "Technical Report on the Larocque East Project,
About IsoEnergy Ltd.
IsoEnergy (NYSE American: ISOU; TSX: ISO) is a leading, globally diversified uranium company with substantial current and historical mineral resources in top uranium mining jurisdictions of
About Purepoint
Purepoint Uranium Group Inc. (TSXV: PTU) (OTCQB: PTUUF) is a focused explorer with a dynamic portfolio of advanced projects within the renowned
Additionally, the Company holds a promising VMS project currently optioned to and strategically positioned adjacent to and on trend with Foran Mining Corporation's McIlvenna Bay project. Through a robust and proactive exploration strategy, Purepoint is solidifying its position as a leading explorer in one of the globe's most significant uranium districts.
Neither the Exchange nor its Regulation Services Provider (as that term is defined in the policies of the Exchange) accepts responsibility for the adequacy or accuracy of this Press release.
Cautionary Statement Regarding Forward-Looking Information
This press release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". This forward-looking information may relate to additional planned exploration activities, including the timing thereof and the anticipated results thereof; and any other activities, events or developments that the companies expect or anticipate will or may occur in the future.
Forward-looking statements are necessarily based upon a number of assumptions that, while considered reasonable by management at the time, are inherently subject to business, market and economic risks, uncertainties and contingencies that may cause actual results, performance or achievements to be materially different from those expressed or implied by forward-looking statements. Such assumptions include, but are not limited to, that planned exploration activities are completed as anticipated; the anticipated costs of planned exploration activities, the price of uranium; that general business and economic conditions will not change in a materially adverse manner; that financing will be available if and when needed and on reasonable terms; and that third party contractors, equipment and supplies and governmental and other approvals required to conduct the Joint Venture's planned activities will be available on reasonable terms and in a timely manner. Although each of IsoEnergy and Purepoint have attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information.
Such statements represent the current views of IsoEnergy and Purepoint with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by IsoEnergy and Purepoint, are inherently subject to significant business, economic, competitive, political and social risks, contingencies and uncertainties. Risks and uncertainties include but are not limited to the following: the inability of the Joint Venture to complete the exploration activities as currently contemplated; ; uncertainty of additional financing; no known mineral resources or reserves; aboriginal title and consultation issues; reliance on key management and other personnel; actual results of technical work programs and technical and economic assessments being different than anticipated; regulatory determinations and delays; stock market conditions generally; demand, supply and pricing for uranium; and general economic and political conditions. Other factors which could materially affect such forward-looking information are described in the risk factors in each of IsoEnergy's and Purepoint's most recent annual management's discussion and analyses or annual information forms and IsoEnergy's and Purepoint's other filings with the Canadian securities regulators which are available, respectively, on each company's profile on SEDAR+ at www.sedarplus.ca. IsoEnergy and Purepoint do not undertake to update any forward-looking information, except in accordance with applicable securities laws.
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SOURCE IsoEnergy Ltd.
FAQ
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