Minbrie’s Base Metal Potential Strengthened Amid Elevated Nickel and Cobalt Signals

Reassaying Confirms Historical Mineralisation

Lincoln Minerals Limited (ASX: LML) has reinforced the credibility of historical exploration data at its Minbrie Copper-Base Metals Project in South Australia. The company’s recent re-assaying of discovery drill hole BUDD192 has validated the original 2012 assay results, confirming significant copper, lead, zinc, and silver grades. This discovery hole returned an intercept of 12 metres grading 1.4% copper, 12.4% zinc, 2.0% lead, and 13 grams per tonne silver, underscoring the prospect’s high-grade potential.

These results not only confirm the presence of valuable base metals but also support the broader geological model Lincoln Minerals is developing. The company is systematically re-assaying legacy drill core from the northern Minbrie area, targeting previously untested mineralised zones to unlock further value from historical data.

Expanding the Mineralised Footprint

To date, Lincoln has re-logged 1,775 metres of legacy drill core and collected 620 portable XRF readings from 28 historic drill holes. This extensive review has identified 224 mineralised intervals for laboratory assay, highlighting the potential for a district-scale copper-base metal system extending over a 7-kilometre strike length. The use of portable XRF technology has been instrumental in rapidly screening core samples for elemental concentrations, guiding the selection of priority samples for detailed laboratory analysis.

Interestingly, elevated levels of nickel, cobalt, and chromium have also been detected in several drill holes, suggesting the influence of mafic or ultramafic intrusive rocks. While the current focus remains on copper, lead, zinc, and silver, these additional metals could enhance the project's economic potential pending further assay results.

Strategic Location and Next Steps

Minbrie is situated within South Australia’s highly prospective Gawler Craton, a region renowned for hosting world-class copper and base metal deposits. The project benefits from shallow mineralisation depths, existing infrastructure nearby, and a supportive regulatory environment, all factors that enhance its development prospects.

Lincoln Minerals anticipates receiving further assay results in June 2025, which will inform the final selection and ranking of drill targets. The company plans to advance targeted drilling campaigns along strike and down dip of the confirmed mineralised zones, aiming to delineate a robust resource base.

Engaging Investors and Market Outlook

To provide stakeholders with detailed insights into the exploration progress and strategic outlook, Lincoln Minerals will host an investor webinar on 28 May 2025. CEO Jonathon Trewartha and Exploration Geologist Justin Gum will present the latest findings and field questions, offering transparency and engagement as the project advances.

Overall, the re-assay results and ongoing exploration activities at Minbrie position Lincoln Minerals well to capitalise on the growing demand for critical base metals essential to the global energy transition.