Solis Minerals Limited has completed three diamond drill holes to depths of approximately 200 metres at the Mandacaru Lithium Project within the Araçuaí Lithium Valley in Minas Gerais, Brazil, while executing a drilling contract for the Cinto Copper Project in Peru.

The initial drilling program at Mandacaru was previously outlined as 10 holes totaling 2,000 metres. Solis has now progressed to the fourth hole, PDH-08, marking the start of a second geological fence approximately 300 metres northwest of the first. The ongoing campaign tests the grade, geometry, and continuity of the lithium-caesium-tantalum pegmatite corridor.

Drilling to date has intersected pegmatites below surface from approximately 30 to 40 metres depth, broadly aligning with the company's geological interpretation and surface mapping. Detailed logging of completed holes is well advanced, and sample preparation is underway ahead of assay submissions to an accredited laboratory in Belo Horizonte.

“We are pleased with the progress of drilling at Mandacaru. Completing three diamond holes to planned depth, and now progressing our fourth hole at PDH-08.”

“Encouragingly, pegmatites mapped at surface have been intersected below surface, providing early support for our geological model. With logging and sample preparation progressing efficiently, we look forward to receiving laboratory assay results and updating shareholders as the program advances.”

— Mitch Thomas, Chief Executive Officer

In Peru, Solis has executed a drilling contract for the Cinto Copper Project, with diamond drilling scheduled to begin in August 2026. The initial program is planned to comprise approximately five drill holes totaling 2,500 metres to test high-priority copper porphyry targets defined through geochemical and induced polarisation surveys.

The company funded the dual-country exploration push following an A$6 million placement completed in May 2026.

Read the full announcement: Drilling Update at Mandacaru & Commencement at Cinto