Galileo Mining advanced several PGM, nickel, copper and gold targets at Norseman during FY2026, but a A$4.55 million exploration impairment pushed its annual loss to A$4.67 million. The company ended the year with A$7.48 million in cash and a growing drilling pipeline for Mission Sill and Callisto South.
- A$4.67 million FY2026 net loss after A$4.55 million exploration impairment
- A$7.48 million cash balance and A$1 million MinRes progress payment
- Mission Sill PGE anomalism defined across roughly 10 kilometres
- New mineralised ultramafic sill identified beneath 17.5Mt Callisto Resource
- Two Mission Sill PGM zones and a Callisto South gold prospect emerged after year-end
Exploration progress comes with a heavier accounting loss
Galileo Mining’s FY2026 was a year of expanding geological possibilities and shrinking financial headroom. The ASX-listed explorer reported a net loss of A$4.67 million, up from A$1.16 million a year earlier, after impairing A$4.55 million in capitalised exploration and tenement acquisition costs linked to surrendered ground.
The impairment is largely an accounting consequence of relinquished tenements rather than a reported deterioration at the company’s main Norseman targets. Galileo spent A$2.79 million on exploration and tenement costs during the year, while cash fell from A$9.74 million to A$7.48 million. A A$1 million payment from Mineral Resources (ASX:MIN) under the Norseman lithium farm-in helped offset part of that drawdown.
Mission Sill develops into Galileo’s main discovery bet
The strongest exploration narrative sits at Mission Sill, where 4,300 metres of aircore drilling across 149 holes identified PGE anomalism along about 10 kilometres of the Eastern Contact Zone. Follow-up sampling produced a headline 1-metre intersection of 17.06 grams per tonne 3E, comprising 13.74 grams per tonne gold, 3.21 grams per tonne palladium and 0.10 grams per tonne platinum.
RC drilling moved the prospect beyond surface geochemistry, confirming disseminated PGE-nickel-copper sulphide mineralisation in fresh rock. Results included 40 metres at 0.92 grams per tonne 3E from surface and 44 metres at 0.78 grams per tonne 3E from 4 metres. Galileo says the sulphide distribution resembles that at Callisto, although the Mission Sill results remain exploration intersections rather than a resource or economic study.
Post-year-end drilling narrows the next targets
Results received after 30 June divided Mission Sill’s prospective area into two PGM target zones: Zone A, extending for about 1.4 kilometres of strike, and Zone B, extending for about 2 kilometres. Aircore results included 36 metres at 0.31 grams per tonne 3E, 20 metres at 0.30 grams per tonne and 16 metres at 0.33 grams per tonne.
Those results sit behind the company’s planned next step: RC drilling to test the size and grade of sulphide zones within both areas. The company had also identified the Callisto South prospect, where first-pass aircore drilling returned 4 metres at 1.22 grams per tonne gold from surface within an interpreted shear zone. The gold result opens a different exploration angle from Galileo’s PGM-focused work, but its extent and significance are yet to be established.
Callisto drilling points to a larger intrusive complex
Deep diamond drilling beneath the 17.5 million tonne Callisto Mineral Resource intersected a previously unrecognised mineralised ultramafic sill. Hole 26NRDD525 returned 109 metres at 0.21 grams per tonne 3E from 426 metres, including 8 metres at 0.50 grams per tonne, after passing through Callisto mineralisation that assayed 38 metres at 1.57 grams per tonne 3E, 0.24% copper and 0.27% nickel.
Galileo’s interpretation is that Callisto and Mission Sill form parts of multiple intrusive sill complexes along major structural corridors. That interpretation increases the number of targets, but it also increases the amount of drilling required before the broader system can be assessed in resource terms. Metallurgical testwork on fresh Callisto core is continuing, building on earlier flotation results.
Cash supports the programme but does not remove funding risk
Galileo finished FY2026 with no debt funding and A$43.10 million in net assets, alongside 197.62 million ordinary shares on issue. The MinRes lithium arrangement remains a source of potential non-dilutive support: the parties suspended the full earn-in after the A$1 million payment, with a further A$1.5 million restart payment due by November 2027 if the earn-in is resumed.
That balance gives Galileo room to continue exploration, but the company’s own report identifies future equity funding and joint ventures as possible sources of capital. The immediate test is whether Mission Sill’s follow-up RC drilling converts broad and sometimes shallow anomalies into coherent sulphide zones, while Callisto’s metallurgy determines how much weight can reasonably be placed on the existing resource.
Bottom Line?
Galileo has more targets than it did a year ago, but the next round of RC drilling and Callisto metallurgical results must turn geological promise into evidence of scale, continuity and recoverability before the cash balance becomes the dominant story.
Questions in the middle?
- Will follow-up RC drilling at Mission Sill establish sulphide zones with sufficient scale and grade to support resource work?
- Can the newly identified ultramafic sill beneath Callisto add meaningful mineralisation beyond the existing 17.5Mt resource?
- How long can Galileo fund an active Norseman exploration programme before further equity or joint-venture funding is required?