- 0113 uranium anomalies at Thunderball; 4 on Hayes Creek Fault.
- 02Spectre link; palaeochannel ~4 km long.
- 03AMR: 4,313-line km at 100 m spacing.
Greenvale Energy (ASX: GRV) has identified 13 clustered uranium anomalies following a high-resolution airborne magnetics-radiometrics (AMR) survey across its Thunderball project in the Northern Territory.
Four of the anomalies are located along the highly prospective Hayes Creek Fault Zone, while one is believed to correlate with the historical Spectre prospect first recognised in 2009, providing further confidence in the project ahead of imminent field exploration.
A potential palaeochannel feature has also been identified from a strong radiometric anomaly estimated to be 4 kilometres long and up to 900 metres wide.
Additional anomalies coinciding with mapped positions of the Cullen Supersuite Granites have been further assessed as potential source rocks for uranium deposits in the region.
Greenvale has launched a geological mapping and sampling program focused on the high-priority anomalies identified at Hayes Creek and progressing to the palaeochannel target at the western boundary.
High-Resolution Data
Greenvale’s AMR survey covered 4,313-line kilometres flown at a 100-metre line spacing and a nominal height of 50m, providing high-resolution magnetic and radiometric data across the tenement.
The east-west orientation used for the survey lines was considered optimal for mapping geological features of variable strike direction.
This methodology was validated by the identification of the new anomalies, which correlate with Hayes Creek to the west and the contact of the Pine Creek Orogen and Birrindudu/Daly Basins on the east.
Gas anomalies identified from previous Sentinel-2 multi-spectral data also correlated with the anomalies, further strengthening their prospectivity and confirming Sentinel-2 as a valuable regional exploration tool.
On-Ground Exploration Next
Managing director Alex Cheeseman said the uranium anomalies would clear the way for focused on-ground exploration including mapping and sampling surveys.
“The results significantly increase our confidence in the potential of the Thunderball project and the importance of the Hayes Creek Fault as a key controlling structure for the discovery of uranium deposits in the district,” he said.
The company believes the survey provides validation of its decision to acquire the Pine Creek uranium project in June and significantly enhances the value of the tenure.
“The emergence of potential sandstone-hosted uranium along with unconformity-style deposits also makes this ground particularly unique […] at a time when national policy and support for uranium exports is growing and the market fundamentals for uranium continue to strengthen.”
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