Infini Completes Airborne Survey and Confirms Uranium at Portland Creek

First Modern Airborne Geophysics Unveils Structural Complexity

Infini Resources Ltd (ASX:I88) has completed the first modern helicopter-supported airborne electromagnetic (EM) and magnetic survey over its Portland Creek Uranium Project in Newfoundland, Canada, covering 2,230 line kilometres across 252 square kilometres. This high-resolution survey marks a significant leap beyond legacy fixed-wing data from the 1980s, delivering unprecedented detail on the granite-hosted system's structural fabric and hydrothermal alteration zones.

The new magnetic dataset, acquired simultaneously with the EM survey, is expected to be the primary tool for advancing geological understanding. It will enable precise mapping of fault sets, their intersections, and demagnetised zones indicative of uranium mineralisation-related alteration. Notably, the survey employed the Xcite™ helicopter EM system, which provides superior spatial resolution and ground penetration compared to previous airborne surveys.

Interpretation of the EM data is ongoing, but early results show a resistive sub-glacial bedrock consistent with a large granitic intrusion and no discrete conductors detected to date. The integration of these geophysical results with structural and geochemical data from drilling will directly inform the upcoming Phase 3 drill program.

Final Phase 2 Drilling Assays Confirm Extensive Uranium Mineralisation

Infini has received the final laboratory assay results from its 17-hole Phase 2 diamond drilling campaign, totaling 5,310 metres. The data confirm uranium mineralisation spanning more than 6 kilometres of strike length at Portland Creek, hosted within structurally controlled fracture networks in granite.

Highlights include hole PCDD25-019 at Target 5, which returned 107 ppm U₃O₈ over 0.62 metres with continuous uranium anomalism over 310 metres downhole; the most extensive intersection in the program. Similarly, PCDD25-022 at Target 7 showed multiple intervals above 100 ppm U₃O₈, including 192 ppm over 0.5 metres, confirming significant vertical extent.

The comprehensive dataset, supported by over 2,800 structural measurements and multi-element geochemistry, has refined the geological model. Portland Creek is interpreted as a structurally controlled, multi-stage hydrothermal uranium system, with uranium enrichment preferentially developed at intersections of NW-SE and E-W to WNW-ESE fracture sets. This structural insight will prioritise targets for Phase 3 drilling.

Strategic Phase 3 Drilling and Follow-Up Fieldwork Planned

Building on the integrated geological, geochemical, and geophysical framework, Infini plans an expanded Phase 3 diamond drilling campaign of approximately 5,000 metres commencing in Q3 2026. This program will focus on high-priority structural corridors identified from the combined dataset, particularly the dominant NW-SE fluid pathway and zones where multiple fracture orientations intersect.

Prior to drilling, a follow-on airborne radiometric survey is scheduled for Q2 2026 to complete the geophysical dataset, along with field-based prospecting and detailed structural mapping. These activities aim to refine drill collar locations and further delineate hydrothermal alteration zones associated with uranium mineralisation.

The company’s CEO, Rohan Bone, emphasised the significance of the airborne survey and integrated data in unlocking new targets across what remains a substantially underexplored structural system. This approach positions Infini for a focused, high-impact Phase 3 program targeting a district-scale uranium system within Newfoundland’s Precambrian Long-Range Complex.

Portland Creek’s Geological Setting and Historical Context

Portland Creek lies within the Humber Tectonic-Stratigraphic Zone, a geological setting favourable for structurally hosted, hydrothermal uranium deposits. The project covers a 6 km uranium anomaly zone first identified in the 1970s, with recent soil sampling revealing high-grade uranium values up to 74,997 ppm U₃O₈ at the Falls Lake prospect.

Infini’s ongoing exploration has verified these historical anomalies and expanded the tenement package, with the current airborne geophysics survey providing a step-change in understanding the granite host and associated mineralisation controls. The company’s integrated approach echoes its broader Canadian uranium strategy, which includes maiden drilling at the Athabasca Basin margin projects, reflecting a multi-pronged exploration campaign maiden drilling at Saskatchewan uranium and Canadian uranium projects at Ignite.