Galileo Mining has initiated a large-scale gravity survey at its Norseman project in Western Australia, aiming to deepen geological insights ahead of a targeted drilling campaign. The survey covers key prospective zones near the significant Callisto deposit and Mission Sill prospect.
- Ground gravity survey commenced over 250 km² at Norseman project
- Survey targets geological structures controlling palladium-gold-platinum mineralisation
- Fieldwork expected to complete in November; results due December/January
- Follow-up RC drilling scheduled for late November targeting high-grade gold-palladium zones
- Callisto deposit hosts 17.5 Mt sulphide resource with multiple valuable metals
Exploration Momentum Builds at Norseman
Galileo Mining Ltd (ASX:GAL) has taken a significant step forward in its exploration program by commencing a detailed ground gravity survey across its 100% owned Norseman project in Western Australia. This large-scale geophysical effort aims to enhance understanding of the geological structures that control the distribution of palladium, gold, and platinum mineralisation within the region.
The survey spans over 250 square kilometres, focusing on two key prospective zones, a 20-kilometre strike around the established Callisto deposit and a 12-kilometre strike at the Mission Sill prospect. The Callisto deposit, discovered in 2022, is a notable sulphide resource containing palladium, platinum, gold, nickel, and copper, with an initial resource estimate of 17.5 million tonnes. This discovery has already positioned Norseman as a promising new mineral province.
Survey Design and Objectives
The gravity survey involves approximately 3,000 stations spaced 400 by 100 metres, designed to map the mafic-ultramafic sill complexes that host the mineralisation. Sulphide mineralisation at Callisto is associated with the basal unit of an ultramafic sill, and the survey seeks to delineate controlling cross-structures that may localise high-grade mineralisation. Understanding these structures is critical to identifying new targets and refining the geological model ahead of drilling.
Fieldwork is scheduled to conclude by the end of November, with data interpretation and results expected in December or January. These insights will guide the upcoming reverse circulation (RC) drilling program planned for late November, which aims to test multiple high-grade gold-palladium targets identified from recent aircore drilling at the Mission Sill prospect.
Drilling to Follow Up High-Grade Results
The forthcoming RC drilling will focus on the eastern contact zone of the Mission Sill, where recent assays have revealed encouraging grades, including a standout 7 metres at 3.87 grams per tonne combined palladium, platinum, and gold (3E), with a peak gold assay of 13.74 grams per tonne. These results suggest the presence of economically significant mineralisation near the mafic-ultramafic rock boundary, a geological setting known globally for hosting platinum group element (PGE) deposits.
Galileo’s Managing Director, Brad Underwood, emphasised the potential of the Norseman project, highlighting the company’s commitment to unlocking further discoveries through integrated geophysical and geological data collection. The combination of gravity survey data and targeted drilling is expected to sharpen the understanding of mineralisation controls and potentially expand the resource base.
Strategic Positioning in a New Mineral Province
The Norseman project’s geological setting is analogous to the renowned Platreef deposits of South Africa, underscoring its significance as a new mineral province in Australia. Galileo’s tenure covers 255 square kilometres, including the Callisto deposit and adjacent prospects such as Jimberlana and Mission Sill, all prospective for a suite of metals including palladium, platinum, nickel, copper, cobalt, and rhodium.
With the gravity survey underway and drilling imminent, Galileo is poised to advance its exploration narrative, potentially delivering new high-grade discoveries that could enhance the project’s value and contribute to the broader supply of critical metals.
Bottom Line?
As Galileo Mining’s gravity survey progresses and drilling looms, the Norseman project stands at the cusp of potentially transformative discoveries.
Questions in the middle?
- Will the gravity survey reveal new structural targets beyond the current known deposits?
- How will the upcoming drilling results impact the existing resource estimates at Norseman?
- What are the metallurgical characteristics of the Mission Sill mineralisation compared to Callisto?