- WA1 Resources (WA1) flags a potential new gravity target from infill survey work at the Luni discovery within its West Arunta project in Western Australia
- Results from the survey completed in December 2022 more broadly defined the lateral extent of the approximate three-kilometre by one-kilometre intrusion
- The first phase of WA1’s 2023 exploration drilling program aims to focus on the Luni discovery using a regular grid spacing
- The company says the new gravity data also instils confidence that the survey interpretation has mapped out the bedrock topography
- WA1 Resources shares are up 2.53 per cent, trading at $1.42 at 1:25 pm AEDT
WA1 Resources (WA1) has flagged a potential new gravity target from infill survey work at the Luni discovery within its West Arunta project in Western Australia
The gravity survey was completed at Luni in December 2022, increasing the gravity station coverage to 100 metres by 50 metres, from the previous 400 metres by 400 metres.
WA1 said it believed the Luni gravity anomaly highs more broadly defined the lateral extent of the approximately three-kilometre by one-kilometre carbonatite intrusive system.
“This infill gravity survey has significantly improved the resolution of the dataset over the Luni carbonatite and will be coupled with infill magnetics, which is currently being acquired, to further enhance our targeting efforts,” WA1 Managing Director Paul Savich said.
“When combined with the recent passive seismic survey, these gravity results increase our confidence that the passive seismic has mapped the horizon, which has had a general association with high-grade, enriched mineralisation seen in drilling.”
He said using the seismic data, it was possible to remove some of the effects of the basement topography, providing a clearer view of the features before.
“For the first time, we believe we have possibly defined the densest part of the Luni gravity anomaly, providing a refined gravity target at depth.”
The highest gravity amplitude was located in the east, coincident with a shallowing of the bedrock as interpreted by the passive seismic survey.
The company said the correlation between the bedrock topography and the broad gravity high zone at Luni highlighted the relationship between the two datasets.
WA1 has published an updated 3D inversion model for the Luni area using the passive seismic data. The model highlights another target that aims to be tested with deeper drilling in the company’s upcoming drill program.
Additionally, a heritage survey at the West Arunta Project was completed last week.
WA1’s first phase of its 2023 exploration drilling program will focus on drilling the Luni discovery using regular grid spacing.
Drill samples and drill core will also be collected for preliminary metallurgical test work. The company is planning follow-up drill testing of the P2 carbonatite along with initial drill testing of some regional targets.
WA1 Resources shares were up 2.53 per cent and trading at $1.42 at 1:25 pm AEDT.