Could Greenvale’s Oasis Project Spark a New Uranium District in Queensland?

Expanding Horizons at Oasis

Greenvale Energy Limited (ASX – GRV) has delivered an encouraging update on its Oasis Uranium Project in Queensland, highlighting the potential for significant discovery upside beyond the already identified high-grade deposit. The company’s recent prospectivity study, incorporating both historical data and fresh fieldwork, has identified nine radiometric anomalies that could represent new uranium mineralisation zones within the project’s tenement.

Following Greenvale’s acquisition of the project earlier this year, ground-truthing efforts in mid-2025 involved collecting 33 rock-chip samples across these anomalies. Remarkably, nearly half of these samples returned highly anomalous uranium concentrations, with values reaching as high as 187 parts per million (ppm) in intermediate intrusive rocks and up to 70 ppm in granite. These findings mirror the mineralogical characteristics of the known Oasis deposit, reinforcing the prospectivity of the surrounding region.

Structural Insights and Geological Context

The company’s analysis has revealed two dominant mineralisation trends running north-south and northeast-southwest across the western and central parts of the tenement. These structural orientations correspond closely with the contacts between the Mesoproterozoic-aged Mywyn Granite and older metamorphic rocks, which are believed to control uranium deposition. This dual structural control hypothesis is supported by recent drilling results and could significantly broaden the exploration model for the district.

Greenvale’s CEO, Alex Cheeseman, emphasized the strategic importance of these findings, stating that the interplay of these structural trends could unlock a district-scale uranium project. The presence of coarse-grained biotite-rich granites and diorite dykes, which may have acted as conduits for uranium-rich fluids, further enhances the geological model underpinning the exploration strategy.

Advancing Exploration with Cutting-Edge Data

To refine its understanding of the region’s geology, Greenvale has procured new Sentinel-2 multispectral satellite data, which is expected to augment target generation efforts beyond the immediate Oasis deposit. Complementing this, the company has initiated a close-spaced ground magnetic survey with a fine 10m by 10m grid, designed to deliver high-resolution structural mapping. This survey is critical for delineating the complex shear zones and intrusive contacts that control mineralisation.

Looking ahead, Greenvale plans to undertake trenching and sampling programs to precisely map the shear zones hosting uranium mineralisation. These activities will generate high-quality drill targets, setting the stage for future resource expansion and potentially transforming Oasis into a significant uranium district.

Building on a Strong Foundation

Greenvale’s methodical approach, combining historical datasets with modern geophysical and geochemical techniques, underscores its commitment to unlocking the full potential of the Oasis Uranium Project. While assay results from the recent drilling campaign are still pending, the current findings provide a compelling narrative of regional growth and discovery potential that could materially enhance the company’s resource base.