Mission Sill Drilling Yields Peak 3.3 g/t Palladium Assay in New Aircore Results

Mission Sill Assays Validate PGE Potential

Galileo Mining Ltd (ASX: GAL) has announced compelling new assay results from its 2024 aircore drilling program at the Mission Sill prospect within its Norseman project in Western Australia. The latest one-metre sample assays confirm significant palladium and platinum mineralization, with a standout peak palladium grade of 3.3 grams per tonne (g/t) recorded from 28 metres depth in drill hole NAC501. These results reinforce earlier findings of widespread platinum group elements (PGEs) mineralization and provide greater confidence for targeted follow-up drilling.

The Mission Sill prospect is geologically significant, situated approximately 8 kilometres from Galileo’s flagship Callisto deposit, which hosts a 17.5 million tonne resource. Both prospects share the same ultramafic host rocks, known to be conducive to PGE mineralization, suggesting a strong regional potential for resource expansion.

Widespread Mineralized Zones and Rhodium Discovery

Among the highlights are broad intercepts such as 11 metres at 0.71 g/t 3E (combined Pd, Pt, Au) from 20 metres in NAC470, and 18 metres at 0.48 g/t 3E from surface in NAC471. The assays also confirmed the presence of rhodium, a precious metal closely associated with palladium and platinum, with maximum average rhodium assays reaching 41 parts per billion (ppb). Rhodium’s detection is particularly noteworthy as it may serve as a geochemical vector pointing towards basement mineralization, aiding future exploration targeting.

Upcoming Drilling to Expand and Infill Targets

Building on these encouraging results, Galileo has scheduled a follow-up aircore drilling program to commence imminently. This campaign will focus on infill drilling between two anomalous lines approximately 600 metres apart, as well as testing new targets along the 12-kilometre prospective strike length of the Mission Sill trend. The company aims to refine drill targeting and better delineate mineralized zones ahead of more advanced resource evaluation.

Galileo’s Managing Director, Brad Underwood, emphasized the significance of the assays, noting that the higher quality one-metre sampling techniques have provided additional confidence in the prospect’s potential. He also highlighted the company’s commitment to an active exploration agenda, with multiple drill campaigns planned throughout 2025 to unlock value from its extensive tenement holdings.

Strategic Positioning Near Callisto Deposit

The Mission Sill’s proximity to the Callisto deposit, which was discovered in 2022 and is the first of its kind in Australia analogous to South Africa’s Platreef deposits, adds strategic importance to these exploration efforts. Callisto’s maiden mineral resource estimate reported 17.5 million tonnes at 1.04 g/t 4E (Pd, Pt, Au, Rh) and notable nickel and copper grades, underscoring the region’s multi-metal potential. Metallurgical test work suggests amenability to conventional processing methods, bolstering the economic prospects of the resource.

Galileo’s broader Norseman project tenure covers 255 square kilometres and includes other promising prospects such as Jimberlana. The company also holds joint ventures in the Fraser Range targeting nickel-copper sulphide deposits, further diversifying its exploration portfolio.

Outlook and Market Implications

With the Mission Sill assays confirming significant PGE mineralization and rhodium presence, Galileo is well positioned to advance its exploration momentum. The upcoming drilling campaign will be closely watched by investors and analysts eager to see if these early results translate into a meaningful resource expansion. Given the rising global demand for PGEs, particularly in automotive and industrial applications, Galileo’s progress at Norseman could attract increased market interest and potentially enhance shareholder value.