Infini Resources Expands Portland Creek Drilling to 5,000 Meters on Hydrothermal Uranium Model

Expanded Drilling Program Targets Large Hydrothermal Uranium System

Infini Resources Ltd (ASX:I88) is significantly increasing its exploration commitment at the Portland Creek Uranium Project in western Newfoundland, Canada, with a planned 5,000-meter diamond drilling program supported by 1,000 meters of trenching. This scale-up follows a suite of 2026 airborne magnetic, electromagnetic, and radiometric surveys, alongside detailed field mapping and prospecting, which have refined the company’s understanding of a district-scale, structurally controlled hydrothermal uranium system.

The company’s CEO, Rohan Bone, highlighted that three-dimensional inversion modelling of the magnetic data has, for the first time, resolved the geometry of an extensive magnetic destruction footprint aligned with the project’s structural network. This footprint is interpreted as a signature of hydrothermal fluid movement, marking zones where host granite has been altered and magnetite destroyed, creating prime targets for uranium mineralisation.

Structural Intersections Drive Targeting Strategy

Infini’s exploration model focuses on the confluence of multiple datasets: intersections of two principal structural families (east-west and north-northwest to north-northeast striking faults), boundaries between preserved magnetic highs and magnetic destruction zones, and uranium anomalism identified through rock sampling and radiometric surveys. Phase 2 drilling has already confirmed fracture-controlled uranium mineralisation, including uraninite associated with chlorite-hematite alteration, reinforcing the model.

Trenching has commenced to expose bedrock and collect structural orientation data, which will refine drill targeting ahead of the diamond drilling campaign scheduled to begin in Q3 2026. The trenching program represents the first systematic excavation on the project and aims to validate priority targets defined by the integrated geophysical and geochemical datasets.

Geophysical Surveys Transform Targeting Framework

The 2026 airborne surveys have been pivotal in transforming a series of isolated surface uranium occurrences into a coherent, district-scale target set with defined three-dimensional geometry at depth. The magnetic inversion modelling delineates linear zones of low magnetic intensity interpreted as faults with magnetic destruction, flanking magnetic highs. These diffuse boundaries are seen as the most prospective zones for hydrothermal uranium deposition.

Concurrently, the radiometric survey refined the surface distribution of uranium anomalies, which align closely with the structural corridors defined by the magnetic data. This integrated approach has allowed Infini to prioritise drill targets where structural dilation, magnetic destruction, and uranium anomalism coincide, setting the stage for the most substantial exploration phase at Portland Creek to date.

Project Context and Next Steps

Portland Creek covers 329 km² within the Precambrian Long Range Complex, an area with historic uranium anomalies dating back to the 1970s. Infini has verified and expanded these anomalies, including a high-grade soil anomaly peaking at 74,997 ppm U₃O₈ at the Falls Lake Prospect. The company considers the region materially underexplored for uranium and believes the current program could unlock significant new resources.

With geological services provider CMG and drilling contractor Rodren mobilising, the expanded program is set to deliver critical structural data and test key targets across a large hydrothermal system. Assay results from the ongoing trenching and upcoming drilling will be closely watched for confirmation of the system’s scale and economic potential.