Lodestar Minerals Limited has received final assay results for the second diamond drill hole completed at the Three Saints project in the Coastal Cordillera of Chile’s Atacama region, returning 14.82 metres grading 0.10% copper equivalent from 404.40 metres, including a 1-metre interval at 0.43% copper equivalent from 407.0 metres.

Diamond drill hole L3SDD004 was drilled to a final depth of 611.10 metres, positioned approximately one kilometre northeast of the project's maiden drill hole, L3SRD003. The latest assays confirm a positive correlation between iron content and sulphide presence, aligning with a hydrothermal mineral assemblage typical of iron oxide copper-gold systems. The interval included pyrite and chalcopyrite mineralisation spatially associated with magnetite veins and breccias, as well as biotite-actinolite and sodic-calcic alteration within the host tonalite intrusive.

Assay results also yielded anomalous high values reaching up to 1,314 parts per million copper and 404 parts per million cobalt within a hydrothermal breccia intercepted between 568 metres and 570.26 metres. Lodestar previously completed maiden diamond drill hole L3SRD003 to a final depth of 600 metres at the project, confirming the initial mineralising system.

“The Three Saints drilling program has delivered an encouraging geological outcome, identifying a previously untested, concealed IOCG-style hydrothermal system. The first two drill holes confirmed copper-gold mineralisation and a strong alteration assemblage consistent with an IOCG system.”

“Importantly, the second hole intersected skarn alteration accompanied by cobalt mineralisation, providing an important geological vector towards potentially more favourable host rocks. This is an exciting development, and we now have a clearer understanding of the system and the geological controls that will help guide the next phase of exploration at Three Saints.”
— Coraline Blaud, CEO & Executive Director

Beyond Three Saints, the company’s Chilean portfolio includes the Los Loros copper-molybdenum-gold project, where five new copper and gold targets were identified at the Águila prospect in May 2026. Drilling operations at Los Loros have been temporarily postponed due to El Niño weather conditions. Lodestar Minerals will resume drilling at the Los Loros project once road access is restored. Meanwhile, regional activity in the Atacama district includes recent high-grade copper assays reported at Buen Retiro by Fitzroy Minerals Inc.

Read the full announcement: Drilling Results Strengthen IOCG Model at Three Saints