Galileo Mining has identified a previously unrecognised mineralised ultramafic sill beneath its Callisto Resource, boosting the prospectivity of its Norseman PGM project and kicking off a 5,000-metre aircore drilling program targeting multiple high-priority sulphide zones.
- Discovery of new mineralised ultramafic sill beneath Callisto
- Diamond drilling intercepts 109m at 0.21g/t PGM 3E
- 5,000m aircore drilling underway at Mission Sill and Callisto South
- Strong cash position of approximately A$7.5 million
- Fraser Range JV tenement relinquished due to lack of prospectivity
New Mineralised Sill Boosts Norseman Exploration Upside
Galileo Mining (ASX:GAL) has significantly expanded the geological understanding of its Norseman Platinum Group Metal (PGM) Project with the discovery of a previously unrecognised mineralised ultramafic sill beneath the existing Callisto Resource. Diamond drilling hole 26NRDD525 intersected a broad zone of 109 metres grading 0.21g/t PGM 3E from 426 metres, including a higher-grade 8 metres at 0.50g/t PGM 3E, underscoring the potential for stacked intrusive systems across the project.
Metallurgical sampling within the same drill hole confirmed consistent, high-grade mineralisation closer to surface, returning 38 metres at 1.57g/t PGM 3E with notable copper and nickel credits. These results reinforce the Callisto deposit’s unique Platreef-style mineralisation, analogous to South Africa’s renowned deposits, and suggest a more complex layered intrusive system than previously appreciated.
Geophysical Surveys Refine Targets at Mission Sill
Complementary gravity and induced polarisation (IP) surveys at the Mission Sill prospect have delineated strong geophysical anomalies coinciding with recent sulphide mineralisation. The surveys reveal a pronounced gravity response along the contact zone between mafic and ultramafic units, a prime target for economic sulphide mineralisation. Chargeability anomalies detected by IP further highlight zones warranting follow-up drilling to assess mineralisation depth and continuity.
5,000 Metre Aircore Drilling Program Commences
Building on these encouraging geological and geophysical insights, Galileo commenced a 5,000-metre aircore drilling campaign targeting high-priority sulphide zones at Mission Sill and the newly defined Callisto South prospect. This program aims to test shallow mineralisation identified in prior drilling and explore extensions of mineralised intrusive systems beyond the current resource boundaries. The company anticipates assay results from this campaign in the September quarter, which will inform subsequent exploration strategies.
Strong Balance Sheet Supports Exploration Momentum
Galileo ended the June quarter with a robust cash position of approximately A$7.5 million, ensuring the company is well funded to advance its exploration agenda with capital discipline. This financial strength underpins ongoing metallurgical test work on Callisto drill core and supports the evaluation of priority targets generated from recent drilling and geophysical data.
Fraser Range Joint Venture Update
While Norseman remains the exploration focus, Galileo is reviewing data from its Fraser Range joint venture with the Creasy Group. During the quarter, the company relinquished tenement E28/2949 due to a lack of prospectivity, reflecting a strategic refinement of its project portfolio. The JV continues to hold promising ground near established nickel-copper deposits, with future work programs under consideration.
Bottom Line?
Galileo’s discovery of a new mineralised sill and expansive drilling program at Norseman could redefine the project’s scale, but assay results from ongoing aircore drilling will be pivotal for confirming resource growth.
Questions in the middle?
- Will assay results from the current aircore drilling confirm extensions to the Callisto and Mission Sill mineralisation?
- How will metallurgical test work influence the economic viability and processing strategy for the Norseman PGM deposit?
- What exploration priorities will Galileo set for its Fraser Range JV after relinquishing one tenement?