Golden Deeps Ltd has intersected strongly mineralised copper-zinc zones below high-grade gossans at its Graceland Prospect in Namibia, revealing promising ‘Tsumeb-type’ sulphide targets. New geophysical surveys have identified multiple chargeability anomalies, setting the stage for deeper drilling campaigns.
- Diamond drilling beneath Gossan 1 reveals wide zones of copper, zinc, lead sulphides
- Induced Polarisation and Resistivity surveys highlight multiple down-plunge sulphide targets
- Mineralised corridor extended to over 3km strike by soil and rockchip sampling
- Ongoing shallow drilling tests entire mineralisation thickness at Gossan 1 East
- 3D geophysical modelling underway to prioritise ‘Tsumeb-type’ critical metals targets
Exploration Success at Graceland
Golden Deeps Ltd (ASX – GED) has reported significant progress at its Graceland Critical Metals Prospect, located in Namibia’s prolific Otavi Mountain Land metallogenic belt. The company’s recent diamond drilling beneath the high-grade Gossan 1 outcrop has intersected intensely mineralised zones rich in copper, zinc, lead, silver, and germanium. These results build on previous spectacular surface sampling that hinted at a robust mineral system analogous to the world-class Tsumeb mine just 20km north.
The two new diamond drillholes, GLBPD003 and GLBPD004, tested beneath the Gossan 1 channel samples and revealed a continuous mineralised zone approximately 7 metres thick. Visual logging identified zones with up to 15% malachite (copper carbonate), significant zinc sulphide (sphalerite), and lead sulphide (galena) stringers and lenses. While laboratory assays are pending, these visual estimates suggest a substantial sulphide system extending below the surface gossans.
Geophysical Surveys Highlight New Targets
Complementing the drilling, Golden Deeps completed an extensive Induced Polarisation (IP) and Resistivity survey over a 2-kilometre section of the Graceland mineralised corridor. The survey identified multiple chargeability anomalies extending east and down-plunge from the known gossan outcrops. Notably, a large, blind IP-Resistivity anomaly was detected at least 200 metres below surface, unassociated with any surface gossan, suggesting undiscovered sulphide mineralisation at depth.
These geophysical anomalies are being modelled in 3D to integrate with geological and geochemical data, aiming to refine and prioritise ‘Tsumeb-type’ sulphide drilling targets. The company’s CEO, Jon Dugdale, emphasised the importance of these findings, noting the potential for a significant sulphide system analogous to the famed Tsumeb deposit, which historically produced exceptional grades of copper, lead, zinc, silver, and germanium.
Expanding the Mineralised Corridor
Further soil and rockchip sampling extended the mineralised corridor at Graceland by an additional 500 metres to the west, now exceeding 3 kilometres in strike length. Assays from recent rockchip samples returned copper grades up to 2.32% and silver up to 223 grams per tonne, reinforcing the prospect’s scale and continuity.
Meanwhile, shallow diamond drilling continues at Gossan 1 East, where previous channel sampling intersected high-grade mineralisation including up to 20.1% copper and 1,205 grams per tonne antimony over 1 metre. Drilling will also test other high-grade zones such as Gossan 1 West and Gossan 2 North, which have returned rockchip assays as high as 50.6% copper and 3,179 grams per tonne silver respectively.
Next Steps and Market Implications
Golden Deeps is preparing for a more extensive and deeper drilling program to test the newly defined sulphide targets, with suitable contractors identified for the challenging terrain. The integration of 3D geophysical models with geological and geochemical data will guide this next phase, potentially unlocking a significant critical metals resource in a globally strategic location.
While assay results from recent drilling are awaited, the combination of surface sampling, drilling, and geophysical data paints an encouraging picture for the Graceland Prospect. Investors will be watching closely as Golden Deeps advances its exploration, with the potential to add substantial value through discovery of ‘Tsumeb-type’ critical metals mineralisation.
Bottom Line?
Golden Deeps’ Graceland discovery is shaping up as a compelling critical metals target, with deeper drilling poised to unlock its full potential.
Questions in the middle?
- What will the pending assay results reveal about the grade and continuity of the sulphide zones?
- How will the 3D geophysical models refine the prioritisation of drilling targets?
- What are the timelines and capital requirements for the planned deeper drilling program?