Galileo Mining Ltd. announced the maiden Mineral Resource Estimate (Resource) for the Callisto deposit within the company's 100% owned Norseman project in Western Australia. The Callisto discovery is the first deposit of its type identified in Australia and is analogous in mineralisation style to the Platreef deposits found in South Africa. The Callisto deposit is an undercover discovery found after a review of two drill holes which targeted a geophysical EM conductor.

While the source of the conductor was a sulphidic sediment it was noted that the drill holes had passed through a band of weakly disseminated sulphide mineralisation in the overlying ultramafic intrusive rock. Recognition of the mineralised intervals, the interpretation of increasing metal grades to the east, and understanding the context of the potential mineralisation within the broader regional ultramafic geology provided the drill target which led to the discovery. A regional interpretation of prospective rock units shows that the mafic-ultramafic sill complex which hosts the Callisto deposit is continuous over 20km of strike length.

The potential occurrence of additional mineralization within the host rock complex is now the focus of exploration activity with drill programs and geophysical IP surveys planned to advance the project toward new discoveries. Galileo engaged Cube Consulting (Cube) to complete a maiden Mineral Resource Estimate (MRE) for the Callisto deposit which underpins Galileo's wholly owned Norseman Project located 15 km northwest of the town of Norseman in Western Australia. The data used to produce the MRE was collected by Galileo via drilling throughout 2022 and 2023 following the completion of the discovery hole in May 2022.

Cube did the estimation work between August and September 2023. Highlights: Maiden Indicated and Inferred Mineral Resource Estimate calculated for the Callisto Pd­Pt­Au­Rh­Ni­Cu sulphide deposit; 17.5 Mt @ 1.04g/t 4E1, 0.20% Ni, 0.16% Cu (2.3g/t PdEq2 or 0.52% NiEq3); Contained metal includes 585,000oz 4E, 35kt Ni and 28kt Cu (~1.27Moz PdEq or ~91,000t NiEq); ~8Mt (46%) of the resource is inside the indicated category with a 2.5g/t PdEq grade or 0.58% NiEq (metal content within indicated resource category of ~639,000oz PdEq or ~45,800t NiEq).