Greenvale Expands Thunderball Pipeline With Six New Uranium Targets
Greenvale Energy has identified six additional uranium targets at its Thunderball Project in the Northern Territory, tied to a newly interpreted fault structure and coincident geophysical anomalies. Early laboratory results also support uranium anomalism at Wildcard South and along a possible Hayes Creek Fault splay, although drilling has yet to begin.
- Six new targets identified within EL33670
- Radiometric readings reached 17ppm eU against a 4ppm background
- Laboratory assays returned up to 51ppm U at Wildcard South
- Uranium-bearing breccia returned assays up to 21ppm U
- Fieldwork, permitting and drill-target preparation continue
Six Targets Added to Thunderball Pipeline
Greenvale Energy Limited (ASX:GRV) has expanded the list of drill candidates at its Thunderball Uranium Project, identifying six new target areas within EL33670. The DR15, DR16, DR17, DR21, DR23 and DR24 targets sit along a newly interpreted north-west to south-east fault structure marked by coincident magnetic, gravity and radiometric anomalies.
The targets have been ground-truthed using RS-125 spectrometer readings, portable XRF measurements and airborne radiometric data. Field readings reached 17ppm equivalent uranium against a reported natural background of about 4ppm eU. Samples have been collected for laboratory analysis, with further field investigations still under way.
Fault Structure Creates New Exploration Focus
Independent geophysical reviewer Arrow Geoscience identified the structure in the central portion of EL33670. It broadly follows the geological contact between the Pine Creek Orogen and the overlying Daly and Birrindudu basins, and Greenvale interprets it as a possible graben that could have provided space for uranium-bearing fluids to enter younger basin sediments.
That interpretation remains geological targeting rather than evidence of a mineral resource. The significance for Greenvale is that the structure adds another possible mineralisation corridor to a project already being assessed through ground mapping, sampling and prospectivity work. The company is also progressing permitting for a range of prospects to retain flexibility over initial drill testing.
Laboratory Results Support Surface Anomalism
The release includes an early batch of chemical assays from the broader field program. Wildcard South produced a peak uranium assay of 51ppm U, while results at the Powers Prospect were described as anomalous against a background of about 3ppm U. Greenvale said the laboratory results correlated with field readings from the RS-125 and pXRF instruments.
The company has also confirmed uranium mineralisation in breccia outcrops near the Spectre Prospect. The first outcrop returned up to 21ppm U by chemical assay, correlating with earlier field readings, while a second outcrop to the north-north-east produced elevated handheld readings. Further samples from the breccia corridor are awaiting assay.
Drilling Still Depends on Follow-Up Work
The numbers are encouraging for target generation, but they are not drilling results and do not establish grade, thickness or continuity. Greenvale explicitly cautioned that RS-125 and pXRF readings are qualitative spot measurements affected by sample conditions, surface effects and instrument limitations. Laboratory assays are required to confirm the scale and consistency of the anomalism.
Field teams are continuing to assess the remaining radiometric anomalies before the Northern Territory wet season, while additional work is planned at the Elkedra-Henbury Project. The next meaningful test for Thunderball will be whether pending assays convert the mapped anomalies and breccia corridor into sufficiently coherent targets for a maiden drill campaign.
Bottom Line?
Greenvale has added useful targets and some laboratory support, but the investment case still turns on pending assays and whether surface anomalies survive drill testing.
Questions in the middle?
- Will assays from the six new EL33670 targets confirm repeatable uranium anomalism?
- Does the breccia corridor continue along the interpreted Hayes Creek Fault splay?
- When will permitting and target refinement allow initial drilling to begin?
